1 | /**
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2 | *#########################################################################
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3 | * FedoraGS3Connection.java - works with the demo-client for Greenstone 3,
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4 | * of the Greenstone digital library suite from the New Zealand Digital
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5 | * Library Project at the * University of Waikato, New Zealand.
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6 | * <BR><BR>
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7 | * Copyright (C) 2008 New Zealand Digital Library Project
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8 | * <BR><BR>
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9 | * This program is free software; you can redistribute it and/or modify
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10 | * it under the terms of the GNU General Public License as published by
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11 | * the Free Software Foundation; either version 2 of the License, or
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12 | * (at your option) any later version.
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13 | * <BR><BR>
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14 | * This program is distributed in the hope that it will be useful,
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15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 | * GNU General Public License for more details.
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18 | *########################################################################
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19 | */
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20 |
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21 | package org.greenstone.fedora.services;
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22 |
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23 |
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24 | import java.io.StringReader;
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25 |
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26 | import org.apache.log4j.Logger;
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27 | import org.greenstone.fedora.services.FedoraGS3Exception.AuthenticationFailedException;
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28 | import org.greenstone.fedora.services.FedoraGS3Exception.CancelledException;
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29 | import org.greenstone.fedora.services.FedoraGS3Exception.FedoraGS3RunException;
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30 | import org.greenstone.fedora.services.FedoraGS3Exception.NotAFedoraServerException;
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31 | import org.greenstone.gsdl3.util.GSXML;
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32 | import org.w3c.dom.Document;
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33 | import org.w3c.dom.Element;
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34 | import org.w3c.dom.Attr;
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35 | import org.w3c.dom.Text;
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36 | import org.w3c.dom.NodeList;
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37 | import org.w3c.dom.Node;
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38 | import org.xml.sax.InputSource;
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39 |
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40 | import java.io.File;
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41 | import java.util.HashMap;
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42 | import java.util.Properties;
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43 | import java.util.Map;
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44 |
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45 | import javax.swing.JOptionPane;
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46 |
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47 | import org.xml.sax.SAXException;
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48 | import java.io.UnsupportedEncodingException;
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49 | import java.io.IOException;
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50 | import javax.net.ssl.SSLHandshakeException;
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51 | import java.net.ConnectException;
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52 | import java.net.MalformedURLException;
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53 | import java.rmi.RemoteException;
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54 | import javax.xml.parsers.ParserConfigurationException;
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55 | import javax.xml.transform.TransformerException;
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56 |
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57 | /**
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58 | * Class that extends FedoraConnection in order to be able to use
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59 | * Fedora's web services to retrieve the specific datastreams of
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60 | * Greenstone documents stored in Fedora's repository. This class
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61 | * provides methods that convert those datastreams into Greenstone3
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62 | * XML response messages which are returned.
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63 | * @author ak19
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64 | */
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65 | public class FedoraGS3Connection
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66 | extends FedoraConnection implements FedoraToGS3Interface,
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67 | FedoraToGS3Interface.Constants
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68 | {
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69 | /** The logging instance for this class */
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70 | private static final Logger LOG = Logger.getLogger(
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71 | FedoraGS3Connection.class.getName());
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72 |
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73 | /** Default name of Fedora index */
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74 | private static final String DEFAULT_FEDORA_INDEX = "BasicIndex";
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75 |
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76 | /** Complete list of services that are supported our FedoraGS3 would
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77 | * support if everything goes well. If a connection to FedoraGSearch
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78 | * cannot be established, the query services will no longer be
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79 | * available. The actual services supported are given by member
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80 | * variable serviceNames. */
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81 | protected static final String[] SERVICES = {
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82 | "DocumentContentRetrieve", "DocumentMetadataRetrieve",
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83 | "DocumentStructureRetrieve",
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84 | "TextQuery", "FieldQuery",
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85 | "ClassifierBrowse", "ClassifierBrowseMetadataRetrieve"
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86 | };
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87 |
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88 | /** List of services actually supported by our FedoraGS3 repository
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89 | * after construction. If FedoraGenericSearch can't be connected to,
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90 | * then query services will not be offered */
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91 | protected String[] serviceNames;
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92 |
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93 | /** constant CHILDREN indicates that a DocumentStructureRetrieve is to
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94 | * return only the child nodes of a section, not any further descendants */
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95 | protected static final int CHILDREN = 0;
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96 |
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97 | /** constant DESCENDANTS indicates that a DocumentStructureRetrieve is to
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98 | * return all descendants of a section */
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99 | protected static final int DESCENDANTS = 1;
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100 |
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101 | /** The object used to connect to FedoraGenericSearch, which is used
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102 | * for doing full-text searching */
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103 | protected GSearchConnection fedoraGSearch;
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104 |
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105 | /** The url for the wsdl file of FedoraGSearch's web services
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106 | * by default this will be the Fedora server's base URL
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107 | * concatenated to "gsearch/services/FgsOperations?wsdl" */
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108 | protected String gSearchWSDLURL;
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109 |
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110 | /** The last part of the gSearchWSDL URL. The first part is
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111 | * the same as the fedora server's base url. */
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112 | protected String gSearchWSDLSuffix;
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113 |
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114 | /** The name of the index that FedoraGSearch will index the GS3
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115 | * documents into. If no name is specified in the properties file,
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116 | * this will default to FedoraIndex. */
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117 | protected String gSearchIndexName;
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118 |
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119 | /** 5 argument constructor is the same as that of superclass FedoraConnection:
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120 | * @param protocol can be either http or https
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121 | * @param host is the host where the fedora server is listening
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122 | * @param port is the port where the fedora server is listening
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123 | * @param fedoraServerUsername is the username for administrative
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124 | * authentication required to access the fedora server.
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125 | * @param fedoraServerPassword is the password for administrative
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126 | * authentication required to access the fedora server. If no password was set
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127 | * when installing Fedora, leave the field "".
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128 | * Instantiates a FedoraGS3Connection object which connects to Fedora's
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129 | * web services through stub classes and tries to connect to FedoraGSearch's
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130 | * web services through the default WSDL location for it
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131 | * ("gsearch/services/FgsOperations?wsdl"). If another url is to be used,
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132 | * call setGSearchWSDLURL(url) after the constructor instead.
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133 | */
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134 | public FedoraGS3Connection(String protocol, String host, int port,
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135 | String fedoraServerUsername, String fedoraServerPassword)
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136 | throws ParserConfigurationException, MalformedURLException,
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137 | SSLHandshakeException, RemoteException, AuthenticationFailedException,
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138 | NotAFedoraServerException, ConnectException, Exception
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139 | {
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140 | super(protocol, host, port, fedoraServerUsername, fedoraServerPassword);
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141 | // super() will call setInitialisationProperties(properties)
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142 | // And that will try to instantiate the GSearchConnection.
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143 | }
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144 |
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145 | /** No-argument constructor which is the same as that of superclass
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146 | * FedoraConnection: it displays a small dialog requesting input for the
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147 | * host, port, administrative password and username of the fedora server.
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148 | * If no password was set on the fedora repository when installing it,
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149 | * the user can leave the password field blank. */
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150 | public FedoraGS3Connection()
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151 | throws ParserConfigurationException, MalformedURLException,
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152 | CancelledException, ConnectException, RemoteException,
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153 | SSLHandshakeException, Exception
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154 | {
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155 | super();
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156 | // super() will call setInitialisationProperties(properties)
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157 | // And that will try to instantiate the GSearchConnection.
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158 | }
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159 |
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160 | /** Single-argument constructor which is the same as that of superclass
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161 | * FedoraConnection: it takes the name of the properties file where
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162 | * connection initialisation values may already be provided and then
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163 | * displays a small dialog requesting input for the host, port,
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164 | * administrative password and username of the fedora server showing
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165 | * the values in the properties file as default. If the necessary
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166 | * initialisation are not present in the file, the corresponding fields
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167 | * in the dialog will be blank.
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168 | * If no password was set on the fedora repository when installing it,
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169 | * the user can leave the password field blank. */
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170 | public FedoraGS3Connection(File propertiesFilename)
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171 | throws ParserConfigurationException, MalformedURLException,
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172 | CancelledException, ConnectException, RemoteException,
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173 | SSLHandshakeException, Exception
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174 | {
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175 | super(propertiesFilename);
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176 | // super() will call setInitialisationProperties(properties)
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177 | // And that will try to instantiate the GSearchConnection.
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178 | }
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179 |
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180 | /** The superclass constructor calls this method passing any preset
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181 | * properties loaded from a propertiesFile. This method is overridden
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182 | * here in order to instantiate the gSearchConnection based on the
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183 | * - gSearchWSDLSuffix that will be appended to the fedora base url.
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184 | * (If one was not provided in the properties file, gSearchWSDLURL defaults
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185 | * to something of the form
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186 | * "http://<fedorahost:port>/fedoragsearch/services/FgsOperations?wsdl"
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187 | * which is the baseURL of fedora concatenated to the default gSearchWSDLSuffix,
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188 | * "gsearch/services/FgsOperations?wsdl".
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189 | * - name of the index into which the GS3 documents have been indexed
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190 | * and which FedoraGenericSearch should use to perform searches. If none is
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191 | * given in the properties file, then the index name defaults to "FedoraIndex".
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192 | * @param properties is the Properties Map loaded from a properties file
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193 | * (if there was any) which specifies such things as host and port of the
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194 | * FedoraServer, but can also specify the property "gsearch.wsdlURL.suffix".
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195 | * At the end of this method, properties' "gsearch.wsdlURL.suffix" will be set
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196 | * to whatever the final value of this.gSearchWSDLURL' suffix is, and
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197 | * "gsearch.indexName" will be set to to whatever the final value of
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198 | * this.gSearchIndexName is.
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199 | */
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200 | protected void setInitialisationProperties(Properties properties)
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201 | throws ParserConfigurationException, MalformedURLException,
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202 | CancelledException, ConnectException, RemoteException,
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203 | SSLHandshakeException, Exception
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204 | {
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205 | super.setInitialisationProperties(properties);
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206 | // gsearchWSDL URL suffix, if not specified, defaults to
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207 | // "fedoragsearch/services/FgsOperations?wsdl" which is
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208 | // concatenated to the baseURL of fedora to give the gsearchWSDLURL.
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209 | this.gSearchWSDLSuffix = properties.getProperty(
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210 | "gsearch.wsdlURL.suffix", "gsearch/services/FgsOperations?wsdl");
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211 | this.gSearchWSDLURL = this.baseURL + this.gSearchWSDLSuffix;
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212 | // Set the property to whatever this.gSearchWSDLURL is now,
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213 | // so that it will be written out to the properties file again
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214 | properties.setProperty("gsearch.wsdlURL.suffix", this.gSearchWSDLSuffix);
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215 |
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216 | // Similarly for the name of the index FedoraGenericSearch should use
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217 | // when performing searches for GS3 docs stored in Fedora's repository.
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218 | this.gSearchIndexName = properties.getProperty(
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219 | "gsearch.indexName", DEFAULT_FEDORA_INDEX); // default to FedoraIndex
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220 | properties.setProperty("gsearch.indexName", this.gSearchIndexName);
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221 | // Create a connection to FedoraGSearch's web services:
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222 | initSearchFunctionality();
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223 | }
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224 |
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225 | /** Overridden init method to work with the 5 argument constructor, so that we can
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226 | * bypass using setInitialisationProperties() which works with a Properties map.
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227 | */
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228 | protected void init(String protocol, String host, String port,
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229 | String fedoraServerUsername, String fedoraServerPassword)
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230 | throws ParserConfigurationException, MalformedURLException,
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231 | AuthenticationFailedException, RemoteException, Exception
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232 | {
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233 | super.init(protocol, host, port, fedoraServerUsername, fedoraServerPassword);
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234 | this.gSearchWSDLSuffix = "gsearch/services/FgsOperations?wsdl";
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235 | this.gSearchWSDLURL = this.baseURL + this.gSearchWSDLSuffix;
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236 | this.gSearchIndexName = DEFAULT_FEDORA_INDEX;
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237 | initSearchFunctionality();
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238 | }
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239 |
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240 |
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241 | /** Init method that instantiates a GSearchConnection object used
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242 | * to work with the separate FedoraGSearch web services.
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243 | * The url of the WSDL for FedoraGSearch's web services is worked out
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244 | * from the baseURL of the Fedora server.
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245 | */
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246 | protected void initSearchFunctionality()
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247 | {
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248 | try {
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249 | this.fedoraGSearch = null;
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250 | this.fedoraGSearch = new GSearchConnection(
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251 | gSearchWSDLURL, gSearchIndexName);
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252 | this.serviceNames = SERVICES;
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253 | } catch(Exception e){
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254 | LOG.error("Cannot connect to FedoraGSearch's web services at "
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255 | + gSearchWSDLURL + "\nQuery services will not be available.");
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256 | // If an exception occurs, something has gone wrong when
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257 | // trying to connect to FedoraGSearch's web services. This
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258 | // means, we can't offer query services, as that's provided
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259 | // by FedoraGSearch
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260 | serviceNames = null;
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261 | int countOfNonQueryServices = 0;
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262 | for(int i = 0; i < SERVICES.length; i++) {
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263 | // do not count query services
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264 | if(!SERVICES[i].toLowerCase().contains("query")) {
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265 | countOfNonQueryServices++;
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266 | }
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267 | }
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268 | // Services now supported are everything except Query services
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269 | serviceNames = new String[countOfNonQueryServices];
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270 | int j = 0;
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271 | for(int i = 0; i < SERVICES.length; i++) {
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272 | if(!SERVICES[i].toLowerCase().contains("query")) {
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273 | serviceNames[j] = SERVICES[i];
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274 | j++; // valid serviceName, so increment serviceName counter
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275 | }
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276 |
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277 | }
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278 | }
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279 | }
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280 |
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281 | /** @return the gSearchWSDLURL, the url of the WSDL for the
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282 | * FedoraGSearch web services */
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283 | public String getGSearchWSDLURL() { return gSearchWSDLURL; }
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284 |
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285 | /** Sets the member variable gSearchWSDLURL that specify the location of
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286 | * the WSDL file of FedoraGSearch's web services. Then it attempts
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287 | * to instantiate a connection to those web services.
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288 | * @param url is the new url of the GSearch web services WSDL file */
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289 | public void setGSearchWSDLURL(String url) {
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290 | this.gSearchWSDLURL = url;
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291 | initSearchFunctionality();
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292 | }
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293 |
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294 | /** @return the gSearchIndexName, the name of the index Fedora Generic
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295 | * Search will search in (where GS3 docs have been indexed into). */
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296 | public String getGSearchIndexName() { return gSearchIndexName; }
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297 |
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298 | /** Sets the member variable gSearchIndexName that specifies the name
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299 | * of the index containing indexed GS3 documents. Then it attempts
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300 | * to instantiate a connection to the Fedora GSearch web services using
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301 | * this changed value for indexName.
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302 | * @param indexName is the new name of the index containing indexed GS3
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303 | * docs that GSearch should search in. */
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304 | public void setGSearchIndexName(String indexName) {
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305 | this.gSearchIndexName = indexName;
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306 | initSearchFunctionality();
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307 | }
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308 |
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309 | /** @return the array of the services actually supported by FedoraGS3 */
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310 | protected String[] getServiceNames() { return this.serviceNames;}
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311 |
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312 | /**
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313 | * For finding out if the sectionNumber is given as part of the docID.
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314 | * @param docID is the String that contains the docPID and may also
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315 | * contain the section number.
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316 | * @return true if the document identifier docID contains a section-
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317 | * number, and false if it consists solely of the docPID.
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318 | * That is, true is returned if
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319 | * <pre>docID = "greenstone:colName-<docPID>-<sectionNum>"</pre>
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320 | * and false is returned if
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321 | * <pre>docID = "greenstone:colName-<docPID>"</pre>
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322 | * */
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323 | protected boolean containsSectionNumber(String docID) {
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324 | // if there are two hyphens in the docID, then there are sections
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325 | // (and the section number is appended at end of docID)
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326 | // docID = "greenstone:colName-<docPID>-<sectionNum>"
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327 | return (docID.lastIndexOf(HYPHEN) != docID.indexOf(HYPHEN));
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328 | }
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329 |
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330 | /** This method will extract the docPID from docID and return it.
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331 | * (If a sectionNumber is suffixed to the docID, the docPID which is
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332 | * the prefix is returned; otherwise the docID is the docPID and is
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333 | * returned)
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334 | * @param docID is the String that contains the docPID and may also
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335 | * contain the section number.
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336 | * @return only the docPID portion of the docID.
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337 | */
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338 | protected String getDocPIDFromDocID(String docID) {
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339 | if(containsSectionNumber(docID))
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340 | return docID.substring(0, docID.lastIndexOf(HYPHEN));
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341 | // else (if there's no sectionNumber), docID is the docPID
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342 | return docID;
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343 | }
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344 |
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345 | /** This method will return the section Number, if there's any
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346 | * suffixed to the docID. Otherwise it will return the empty string
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347 | * @param docID is the String that contains the docPID and may also
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348 | * contain the section number.
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349 | * @return only the sectionID portion of the docID - if any, else "".
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350 | */
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351 | protected String getSectionIDFromDocID(String docID) {
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352 | if(containsSectionNumber(docID))
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353 | return docID.substring(
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354 | docID.lastIndexOf(HYPHEN)+1, docID.length());
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355 | return "";
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356 | }
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357 |
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358 | /** Given a list of collectionIDs, returns a GS3 DocumentMetadataRetrieve
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359 | * response message that gives the metadata for each collection identified
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360 | * @param collIDs is an array of fedora pids identifying collections in the
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361 | * fedora repository
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362 | * @return a GS3 DocumentMetadataRetrieve response message containing the
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363 | * EX metadata for all the requested collections */
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364 | public String getCollectionMetadata(String[] collIDs) {
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365 | return getMetadata(collIDs);
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366 | }
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367 |
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368 | /** Given a list of document identifiers, a GS3 DocumentMetadataRetrieve
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369 | * response message is returned containing the metadata for each document.
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370 | * @param docIDs is an array of document identifiers (docID can either be
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371 | * <pid>s items (documents) in the fedora repository, or
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372 | * "<pid>-sectionNumber".
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373 | * @return a GS3 DocumentMetadataRetrieve response message containing the
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374 | * EX, DC, DLS metadata for all the requested documents */
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375 | public String getDocumentMetadata(String[] docIDs) {
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376 | return getMetadata(docIDs);
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377 | }
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378 |
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379 | /** Given a collectionID, returns a GS3 DocumentMetadataRetrieve
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380 | * response message that gives the metadata for the collection identified
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381 | * @param collID is a fedora pid identifying a collection in its repository
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382 | * @return a GS3 DocumentMetadataRetrieve response message containing the
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383 | * EX metadata for the requested collection */
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384 | public String getCollectionMetadata(String collID) {
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385 | return getMetadata(new String[] {collID});
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386 | }
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387 |
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388 | /** Given a document identifier, returns a GS3 DocumentMetadataRetrieve
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389 | * response message containing the metadata for the document.
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390 | * @param docID is a document identifier (docID can either be a <pid>
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391 | * of an item (document) in the fedora repository, or it can be
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392 | * "<pid>-sectionNumber".
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393 | * @return a GS3 DocumentMetadataRetrieve response message containing the
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394 | * EX, DC, DLS metadata for the requested document */
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395 | public String getDocumentMetadata(String docID) {
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396 | return getMetadata(new String[] {docID});
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397 | }
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398 |
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399 | /** @return a greenstone DocumentMetadataRetrieve response for the
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400 | * documents or collections indicated by the docIDsOrCollIDs.
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401 | * @param docIDsOrCollIDs is an array of identifiers which may be either the
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402 | * fedora pids for collections, or otherwise may be a document identifier.
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403 | * In the last case, the document ID may consist of either
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404 | * "documentPID-sectionNumber" or may just be just fedora documentPID */
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405 | public String getMetadata(String[] docIDsOrCollIDs)
|
---|
406 | {
|
---|
407 | Document doc = builder.newDocument();
|
---|
408 | FedoraGS3RunException ex = null;
|
---|
409 |
|
---|
410 | Element docNodeList = doc.createElement(
|
---|
411 | GSXML.DOC_NODE_ELEM+GSXML.LIST_MODIFIER);
|
---|
412 |
|
---|
413 | try{
|
---|
414 | for(int i = 0; i < docIDsOrCollIDs.length; i++) {
|
---|
415 | // create the <documentNode> containing the metadata
|
---|
416 | // for each document docID
|
---|
417 | Element docNode = getMetadata(doc, docIDsOrCollIDs[i]);
|
---|
418 | docNodeList.appendChild(docNode);
|
---|
419 | }
|
---|
420 | } catch(Exception e) {
|
---|
421 | ex = new FedoraGS3RunException(e);
|
---|
422 | ex.setSpecifics("EX (and/or DC, DLS) metadata datastream");
|
---|
423 | }
|
---|
424 |
|
---|
425 | Element responseMsg = createResponseMessage(doc, docNodeList, ex,
|
---|
426 | GSXML.REQUEST_TYPE_PROCESS, "DocumentMetadataRetrieve");
|
---|
427 | try{
|
---|
428 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
429 | } catch(TransformerException e) {
|
---|
430 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
431 | + " " + e;
|
---|
432 | }
|
---|
433 | }
|
---|
434 |
|
---|
435 | /** Method that takes a new DOM document, as well as an identifier of either
|
---|
436 | * a collection or document (which may be a fedora pid for the collection
|
---|
437 | * or document, or may be the documentPid-sectionNumber for a document) and
|
---|
438 | * returns a documentNode element for it:
|
---|
439 | * <documentNode><metadataList>
|
---|
440 | * <metadata name="">value</metadata>
|
---|
441 | * ...
|
---|
442 | * </metadataList></documentNode>
|
---|
443 | * @return documentNode containing the metadata for the collection or
|
---|
444 | * document given by parameter ID
|
---|
445 | * @param id denotes a collection pid, a document pid or a docID of the
|
---|
446 | * form "documentpid-sectionNumber" */
|
---|
447 | protected Element getMetadata(Document doc, String id)
|
---|
448 | throws RemoteException, UnsupportedEncodingException,
|
---|
449 | SAXException, IOException
|
---|
450 | {
|
---|
451 | // We're going to create the documentNode nested inside the following
|
---|
452 | // documentNodeList:
|
---|
453 | // <documentNodeList>
|
---|
454 | // <documentNode nodeID=""><metadataList>
|
---|
455 | // <metadata name="">value</metadata>
|
---|
456 | // </metadataList></documentNode>
|
---|
457 | // <documentNode>...</documentNode>
|
---|
458 | // </documentNodeList>
|
---|
459 | // <documentNodeList>
|
---|
460 |
|
---|
461 | // <documentNode nodeID="docID"> - the docNode on which a structure
|
---|
462 | // retrieve is being performed
|
---|
463 | Element docNode = doc.createElement(GSXML.DOC_NODE_ELEM);
|
---|
464 | Attr attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
465 | attribute.setValue(id);
|
---|
466 | docNode.setAttributeNode(attribute);
|
---|
467 |
|
---|
468 | // <metadataList>
|
---|
469 | Element metadataList = doc.createElement(
|
---|
470 | GSXML.METADATA_ELEM+GSXML.LIST_MODIFIER);
|
---|
471 |
|
---|
472 | String ex = "";
|
---|
473 | String dc = "";
|
---|
474 | String dls = "";
|
---|
475 | if(id.endsWith(_COLLECTION)) { // docID refers to a collection
|
---|
476 | // Obtain the "EX" datastream (extracted metadata) for the collection
|
---|
477 | ex = this.getEX(id);
|
---|
478 | }
|
---|
479 | else { // docID refers to a document
|
---|
480 | // work out the document's fedora PID and section ID, and then
|
---|
481 | // obtain the EX (extracted metadata) and DC datastreams for the doc
|
---|
482 |
|
---|
483 | // Note that EX/DC for pid="greenstone:<colname>-docPID-1"
|
---|
484 | // is the same as for pid="greenstone:<colname>-docPID"
|
---|
485 | // That is, <Section id="1"> refers to the toplevel document docPID
|
---|
486 | // If requested for top-level document, there may also be DLS meta
|
---|
487 | String sectionID = getSectionIDFromDocID(id);
|
---|
488 | String docPID = getDocPIDFromDocID(id);
|
---|
489 | if(sectionID.equals("") || sectionID.equals("1")) {
|
---|
490 | // metadata of toplevel document is requested
|
---|
491 | ex = this.getEX(docPID); // slightly faster than doing
|
---|
492 | //getSectionEXMetadata(docID, "1")
|
---|
493 | dc = this.getDC(docPID);
|
---|
494 | dls = this.getDLS(docPID);
|
---|
495 | }
|
---|
496 | else {
|
---|
497 | ex = getSectionEXMetadata(docPID, sectionID);
|
---|
498 | dc = getSectionDCMetadata(docPID, sectionID);
|
---|
499 | }
|
---|
500 | }
|
---|
501 |
|
---|
502 | // Adding in metadata sets in alphabetical order
|
---|
503 | // DC metadata for a top-level document is different from EX, DLS:
|
---|
504 | // only the element's namespace prefix is "dc", the rest of a tagname
|
---|
505 | // is unknown.
|
---|
506 | if(!dc.equals("")) {
|
---|
507 | addMetadataWithNamespacedTagNames(doc, metadataList,
|
---|
508 | dc, DC);
|
---|
509 | }
|
---|
510 |
|
---|
511 | // Check if we were supposed to process dls and dc metadata
|
---|
512 | // as well. We only ever do this for top-level documents,
|
---|
513 | // in which case, dls and dc will be non-empty strings
|
---|
514 | if(!dls.equals("")) {
|
---|
515 | addMetadataWithFixedTagName(doc, metadataList, dls, DLS);
|
---|
516 | }
|
---|
517 |
|
---|
518 | // we definitely have an EX metadatastream for each
|
---|
519 | // collection object, top-level document object,
|
---|
520 | // and document section item
|
---|
521 | addMetadataWithFixedTagName(doc, metadataList, ex, EX);
|
---|
522 |
|
---|
523 | // now the metadataList has been built up
|
---|
524 | docNode.appendChild(metadataList);
|
---|
525 |
|
---|
526 | return docNode; // return <documentNode> containing the metadata
|
---|
527 | }
|
---|
528 |
|
---|
529 | /** This method retrieves all the metadata elements in the metaDataStream
|
---|
530 | * parameter of the form <"metadataSetNS:metadata">"value"</metadata> where
|
---|
531 | * metadataSetNS is the namespace of each tag, and creates a new element of
|
---|
532 | * the form <metadata name="metadataSetNS:metadata">"value"</metadata> for
|
---|
533 | * each. Each of these are then appended to the metadataList parameter.
|
---|
534 | * @param doc is the Document object using which the new metadata Elements
|
---|
535 | * are to be constructed
|
---|
536 | * @param metadataList is the <metadataList> Element to which the new
|
---|
537 | * metadata Elements are to be appended as children.
|
---|
538 | * @param metaDatastream the metadata datastream in string form (e.g. the
|
---|
539 | * Dublin Core metadata stored in the Fedora repository).
|
---|
540 | * @param metadataSet is the constant datastream identifier, e.g. "DC".
|
---|
541 | * At present this method only applies to the DC metadata as that's the only
|
---|
542 | * one where each tagname is different except for the constant dc: namespace.
|
---|
543 | */
|
---|
544 | protected void addMetadataWithNamespacedTagNames(Document doc,
|
---|
545 | Element metadataList, String metaDatastream, String metadataSet)
|
---|
546 | throws SAXException, IOException
|
---|
547 | {
|
---|
548 | Document src = builder.parse(
|
---|
549 | new InputSource(new StringReader(metaDatastream)));
|
---|
550 |
|
---|
551 | // The following doesn't work for some reason: to retrieve all elements
|
---|
552 | // whose namespace prefix starts with "dc", we pass "*" for localName
|
---|
553 | //NodeList dcMetaTags = src.getElementsByTagNameNS(DC.toLowerCase(), "*");
|
---|
554 |
|
---|
555 | // Longer way: get the children of the root document
|
---|
556 | NodeList children = src.getDocumentElement().getChildNodes();
|
---|
557 |
|
---|
558 | for(int i = 0; i < children.getLength(); i++) {
|
---|
559 | String nodeName = children.item(i).getNodeName();
|
---|
560 | // check that the nodename starts with the "dc" namespace,
|
---|
561 | // which simultaneously ensures that the node's an element:
|
---|
562 | if(nodeName.startsWith(DC.toLowerCase())) {
|
---|
563 | // need to have a period for Greenstone instead of Fedora's colon
|
---|
564 | nodeName = nodeName.replace(COLON, PERIOD);
|
---|
565 | Element metatag = (Element)children.item(i);
|
---|
566 | String value = FedoraCommons.getValue(metatag);
|
---|
567 | // <dc:tagname>value</dc:tagname>
|
---|
568 | // we're going to put use this in our metadata element as
|
---|
569 | // <metadata name="dc:tagname">value</metadata>
|
---|
570 |
|
---|
571 | // create metadata of (name, value) pairs in target DOM (doc)
|
---|
572 | Element metadata = doc.createElement(GSXML.METADATA_ELEM);
|
---|
573 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
574 | attribute.setValue(nodeName);
|
---|
575 | metadata.setAttributeNode(attribute);
|
---|
576 | Text content = doc.createTextNode(value);
|
---|
577 | metadata.appendChild(content);
|
---|
578 | metadataList.appendChild(metadata);
|
---|
579 | }
|
---|
580 | }
|
---|
581 | }
|
---|
582 |
|
---|
583 | /** This method retrieves all the metadata elements in the metaDataStream
|
---|
584 | * of the form <"namespace:"metadata name="metadataName">value</metadata>
|
---|
585 | * where "namespace" is the namespace prefix of each tag, and metadataName
|
---|
586 | * is the name of the metadata (like author, title). For each element
|
---|
587 | * it creates a corresponding new element of the form
|
---|
588 | * <metadata name="namespace:metadataName">value</metadata>. Each of these
|
---|
589 | * are then appended to the metadataList parameter.
|
---|
590 | * @param doc is the Document object using which the new metadata Elements
|
---|
591 | * are to be constructed
|
---|
592 | * @param metadataList is the <metadataList> Element to which the new
|
---|
593 | * metadata Elements are to be appended as children.
|
---|
594 | * @param metaDatastream the metadata datastream in string form (e.g. the
|
---|
595 | * EX/Greenstone extracted metadata or DLS metadata stored in the Fedora
|
---|
596 | * repository).
|
---|
597 | * @param metadataSet is the constant datastream identifier,
|
---|
598 | * e.g. "DLS" or "EX".
|
---|
599 | * At present this method applies to the DLS and EX metadata as they have
|
---|
600 | * constant tagnames throughout.
|
---|
601 | */
|
---|
602 | protected void addMetadataWithFixedTagName(Document doc,
|
---|
603 | Element metadataList, String metaDatastream, String metadataSet)
|
---|
604 | throws SAXException, IOException
|
---|
605 | {
|
---|
606 | // Namespace prefix can be "ex:" or "dls:"
|
---|
607 | String namespacePrefix = "";
|
---|
608 | if(!metadataSet.equals(EX)) {
|
---|
609 | // need to have a period for Greenstone instead of Fedora's colon
|
---|
610 | namespacePrefix = metadataSet.toLowerCase() + PERIOD;
|
---|
611 | }
|
---|
612 |
|
---|
613 | Document src = builder.parse(
|
---|
614 | new InputSource(new StringReader(metaDatastream)));
|
---|
615 | NodeList metaTags = src.getElementsByTagName(
|
---|
616 | metadataSet.toLowerCase()+COLON+METADATA);
|
---|
617 | // Looking for tagnames: <ex:metadata> or <dls:metadata>
|
---|
618 |
|
---|
619 | for(int i = 0; i < metaTags.getLength(); i++) {
|
---|
620 | Element metatag = (Element)metaTags.item(i);
|
---|
621 |
|
---|
622 | // extract the metadata of (name, value) pairs from src DOM
|
---|
623 | // look for <metadata name="name">value</metadata>
|
---|
624 | String name = metatag.hasAttribute(NAME) ?
|
---|
625 | metatag.getAttribute(NAME) : "";
|
---|
626 | // sometimes, there are several metadata for the same name, in this
|
---|
627 | // case, look for a qualifier and append its value to the name to
|
---|
628 | // distinguish it uniquely:
|
---|
629 | if(metatag.hasAttribute(QUALIFIER)) {
|
---|
630 | name = name + HYPHEN + metatag.getAttribute(QUALIFIER);
|
---|
631 | }
|
---|
632 | String value = FedoraCommons.getValue(metatag);
|
---|
633 |
|
---|
634 | // create metadata of (name, value) pairs in target DOM (doc)
|
---|
635 | Element metadata = doc.createElement(GSXML.METADATA_ELEM);
|
---|
636 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
637 | attribute.setValue(namespacePrefix + name);
|
---|
638 | // prefix with namespace, if any
|
---|
639 | metadata.setAttributeNode(attribute);
|
---|
640 | Text content = doc.createTextNode(value);
|
---|
641 | metadata.appendChild(content);
|
---|
642 |
|
---|
643 | metadataList.appendChild(metadata);
|
---|
644 | }
|
---|
645 | }
|
---|
646 |
|
---|
647 | /** Given a document identifier, returns a GS3 DocumentMetadataRetrieve
|
---|
648 | * response message containing ONLY the Title metadata for the document.
|
---|
649 | * @param docID is a document identifier (docID can either be a <pid>
|
---|
650 | * of an item (document) in the fedora repository, or it can be
|
---|
651 | * "<pid>-sectionNumber".
|
---|
652 | * @return a GS3 DocumentMetadataRetrieve response message containing the
|
---|
653 | * Title metadata for the requested document */
|
---|
654 | public String getTitleMetadata(String docID) {
|
---|
655 | return getTitleMetadata(new String[] { docID });
|
---|
656 | }
|
---|
657 |
|
---|
658 | /** Given a document identifier, returns a GS3 DocumentMetadataRetrieve
|
---|
659 | * response message containing ONLY the Title metadata for the documents.
|
---|
660 | * @param docIDs is a list of document identifiers (where docID can either be
|
---|
661 | * a <pid> of an item (document) in the fedora repository, or it can be
|
---|
662 | * "<pid>-sectionNumber".
|
---|
663 | * @return a GS3 DocumentMetadataRetrieve response message containing the
|
---|
664 | * Title metadata for all the requested documents */
|
---|
665 | public String getTitleMetadata(String[] docIDs) {
|
---|
666 | // Must create message of the following form:
|
---|
667 | // <documentNodeList><documentNode nodeID="docID">
|
---|
668 | // <metadataList><metadata name="Title">sometitle</metadata>
|
---|
669 | // </metadataList></documentNode>
|
---|
670 |
|
---|
671 | Document doc = builder.newDocument();
|
---|
672 | FedoraGS3RunException ex = null;
|
---|
673 |
|
---|
674 | Element docNodeList = doc.createElement(
|
---|
675 | GSXML.DOC_NODE_ELEM+GSXML.LIST_MODIFIER);
|
---|
676 | try{
|
---|
677 | for(int i = 0; i < docIDs.length; i++) {
|
---|
678 | Element docNode = getTitleMetadata(doc, docIDs[i]);
|
---|
679 | docNodeList.appendChild(docNode);
|
---|
680 | }
|
---|
681 | }catch(Exception e) {
|
---|
682 | ex = new FedoraGS3RunException(e);
|
---|
683 | //ex.setSpecifics("EX metadata datastream PID: |" + docIDs[i] + "|"); // for debugging PID
|
---|
684 | ex.setSpecifics("EX metadata datastream");
|
---|
685 | }
|
---|
686 |
|
---|
687 | Element responseMsg = createResponseMessage(doc, docNodeList, ex,
|
---|
688 | GSXML.REQUEST_TYPE_PROCESS, "DocumentMetadataRetrieve");
|
---|
689 | try{
|
---|
690 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
691 | } catch(TransformerException e) {
|
---|
692 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
693 | + " " + e;
|
---|
694 | }
|
---|
695 | }
|
---|
696 |
|
---|
697 | /** Method that takes a new DOM document, as well as an identifier of either
|
---|
698 | * a document or document section and returns a documentNode element containing
|
---|
699 | * the title metadata for it:
|
---|
700 | * <documentNode nodeID="docID"><metadataList>
|
---|
701 | * <metadata name="Title">sometitle</metadata>
|
---|
702 | * </metadataList></documentNode>
|
---|
703 | * @return documentNode containing the metadata for the collection or
|
---|
704 | * document given by parameter ID
|
---|
705 | * @param docID denotes the id of a document or a document section, so id
|
---|
706 | * is either a document-pid or it's of the form documentpid-sectionNumber */
|
---|
707 | protected Element getTitleMetadata(Document doc, String docID)
|
---|
708 | throws RemoteException, UnsupportedEncodingException,
|
---|
709 | SAXException, IOException
|
---|
710 | {
|
---|
711 | // Returns a docNode element of the following form:
|
---|
712 | // <documentNode nodeID="docID">
|
---|
713 | // <metadataList><metadata name="Title">sometitle</metadata></metadataList>
|
---|
714 | // </documentNode>
|
---|
715 |
|
---|
716 | // <documentNode nodeID="docID">
|
---|
717 | Element docNode = doc.createElement(GSXML.DOC_NODE_ELEM);
|
---|
718 | Attr attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
719 | attribute.setValue(docID);
|
---|
720 | docNode.setAttributeNode(attribute);
|
---|
721 |
|
---|
722 | // <metadataList>
|
---|
723 | Element metaList = doc.createElement(
|
---|
724 | GSXML.METADATA_ELEM+GSXML.LIST_MODIFIER);
|
---|
725 | // <metadata name="Title">
|
---|
726 | Element metadata = doc.createElement(GSXML.METADATA_ELEM);
|
---|
727 | // if we connect it all up (append children), we can immediately add
|
---|
728 | // the name attribute into the metadata element:
|
---|
729 | metaList.appendChild(metadata);
|
---|
730 | docNode.appendChild(metaList);
|
---|
731 | metadata.setAttribute(GSXML.NAME_ATT, TITLE); // immediately add attribute
|
---|
732 |
|
---|
733 | String title = "";
|
---|
734 | String sectionID = getSectionIDFromDocID(docID);
|
---|
735 | String docPID = getDocPIDFromDocID(docID);
|
---|
736 |
|
---|
737 | // check if title of toplevel document is requested
|
---|
738 | if(sectionID.equals(""))
|
---|
739 | title = this.getDocTitle(docPID);
|
---|
740 | else { // title of document section
|
---|
741 | title = this.getSectionTitle(docPID, sectionID);
|
---|
742 | }
|
---|
743 |
|
---|
744 | metadata.appendChild(doc.createTextNode(title));
|
---|
745 |
|
---|
746 | return docNode;
|
---|
747 | }
|
---|
748 |
|
---|
749 |
|
---|
750 | /** @return the documentStructure of the document or section given by docID.
|
---|
751 | * The structure is returned in the XML format of a Greenstone3
|
---|
752 | * DocumentStructureRetrieve response message. This method returns the entire
|
---|
753 | * subSection of the docID (that is, all descendants included).
|
---|
754 | * @param docID the identifier for the document whose structure is required.
|
---|
755 | * This is of the format "greenstone:<collectionName>-<docPID>"
|
---|
756 | * OR "greenstone:<collectionName>-<docPID>-<sectioNumber>"
|
---|
757 | * where "greenstone:<collectionName>-<docPID>-1" is the same as
|
---|
758 | * "greenstone:<collectionName>-<docPID>" and will return the
|
---|
759 | * same response */
|
---|
760 | public String getDocumentStructure(String docID) {
|
---|
761 | return getStructure(new String[]{docID}, DESCENDANTS);
|
---|
762 | }
|
---|
763 |
|
---|
764 | /** @return a view of the structure of the document or section given by docID
|
---|
765 | * which contains only the section and its direct children. This structure is
|
---|
766 | * returned in the XML format of a Greenstone3 DocumentStructureRetrieve
|
---|
767 | * response message.
|
---|
768 | * @param docID the identifier for the document whose structure is required.
|
---|
769 | * This is of the format "greenstone:<collectionName>-<docPID>"
|
---|
770 | * OR "greenstone:<collectionName>-<docPID>-<sectioNumber>"
|
---|
771 | * where "greenstone:<collectionName>-<docPID>-1" is the same as
|
---|
772 | * "greenstone:<collectionName>-<docPID>" and will return the
|
---|
773 | * same response */
|
---|
774 | public String getChildren(String docID) {
|
---|
775 | return getStructure(new String[]{docID}, CHILDREN);
|
---|
776 | }
|
---|
777 |
|
---|
778 | /** @return the documentStructure of the documents or sections given by docIDs.
|
---|
779 | * The structure is returned in the XML format of a Greenstone3
|
---|
780 | * DocumentStructureRetrieve response message. This method returns the entire
|
---|
781 | * subSection of each docID (that is, all descendants included).
|
---|
782 | * @param docIDs is an array of identifiers for the documents whose structures
|
---|
783 | * are required.
|
---|
784 | * This is of the format "greenstone:<collectionName>-<docPID>"
|
---|
785 | * OR "greenstone:<collectionName>-<docPID>-<sectioNumber>"
|
---|
786 | * where "greenstone:<collectionName>-<docPID>-1" is the same as
|
---|
787 | * "greenstone:<collectionName>-<docPID>" and will return the
|
---|
788 | * same response */
|
---|
789 | public String getDocumentStructure(String[] docIDs) {
|
---|
790 | return getStructure(docIDs, DESCENDANTS);
|
---|
791 | }
|
---|
792 |
|
---|
793 | /** @return the documentStructure of the documents or sections given by docIDs
|
---|
794 | * but only the sections and their children (not any further descendants).
|
---|
795 | * The structure is returned in the XML format of a Greenstone3
|
---|
796 | * DocumentStructureRetrieve response message.
|
---|
797 | * @param docIDs the identifiers for the documents whose structures are
|
---|
798 | * required. The docids are of the format "greenstone:<collectionName>-<docPID>"
|
---|
799 | * OR "greenstone:<collectionName>-<docPID>-<sectioNumber>"
|
---|
800 | * where "greenstone:<collectionName>-<docPID>-1" is the same as
|
---|
801 | * "greenstone:<collectionName>-<docPID>" and will return the
|
---|
802 | * same response */
|
---|
803 | public String getChildren(String[] docIDs) {
|
---|
804 | return getStructure(docIDs, CHILDREN);
|
---|
805 | }
|
---|
806 |
|
---|
807 | /**
|
---|
808 | * Returns a greenstone3 DocumentStructureRetrieve XML response message
|
---|
809 | * containing the document structures for the given docIDs.
|
---|
810 | * Similar to FedoraConnection.getTOC(), but instead of fedora formatted XML,
|
---|
811 | * greenstone formatted XML is returned. The requested section of the table
|
---|
812 | * of contents (TOC) for a document is converted into the greenstone3 xml
|
---|
813 | * format that is returned upon DocumentStructureRetrieve requests.
|
---|
814 | * @param docIDs the documentIDs for which the section's structure is returned;
|
---|
815 | * where a docID is either a fedora pid <docPID> or <docPID>-<sectionNumber>.
|
---|
816 | * @param levels - either CHILDREN or DESCENDANTS.
|
---|
817 | * CHILDREN returns only the first-level descendants (children) of the
|
---|
818 | * requested document sections indicated by docIDs.
|
---|
819 | * DESCENDANTS returns all descendants of all the document-sections denoted by
|
---|
820 | * docIDs.
|
---|
821 | * @return a greenstone3 DocumentStructureRetrieve XML response message in
|
---|
822 | * String format with the structure of the docIDs requested.
|
---|
823 | */
|
---|
824 | protected String getStructure(String[] docIDs, int levels)
|
---|
825 | {
|
---|
826 | Document doc = builder.newDocument();
|
---|
827 | FedoraGS3RunException ex = null;
|
---|
828 | // <documentNodeList>
|
---|
829 | Element docNodeList = doc.createElement(
|
---|
830 | GSXML.DOC_NODE_ELEM+GSXML.LIST_MODIFIER);
|
---|
831 |
|
---|
832 | try{
|
---|
833 | // append the <documentNodes> for the docIDs
|
---|
834 | // to the docNodeList
|
---|
835 | getStructureElement(docNodeList, docIDs, levels);
|
---|
836 | } catch(Exception e) {
|
---|
837 | ex = new FedoraGS3RunException(e);
|
---|
838 | ex.setSpecifics("(requested portion of) TOC datastream");
|
---|
839 | }
|
---|
840 | // insert our <documentNodeList> into a GS3 response message
|
---|
841 | Element responseMsg = createResponseMessage(doc, docNodeList, ex,
|
---|
842 | GSXML.REQUEST_TYPE_PROCESS, "DocumentStructureRetrieve");
|
---|
843 | try{
|
---|
844 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
845 | } catch(TransformerException e) {
|
---|
846 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
847 | + " " + e;
|
---|
848 | }
|
---|
849 | }
|
---|
850 |
|
---|
851 | /** Given a <documentNodeList> portion of a greenstone3
|
---|
852 | * DocumentStructureRetrieve XML response message, this method will populate
|
---|
853 | * it with the <documentNodes> that represent the structure of the given docIDs.
|
---|
854 | * @param docNodeList is a <documentNodeList> to which <documentNodes> of
|
---|
855 | * the doc structures are appended.
|
---|
856 | * @param docIDs the documentIDs for which the section's structure is returned;
|
---|
857 | * where a docID is either a fedora pid <docPID> or <docPID>-<sectionNumber>.
|
---|
858 | * @param levels - either CHILDREN or DESCENDANTS.
|
---|
859 | * CHILDREN returns only the first-level descendants (children) of the
|
---|
860 | * requested document sections indicated by docIDs.
|
---|
861 | * DESCENDANTS returns all descendants of all the document-sections denoted by
|
---|
862 | * docIDs.
|
---|
863 | */
|
---|
864 | protected void getStructureElement(Element docNodeList,
|
---|
865 | String[] docIDs, int levels)
|
---|
866 | throws RemoteException, UnsupportedEncodingException, SAXException,
|
---|
867 | IOException
|
---|
868 | {
|
---|
869 | // process each docID
|
---|
870 | for(int i = 0; i < docIDs.length; i++) {
|
---|
871 | // work out the document's fedora PID and section ID
|
---|
872 | String sectionID = getSectionIDFromDocID(docIDs[i]);
|
---|
873 | String docPID = getDocPIDFromDocID(docIDs[i]);
|
---|
874 |
|
---|
875 | // get the required section, along with children or descendants
|
---|
876 | Element srcDocElement = null;
|
---|
877 | if(levels == CHILDREN) // get the requested section with its children
|
---|
878 | srcDocElement = this.getChildrenOfSectionXML(docPID, sectionID);
|
---|
879 | else // levels == DESCENDANTS, get the section with all its descendants
|
---|
880 | srcDocElement = this.getSubsectionXML(docPID, sectionID);
|
---|
881 |
|
---|
882 | // copy-and-convert that structure into a structure format for GS3
|
---|
883 | Element docNode = getStructure(docNodeList.getOwnerDocument(),
|
---|
884 | docIDs[i], docPID, srcDocElement);
|
---|
885 |
|
---|
886 | // add it to our list of documentNodes
|
---|
887 | docNodeList.appendChild(docNode);
|
---|
888 | }
|
---|
889 | }
|
---|
890 |
|
---|
891 | /**
|
---|
892 | * Takes the portion of the XML document outlining the structure of the
|
---|
893 | * document (section)--in the format this is stored in Fedora--and returns
|
---|
894 | * Greenstone 3 DOM XML format for outlining document structure.
|
---|
895 | * @return a <documentNode> element that contains a greenstone3
|
---|
896 | * DocumentStructureRetrieve XML corresponding to the parameter Element section
|
---|
897 | * (which is in fedora XML), for the document indicated by docID.
|
---|
898 | * @param requestingDocID is the identifier of the document for which the
|
---|
899 | * structure was requested. It's this document's children or descendants that
|
---|
900 | * will be returned. Note that this is not always the same as (clear from)
|
---|
901 | * parameter docID.
|
---|
902 | * @param docID is the documentID for which the section's structure is
|
---|
903 | * returned where docID = "docPID-sectionNumber".
|
---|
904 | * @param section - the fedora section XML that is being mirrored in
|
---|
905 | * greenstone3 format.
|
---|
906 | */
|
---|
907 | protected Element getStructure(Document doc, String requestingDocID,
|
---|
908 | String docID, Element section)
|
---|
909 | {
|
---|
910 | // we want to mirror the section's DOM (given in fedora XML) in
|
---|
911 | // greenstone3's XML for a DocumentStructureRetrieve response.
|
---|
912 |
|
---|
913 | // <documentNode nodeID="docID"> - the docNode on which a structure retrieve
|
---|
914 | // is being performed
|
---|
915 | Element docNode = doc.createElement(GSXML.DOC_NODE_ELEM);
|
---|
916 | Attr attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
917 | attribute.setValue(requestingDocID); //requestingDocID.replace(HYPHEN+SECTION, "")
|
---|
918 | docNode.setAttributeNode(attribute);
|
---|
919 |
|
---|
920 | // <nodeStructure>
|
---|
921 | Element nodeStructure = doc.createElement(GSXML.NODE_STRUCTURE_ELEM);
|
---|
922 |
|
---|
923 | // <documentNode nodeID="docID" docType="hierarchy" nodeType="root">
|
---|
924 | Element rootNode = createDocNodeFromSubsection(doc, section, docID);
|
---|
925 |
|
---|
926 | // fills in the subtree of the rootNode in our nodeStructure element
|
---|
927 | createDocStructure(doc, section, rootNode, docID);
|
---|
928 | //where section represents the root section
|
---|
929 |
|
---|
930 | nodeStructure.appendChild(rootNode);
|
---|
931 | docNode.appendChild(nodeStructure);
|
---|
932 | return docNode;
|
---|
933 | }
|
---|
934 |
|
---|
935 | /** Recursive method that creates a documentStructure mirroring parameter
|
---|
936 | * section, starting from parameter parent down to all descendants
|
---|
937 | * @param section is the XML <Section> in the fedora repository's TOC
|
---|
938 | * for the docPID whose substructure is to be mirrored
|
---|
939 | * @param parent is the XML documentNode in the greenstone repository whose
|
---|
940 | * descendants created by this method will correspond to the descendants of
|
---|
941 | * parameter section.
|
---|
942 | * @param doc is the document containing the parent;
|
---|
943 | * @param docPID is the prefix of all nodeIDs in the parent's structure
|
---|
944 | */
|
---|
945 | protected void createDocStructure(
|
---|
946 | Document doc, Element section, Element parent, String docPID)
|
---|
947 | {
|
---|
948 | // get the section's children (if any)
|
---|
949 | NodeList children = section.getChildNodes();
|
---|
950 | for(int i = 0; i < children.getLength(); i++) {
|
---|
951 | Node n = children.item(i);
|
---|
952 |
|
---|
953 | if(n.getNodeName().equals(SECTION_ELEMENT)) {
|
---|
954 | //then we know it's an element AND that its tagname is "Section"
|
---|
955 | Element subsection = (Element)n;
|
---|
956 | Element child = createDocNodeFromSubsection(doc, subsection, docPID);
|
---|
957 | parent.appendChild(child);
|
---|
958 |
|
---|
959 | // recursion call on newly found child-element and subsection
|
---|
960 | createDocStructure(doc, subsection, child, docPID);
|
---|
961 | }
|
---|
962 | }
|
---|
963 | }
|
---|
964 |
|
---|
965 | /** Given a particular subsection element, this method creates a
|
---|
966 | * Greenstone3 DocumentNode element that mirrors it.
|
---|
967 | * @param doc is the document that will contain the created DocumentNode
|
---|
968 | * @param docID is the prefix of all nodeIDs in the parent's structure
|
---|
969 | * @param subSection is the XML <Section> in the fedora repository's
|
---|
970 | * TOC for the docPID which will be mirrored in the greenstone XML
|
---|
971 | * documentNode that will be returned.
|
---|
972 | * @return a greenstone <documentNode> that represents the fedora TOC's
|
---|
973 | * <Section> element passed as parameter subSection. */
|
---|
974 | protected Element createDocNodeFromSubsection(
|
---|
975 | Document doc, Element subSection, String docID)
|
---|
976 | {
|
---|
977 | Element docNode = doc.createElement(GSXML.DOC_NODE_ELEM);
|
---|
978 | Attr docType = doc.createAttribute(GSXML.DOC_TYPE_ATT);
|
---|
979 | docType.setValue(GSXML.DOC_TYPE_HIERARCHY);
|
---|
980 | docNode.setAttributeNode(docType);
|
---|
981 |
|
---|
982 | Attr nodeID = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
983 | String sectionID = subSection.hasAttribute(ID) ?
|
---|
984 | subSection.getAttribute(ID) : "";
|
---|
985 | nodeID.setValue(docID + HYPHEN + sectionID);
|
---|
986 | docNode.setAttributeNode(nodeID);
|
---|
987 |
|
---|
988 | Attr nodeType = doc.createAttribute(GSXML.NODE_TYPE_ATT);
|
---|
989 | if(sectionID.equals("1")) { // root case
|
---|
990 | nodeType.setValue(GSXML.NODE_TYPE_ROOT);
|
---|
991 | // reset the attribute without the section number
|
---|
992 | docNode.setAttribute(GSXML.NODE_ID_ATT, docID);
|
---|
993 | }
|
---|
994 | else if(subSection.getElementsByTagName(SECTION_ELEMENT).getLength() > 0)
|
---|
995 | // this section has further <Section> children, so it's an internal node
|
---|
996 | nodeType.setValue(GSXML.NODE_TYPE_INTERNAL);
|
---|
997 | else if(subSection.hasAttribute(TYPE))
|
---|
998 | nodeType.setValue(GSXML.NODE_TYPE_INTERNAL);
|
---|
999 | else // leaf
|
---|
1000 | nodeType.setValue(GSXML.NODE_TYPE_LEAF);
|
---|
1001 | docNode.setAttributeNode(nodeType);
|
---|
1002 | return docNode;
|
---|
1003 | }
|
---|
1004 |
|
---|
1005 |
|
---|
1006 | /** Given an identifier that is either a docPID or a concatenation of
|
---|
1007 | * docPID+sectionID, this method works out the fedora assigned docPID and
|
---|
1008 | * sectionID and then calls getContentBody(docPID, sectionID) with those.
|
---|
1009 | * @param docID is expected to be of the form
|
---|
1010 | * "greenstone:<collectionName>-<docPID>-<sectionNumber>" or
|
---|
1011 | * "greenstone:<collectionName>-<docPID>"
|
---|
1012 | * If it is "greenstone:<collectionName>-<docPID>", then the content for
|
---|
1013 | * "greenstone:<collectionName>-1" ("greenstone:<collectionName>-Section1")
|
---|
1014 | * is returned! */
|
---|
1015 | public String getContent(String docID) {
|
---|
1016 | return this.getContent(new String[]{docID});
|
---|
1017 | }
|
---|
1018 |
|
---|
1019 | /** Given an identifier that is a concatenation of docID+sectionID, this
|
---|
1020 | * method works out the fedora assigned docPID and sectionID and then calls
|
---|
1021 | * getContentBody(docPID, sectionID) with those.
|
---|
1022 | * @param docIDs is an array of document identifiers of the form
|
---|
1023 | * "greenstone:<collectionName>-<docPID>-<sectionNumber>"
|
---|
1024 | * If it is "greenstone:<collectionName>-<docPID>", then the content for
|
---|
1025 | * "greenstone:<collectionName>-Section1" is returned! */
|
---|
1026 | public String getContent(String[] docIDs) {
|
---|
1027 | Document doc = builder.newDocument();
|
---|
1028 | FedoraGS3RunException ex = null;
|
---|
1029 |
|
---|
1030 | //<documentNodeList>
|
---|
1031 | Element docNodeList = doc.createElement(
|
---|
1032 | GSXML.DOC_NODE_ELEM+GSXML.LIST_MODIFIER);
|
---|
1033 |
|
---|
1034 | try{
|
---|
1035 | for(int i = 0; i < docIDs.length; i++) {
|
---|
1036 | // get the sectionID and docPID from the docID
|
---|
1037 | String sectionID = this.removePrefix(
|
---|
1038 | getSectionIDFromDocID(docIDs[i]), SECTION);
|
---|
1039 | String docPID = getDocPIDFromDocID(docIDs[i]);
|
---|
1040 | if(sectionID.equals("")) // if no section is specified, get
|
---|
1041 | sectionID = "1"; // get the content for Section id="1"
|
---|
1042 |
|
---|
1043 | // Get the contents for the requested section of document docPID
|
---|
1044 | String sectionContent = this.getContentBody(docPID, sectionID);
|
---|
1045 |
|
---|
1046 | // set the nodeID attribute
|
---|
1047 | Element docNode = doc.createElement(GSXML.DOC_NODE_ELEM);
|
---|
1048 | Attr nodeId = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
1049 |
|
---|
1050 | nodeId.setValue(docIDs[i]); // just set the docID which will contain
|
---|
1051 | // the docPID (and sectionID if already present)
|
---|
1052 |
|
---|
1053 | docNode.setAttributeNode(nodeId);
|
---|
1054 | // set the text content to what was retrieved
|
---|
1055 | Element nodeContent = doc.createElement(GSXML.NODE_CONTENT_ELEM);
|
---|
1056 | Text textNode = doc.createTextNode(sectionContent.trim());
|
---|
1057 |
|
---|
1058 | nodeContent.appendChild(textNode);
|
---|
1059 | docNode.appendChild(nodeContent);
|
---|
1060 | //add the documentNode to the docNodeList
|
---|
1061 | docNodeList.appendChild(docNode);
|
---|
1062 | }
|
---|
1063 | } catch(Exception e) {
|
---|
1064 | ex = new FedoraGS3RunException(e);
|
---|
1065 | ex.setSpecifics("requested doc Section datastream");
|
---|
1066 | }
|
---|
1067 | Element responseMsg = createResponseMessage(doc, docNodeList, ex,
|
---|
1068 | GSXML.REQUEST_TYPE_PROCESS, "DocumentContentRetrieve");
|
---|
1069 | try{
|
---|
1070 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
1071 | } catch(TransformerException e) {
|
---|
1072 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
1073 | + " " + e;
|
---|
1074 | }
|
---|
1075 | }
|
---|
1076 |
|
---|
1077 | /** Gets the contents of a textNode from a section.
|
---|
1078 | * @return the text content of a section.
|
---|
1079 | * @param docPID the pid of the document from which a section's text is to
|
---|
1080 | * be retrieved.
|
---|
1081 | * @param sectionID is the section identifier of the document denoted by
|
---|
1082 | * docPID whose text is to be returned.
|
---|
1083 | */
|
---|
1084 | protected String getContentBody(String docPID, String sectionID)
|
---|
1085 | throws RemoteException, UnsupportedEncodingException,
|
---|
1086 | SAXException, IOException
|
---|
1087 | {
|
---|
1088 | String section = this.getSection(docPID, sectionID);
|
---|
1089 |
|
---|
1090 | // the content is nested inside a <Section> element,
|
---|
1091 | // we extract it from there:
|
---|
1092 | InputSource source = new InputSource(new StringReader(section));
|
---|
1093 | Document doc = builder.parse(source);
|
---|
1094 |
|
---|
1095 | // The document Element is the <Section> we want.
|
---|
1096 | // Get its text contents:
|
---|
1097 | section = FedoraCommons.getValue(doc.getDocumentElement());
|
---|
1098 |
|
---|
1099 | // we are going to remove all occurrences of "_httpdocimg_/"
|
---|
1100 | // that precede associated filenames, because that's a GS3
|
---|
1101 | // defined macro for resolving relative urls. It won't help
|
---|
1102 | // with documents stored in fedora.
|
---|
1103 | section = section.replaceAll(GS3FilePathMacro+"/", "");
|
---|
1104 | return section;
|
---|
1105 | }
|
---|
1106 |
|
---|
1107 | /** Here we create the greenstone's response message element:
|
---|
1108 | * <message≶<response><content></response></message>
|
---|
1109 | * @return a greenstone response-message element.
|
---|
1110 | * @param doc - the Document object which should me used to create the
|
---|
1111 | * <message> and <response> elements
|
---|
1112 | * @param content - the element that is to be nested inside <response>
|
---|
1113 | * @param ex - any exception that occurred when trying to create
|
---|
1114 | * the content parameter
|
---|
1115 | * @param responseType - the value for the type attribute of <response>,
|
---|
1116 | * such as "describe", "retrieve", "browse", "query"...
|
---|
1117 | * @param originator - indiates the collectionName or service (like
|
---|
1118 | * DocumentContentRetrieve) from where this response message originates
|
---|
1119 | */
|
---|
1120 | protected Element createResponseMessage(Document doc, Element content,
|
---|
1121 | Exception ex, String responseType, String originator)
|
---|
1122 | {
|
---|
1123 | Element response = doc.createElement(GSXML.RESPONSE_ELEM);
|
---|
1124 | // from = "FedoraGS3"
|
---|
1125 | Attr attribute = doc.createAttribute(GSXML.FROM_ATT);
|
---|
1126 | String from = originator.equals("") ? FEDORA_GS3
|
---|
1127 | : FEDORA_GS3+"/"+originator;
|
---|
1128 |
|
---|
1129 | attribute.setValue(from);
|
---|
1130 | response.setAttributeNode(attribute);
|
---|
1131 |
|
---|
1132 | // type = "describe" or "process" - whatever's given in requestType:
|
---|
1133 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1134 | attribute.setValue(responseType);
|
---|
1135 | response.setAttributeNode(attribute);
|
---|
1136 |
|
---|
1137 | if(content != null)
|
---|
1138 | response.appendChild(content);
|
---|
1139 |
|
---|
1140 | // we'll create an error element for RemoteExceptions (web service problems)
|
---|
1141 | // and UnsupportedEncodingExceptions and
|
---|
1142 | if(ex != null) {
|
---|
1143 | Element error = doc.createElement(GSXML.ERROR_ELEM);
|
---|
1144 | error.appendChild(doc.createTextNode(ex.getMessage()));
|
---|
1145 | // now append the error to the <response> element (after
|
---|
1146 | // the content element whatever that was)
|
---|
1147 | response.appendChild(error);
|
---|
1148 | }
|
---|
1149 |
|
---|
1150 | Element message = doc.createElement(GSXML.MESSAGE_ELEM);
|
---|
1151 | message.appendChild(response);
|
---|
1152 | doc.appendChild(message);
|
---|
1153 | return message;
|
---|
1154 | }
|
---|
1155 |
|
---|
1156 | /** @return a <serviceList> Element as defined by GS3: containing all the
|
---|
1157 | * services (denoted by <service> elements) that are supported by FedoraGS3.
|
---|
1158 | * At present these are: DocumentContentRetrieve, DocumentMetadataRetrieve,
|
---|
1159 | * DocumentStructureRetrieve, TextQuery, FieldQuery, ClassifierBrowse,
|
---|
1160 | * ClassifierBrowseMetadataRetrieve (as indicated by member var serviceNames).
|
---|
1161 | * @param doc - the Document object which should me used to create the
|
---|
1162 | * <serviceList> element */
|
---|
1163 | protected Element createServiceList(Document doc)
|
---|
1164 | {
|
---|
1165 | Element serviceList = doc.createElement(
|
---|
1166 | GSXML.SERVICE_ELEM+GSXML.LIST_MODIFIER);
|
---|
1167 |
|
---|
1168 | for(int i = 0; i < serviceNames.length; i++) {
|
---|
1169 | // create the <service name="serviceName[i]" type="servicetype" />
|
---|
1170 | Element service = doc.createElement(GSXML.SERVICE_ELEM);
|
---|
1171 |
|
---|
1172 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1173 | attribute.setValue(serviceNames[i]);
|
---|
1174 | service.setAttributeNode(attribute);
|
---|
1175 |
|
---|
1176 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1177 | if(serviceNames[i].equals("ClassifierBrowse")) //browseTitlesByLetter
|
---|
1178 | attribute.setValue(GSXML.SERVICE_TYPE_BROWSE);
|
---|
1179 | else if(serviceNames[i].contains("Query")) // search services
|
---|
1180 | attribute.setValue(GSXML.SERVICE_TYPE_QUERY);
|
---|
1181 | else
|
---|
1182 | attribute.setValue(GSXML.SERVICE_TYPE_RETRIEVE);
|
---|
1183 | service.setAttributeNode(attribute);
|
---|
1184 |
|
---|
1185 | // add the service element to the serviceList element
|
---|
1186 | // <serviceList><service /></serviceList>
|
---|
1187 | serviceList.appendChild(service);
|
---|
1188 | }
|
---|
1189 | return serviceList;
|
---|
1190 | }
|
---|
1191 |
|
---|
1192 | /** @return a GS3 response message for a describe services request:
|
---|
1193 | * indicating the list of services supported by the Fedora-Greenstone
|
---|
1194 | * interface. These are DocumentContentRetrieve, DocumentMetadataRetrieve,
|
---|
1195 | * DocumentStructureRetrieve, ClassifierBrowse, TextQuery, FieldQuery,
|
---|
1196 | * ClassifierBrowseMetadataRetrieve - as indicated by member variable
|
---|
1197 | * serviceNames. */
|
---|
1198 | public String getServiceList()
|
---|
1199 | {
|
---|
1200 | Document doc = builder.newDocument();
|
---|
1201 | Element serviceList = createServiceList(doc);
|
---|
1202 | // make <serviceList> the body of the responseMessage:
|
---|
1203 | // <message><response><serviceList></response></message>
|
---|
1204 | Element responseMsg = createResponseMessage(doc, serviceList, null,
|
---|
1205 | GSXML.REQUEST_TYPE_DESCRIBE, "");
|
---|
1206 | try {
|
---|
1207 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
1208 | }catch(TransformerException e) {
|
---|
1209 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
1210 | + " " + e;
|
---|
1211 | }
|
---|
1212 | }
|
---|
1213 |
|
---|
1214 | /** @return a GS3 describe response message listing the collections and
|
---|
1215 | * collection-specific metadata stored in the Fedora-Greenstone repository. */
|
---|
1216 | public String getCollectionList()
|
---|
1217 | {
|
---|
1218 | Document doc = builder.newDocument();
|
---|
1219 | FedoraGS3RunException ex = null; // any RemoteException
|
---|
1220 |
|
---|
1221 | // create the <collectionList /> element
|
---|
1222 | Element collectionList = doc.createElement(
|
---|
1223 | GSXML.COLLECTION_ELEM+GSXML.LIST_MODIFIER);
|
---|
1224 | try{
|
---|
1225 | String[] collectionNames = this.getCollectionNames(
|
---|
1226 | this.getCollections()); // this line could throw RemoteException
|
---|
1227 | for(int i = 0; i < collectionNames.length; i++) {
|
---|
1228 | // create the <collection name="somename" /> element
|
---|
1229 | Element collection = doc.createElement(GSXML.COLLECTION_ELEM);
|
---|
1230 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1231 | attribute.setValue(collectionNames[i]);
|
---|
1232 | collection.setAttributeNode(attribute);
|
---|
1233 |
|
---|
1234 | // append the <collection> element as child of <collectionList>
|
---|
1235 | collectionList.appendChild(collection);
|
---|
1236 |
|
---|
1237 | //if(collection.hasAttribute(GSXML.NAME_ATT))
|
---|
1238 | //LOG.debug(collection.getAttribute(GSXML.NAME_ATT));
|
---|
1239 | }
|
---|
1240 | } catch(RemoteException e) { // if this happens, perhaps it's because it
|
---|
1241 | // can't find Greenstone collections in fedora repository?
|
---|
1242 | ex = new FedoraGS3RunException(e);
|
---|
1243 | ex.setSpecifics(
|
---|
1244 | "greenstone collections in fedora repository");
|
---|
1245 | }
|
---|
1246 |
|
---|
1247 | // make <collectionList> the body of the responseMessage:
|
---|
1248 | // <message><response><collectionList></response></message>
|
---|
1249 | Element responseMsg = createResponseMessage(doc, collectionList, ex,
|
---|
1250 | GSXML.REQUEST_TYPE_DESCRIBE, "");
|
---|
1251 | try{
|
---|
1252 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
1253 | }catch(TransformerException e) {
|
---|
1254 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
1255 | + " " + e;
|
---|
1256 | }
|
---|
1257 | }
|
---|
1258 |
|
---|
1259 | /** @return a GS3 describe response message for a collection in the
|
---|
1260 | * Fedora-Greenstone repository.
|
---|
1261 | * @param collectionName - the name of the collection that is to be described.
|
---|
1262 | * It will be converted to a fedora collection pid, which is of the form
|
---|
1263 | * "greenstone:<collectionName>-collection". */
|
---|
1264 | public String describeCollection(String collectionName)
|
---|
1265 | {
|
---|
1266 | Document doc = builder.newDocument();
|
---|
1267 | FedoraGS3RunException ex = null;
|
---|
1268 |
|
---|
1269 | Element collection = doc.createElement(GSXML.COLLECTION_ELEM);
|
---|
1270 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1271 | attribute.setValue(collectionName);
|
---|
1272 | collection.setAttributeNode(attribute);
|
---|
1273 |
|
---|
1274 | //<displayItem assigned="true" lang="en" name="name">
|
---|
1275 | //"some display name"</displayItem>
|
---|
1276 | Element displayItem = doc.createElement(GSXML.DISPLAY_TEXT_ELEM);
|
---|
1277 |
|
---|
1278 | attribute = doc.createAttribute(GSXML.LANG_ATT);
|
---|
1279 | attribute.setValue(this.lang);
|
---|
1280 | displayItem.setAttributeNode(attribute);
|
---|
1281 |
|
---|
1282 | attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1283 | attribute.setValue(GSXML.DISPLAY_TEXT_NAME);
|
---|
1284 | displayItem.setAttributeNode(attribute);
|
---|
1285 |
|
---|
1286 | try{
|
---|
1287 | Text textNode = doc.createTextNode(
|
---|
1288 | this.getCollectionTitle(getCollectionPID(collectionName)));
|
---|
1289 | displayItem.appendChild(textNode);
|
---|
1290 | } catch(Exception e) {
|
---|
1291 | // can't find Greenstone collections in fedora repository or problem
|
---|
1292 | // getting their titles from their metadata datastream?
|
---|
1293 | ex = new FedoraGS3RunException(e);
|
---|
1294 | ex.setSpecifics("greenstone collections or their metadata"
|
---|
1295 | + "in the fedora repository");
|
---|
1296 | }
|
---|
1297 | // now append the displayItem element as child of the collection element
|
---|
1298 | collection.appendChild(displayItem);
|
---|
1299 | // get the <serviceList> and add it into the collection description.
|
---|
1300 | // Services for all collections in the FedoraGS3 repository are the
|
---|
1301 | // same, offering a ClassifierBrowse to browse titles by starting letter
|
---|
1302 | // and DocRetrieve services: Content, Metadata and Structure.
|
---|
1303 |
|
---|
1304 | Element serviceList = createServiceList(doc);
|
---|
1305 | collection.appendChild(serviceList);
|
---|
1306 |
|
---|
1307 | Element responseMsg = createResponseMessage(doc, collection, ex,
|
---|
1308 | GSXML.REQUEST_TYPE_DESCRIBE, collectionName);
|
---|
1309 | try{
|
---|
1310 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
1311 | }catch(TransformerException e) {
|
---|
1312 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
1313 | + " " + e;
|
---|
1314 | }
|
---|
1315 | }
|
---|
1316 |
|
---|
1317 | /** @return a GS3 describe response message for the services of a collection
|
---|
1318 | * in the Fedora-Greenstone repository. So far, these services are the same for
|
---|
1319 | * all fedora collections: they are the services given in member variable
|
---|
1320 | * serviceNames: DocumentContent/Metadata/StructureRetrieve, ClassifierBrowse,
|
---|
1321 | * ClassifierBrowseMetadataRetrieve.
|
---|
1322 | * All collections in this Digital Library (Fedora Repository) share the
|
---|
1323 | * same services, so this method returns the same services as getServiceList();
|
---|
1324 | * @param collectionName - the name of the collection whose services are to
|
---|
1325 | * be described. It will be converted to a fedora collection pid, which is of
|
---|
1326 | * the form "greenstone:<collectionName>-collection". */
|
---|
1327 | public String describeCollectionServices(String collectionName)
|
---|
1328 | {
|
---|
1329 | Document doc = builder.newDocument();
|
---|
1330 |
|
---|
1331 | Element collection = doc.createElement(GSXML.COLLECTION_ELEM);
|
---|
1332 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1333 | attribute.setValue(collectionName);
|
---|
1334 | collection.setAttributeNode(attribute);
|
---|
1335 |
|
---|
1336 | Element serviceList = createServiceList(doc);
|
---|
1337 | collection.appendChild(serviceList);
|
---|
1338 |
|
---|
1339 | Element responseMsg = createResponseMessage(doc, collection, null,
|
---|
1340 | GSXML.REQUEST_TYPE_DESCRIBE, collectionName);
|
---|
1341 | try{
|
---|
1342 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
1343 | }catch(TransformerException e) {
|
---|
1344 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
1345 | + " " + e;
|
---|
1346 | }
|
---|
1347 | }
|
---|
1348 |
|
---|
1349 | /** All collections in this Digital Library (Fedora Repository) share
|
---|
1350 | * the same services, so this method returns the same as
|
---|
1351 | * describeCollectionService(collName, serviceName).
|
---|
1352 | * @return a GS3 describe response message for the requested service
|
---|
1353 | * of the given collection. DocumentContent/Metadata/StructureRetrieve
|
---|
1354 | * return nothing special except their names; browse (and any query)
|
---|
1355 | * return more complex XML responses.
|
---|
1356 | * @param serviceName - the name of the service in the collection which is to
|
---|
1357 | * be described.*/
|
---|
1358 | public String describeService(String serviceName)
|
---|
1359 | {
|
---|
1360 | // For all the *retrieve* services (incl ClassifierBrowseMetadataRetrieve)
|
---|
1361 | // we return:
|
---|
1362 | // <message><response from="<name>Retrieve" type="describe">
|
---|
1363 | // <service name="<name>Retrieve" type="retrieve" /></response></message>
|
---|
1364 | // But for browse (and any query) service, we return the data necessary
|
---|
1365 | // for displaying it
|
---|
1366 |
|
---|
1367 | Document doc = this.builder.newDocument();
|
---|
1368 | Element service = doc.createElement(GSXML.SERVICE_ELEM);
|
---|
1369 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1370 | attribute.setValue(serviceName);
|
---|
1371 | service.setAttributeNode(attribute);
|
---|
1372 |
|
---|
1373 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1374 |
|
---|
1375 | if(serviceName.toLowerCase().endsWith("retrieve")) {
|
---|
1376 | attribute.setValue(GSXML.SERVICE_TYPE_RETRIEVE);
|
---|
1377 | }
|
---|
1378 | else if(serviceName.toLowerCase().contains("browse")) {
|
---|
1379 | attribute.setValue(GSXML.SERVICE_TYPE_BROWSE);
|
---|
1380 |
|
---|
1381 | // we need name and description <displayItem> elements
|
---|
1382 | Element displayItem
|
---|
1383 | = createNameValuePairElement(doc,
|
---|
1384 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME, "Browse");
|
---|
1385 | service.appendChild(displayItem);
|
---|
1386 |
|
---|
1387 | displayItem = createNameValuePairElement(doc,
|
---|
1388 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_DESCRIPTION,
|
---|
1389 | "Browse pre-defined classification hierarchies");
|
---|
1390 | service.appendChild(displayItem);
|
---|
1391 |
|
---|
1392 | // now need a classifierList
|
---|
1393 | Element classifierList = doc.createElement(
|
---|
1394 | GSXML.CLASSIFIER_ELEM+GSXML.LIST_MODIFIER);
|
---|
1395 |
|
---|
1396 | int classifierNum = 1;
|
---|
1397 | // append a <classifier content="some letter" name="CL#">
|
---|
1398 | // for each letter of the alphabet:
|
---|
1399 | Element classifier = createClassifierElement(doc, "TitleByLetter",
|
---|
1400 | classifierNum++, "titles by letter", "Browse titles by letter");
|
---|
1401 | // now add this <classifier> to the <classifierList>
|
---|
1402 | classifierList.appendChild(classifier);
|
---|
1403 |
|
---|
1404 | // ANY MORE CLASSIFIERS? ADD THEM HERE
|
---|
1405 |
|
---|
1406 | service.appendChild(classifierList);
|
---|
1407 | } // ELSE check for whether it is a query service
|
---|
1408 | else if(serviceName.toLowerCase().contains("query")) {
|
---|
1409 | attribute.setValue(GSXML.SERVICE_TYPE_QUERY);
|
---|
1410 | if(serviceName.equals("TextQuery")) {
|
---|
1411 | describeTextQueryService(service);
|
---|
1412 | } else if(serviceName.equals("FieldQuery")) {
|
---|
1413 | describeFieldQueryService(service);
|
---|
1414 | }
|
---|
1415 | }
|
---|
1416 |
|
---|
1417 | // don't forget to add the type attribute to the service!
|
---|
1418 | service.setAttributeNode(attribute);
|
---|
1419 |
|
---|
1420 | String from = serviceName;
|
---|
1421 |
|
---|
1422 | Element responseMsg = createResponseMessage(doc, service, null,
|
---|
1423 | GSXML.REQUEST_TYPE_DESCRIBE, from);
|
---|
1424 | try{
|
---|
1425 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
1426 | }catch(TransformerException e) {
|
---|
1427 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
1428 | + " " + e;
|
---|
1429 | }
|
---|
1430 | }
|
---|
1431 |
|
---|
1432 | /** Appends children to the parameter service Element that make the
|
---|
1433 | * final service Element into a describe response XML for FedoraGS3's
|
---|
1434 | * TextQuery service.
|
---|
1435 | * @param service is the service Element that is being filled out. */
|
---|
1436 | protected void describeTextQueryService(Element service) {
|
---|
1437 | Document doc = service.getOwnerDocument();
|
---|
1438 | // we need name, submit (button) and description <displayItem> elements
|
---|
1439 | Element displayItem = createNameValuePairElement(doc,
|
---|
1440 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME,
|
---|
1441 | "Text Search");
|
---|
1442 | service.appendChild(displayItem);
|
---|
1443 |
|
---|
1444 | displayItem = createNameValuePairElement(doc,
|
---|
1445 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_SUBMIT, "Search");
|
---|
1446 | service.appendChild(displayItem);
|
---|
1447 |
|
---|
1448 | displayItem = createNameValuePairElement(doc,
|
---|
1449 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_DESCRIPTION,
|
---|
1450 | "Title and full-text search service");
|
---|
1451 | service.appendChild(displayItem);
|
---|
1452 |
|
---|
1453 | //create the <paramList>
|
---|
1454 | Element paramList = doc.createElement(
|
---|
1455 | GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
|
---|
1456 |
|
---|
1457 | // we ignore granularity to search at: it will always be
|
---|
1458 | // document and section level
|
---|
1459 | // we ignore casefolding: always on (that is, case is irrelevant)
|
---|
1460 | // we ignore document display order: always ranked
|
---|
1461 |
|
---|
1462 | // Constructing the following:
|
---|
1463 | // <param default="100" name="maxDocs" type="integer">
|
---|
1464 | // <displayItem name="name">Maximum hits to return</displayItem>
|
---|
1465 | // </param>
|
---|
1466 | Element param = doc.createElement(GSXML.PARAM_ELEM);
|
---|
1467 |
|
---|
1468 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1469 | attribute.setValue(MAXDOCS);
|
---|
1470 | param.setAttributeNode(attribute);
|
---|
1471 |
|
---|
1472 | attribute = doc.createAttribute(GSXML.DEFAULT_ATT);
|
---|
1473 | attribute.setValue("100");
|
---|
1474 | param.setAttributeNode(attribute);
|
---|
1475 |
|
---|
1476 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1477 | attribute.setValue(GSXML.PARAM_TYPE_INTEGER);
|
---|
1478 | param.setAttributeNode(attribute);
|
---|
1479 |
|
---|
1480 | displayItem = createNameValuePairElement(doc,
|
---|
1481 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME,
|
---|
1482 | "Maximum hits to return");
|
---|
1483 | param.appendChild(displayItem);
|
---|
1484 |
|
---|
1485 | paramList.appendChild(param);
|
---|
1486 |
|
---|
1487 | // Constructing the following:
|
---|
1488 | // <param name="query" type="string">
|
---|
1489 | // <displayItem name="name">Query string</displayItem>
|
---|
1490 | // </param>
|
---|
1491 | param = doc.createElement(GSXML.PARAM_ELEM);
|
---|
1492 |
|
---|
1493 | attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1494 | attribute.setValue(QUERY);
|
---|
1495 | param.setAttributeNode(attribute);
|
---|
1496 |
|
---|
1497 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1498 | attribute.setValue(GSXML.PARAM_TYPE_STRING);
|
---|
1499 | param.setAttributeNode(attribute);
|
---|
1500 |
|
---|
1501 | displayItem = createNameValuePairElement(doc,
|
---|
1502 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME,
|
---|
1503 | "Query string");
|
---|
1504 | param.appendChild(displayItem);
|
---|
1505 |
|
---|
1506 | paramList.appendChild(param);
|
---|
1507 |
|
---|
1508 | service.appendChild(paramList);
|
---|
1509 | }
|
---|
1510 |
|
---|
1511 | /** Appends children to the parameter service Element that make the
|
---|
1512 | * final service Element into a describe response XML for FedoraGS3's
|
---|
1513 | * FieldQuery service.
|
---|
1514 | * @param service is the service Element that is being filled out. */
|
---|
1515 | protected void describeFieldQueryService(Element service) {
|
---|
1516 | Document doc = service.getOwnerDocument();
|
---|
1517 | // we need name, submit (button) and description <displayItem> elements
|
---|
1518 | Element displayItem = createNameValuePairElement(doc,
|
---|
1519 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME,
|
---|
1520 | "Form Search");
|
---|
1521 | service.appendChild(displayItem);
|
---|
1522 |
|
---|
1523 | displayItem = createNameValuePairElement(doc,
|
---|
1524 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_SUBMIT, "Search");
|
---|
1525 | service.appendChild(displayItem);
|
---|
1526 |
|
---|
1527 | displayItem = createNameValuePairElement(doc,
|
---|
1528 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_DESCRIPTION,
|
---|
1529 | "Simple fielded search");
|
---|
1530 | service.appendChild(displayItem);
|
---|
1531 |
|
---|
1532 | //create the <paramList>
|
---|
1533 | Element paramList = doc.createElement(
|
---|
1534 | GSXML.PARAM_ELEM+GSXML.LIST_MODIFIER);
|
---|
1535 |
|
---|
1536 | // we ignore granularity to search at: it will always be
|
---|
1537 | // document and section level
|
---|
1538 | // we ignore casefolding: always on (that is, case is irrelevant)
|
---|
1539 | // we ignore document display order: always ranked
|
---|
1540 |
|
---|
1541 | // Constructing the following:
|
---|
1542 | // <param default="100" name="maxDocs" type="integer">
|
---|
1543 | // <displayItem name="name">Maximum hits to return</displayItem>
|
---|
1544 | // </param>
|
---|
1545 | Element param = doc.createElement(GSXML.PARAM_ELEM);
|
---|
1546 |
|
---|
1547 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1548 | attribute.setValue(MAXDOCS);
|
---|
1549 | param.setAttributeNode(attribute);
|
---|
1550 |
|
---|
1551 | attribute = doc.createAttribute(GSXML.DEFAULT_ATT);
|
---|
1552 | attribute.setValue("100");
|
---|
1553 | param.setAttributeNode(attribute);
|
---|
1554 |
|
---|
1555 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1556 | attribute.setValue(GSXML.PARAM_TYPE_INTEGER);
|
---|
1557 | param.setAttributeNode(attribute);
|
---|
1558 |
|
---|
1559 | displayItem = createNameValuePairElement(doc,
|
---|
1560 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME,
|
---|
1561 | "Maximum hits to return");
|
---|
1562 | param.appendChild(displayItem);
|
---|
1563 |
|
---|
1564 | paramList.appendChild(param);
|
---|
1565 |
|
---|
1566 | // Constructing the following:
|
---|
1567 | // <param name="simpleField" occurs="4" type="multi">
|
---|
1568 | // <displayItem name="name"></displayItem>
|
---|
1569 | //
|
---|
1570 | // <param name="query" type="string">
|
---|
1571 | // <displayItem name="name">Word or phrase </displayItem>
|
---|
1572 | // </param>
|
---|
1573 | //
|
---|
1574 | // <param default="allFields" name="fieldname" type="enum_single">
|
---|
1575 | // <displayItem name="name">in field</displayItem>
|
---|
1576 | //
|
---|
1577 | // <option name="docTitles">
|
---|
1578 | // <displayItem name="name">document titles</displayItem>
|
---|
1579 | // </option>
|
---|
1580 | // <option name="allTitles">
|
---|
1581 | // <displayItem name="name">document and section titles</displayItem>
|
---|
1582 | // </option>
|
---|
1583 | // <option name="fullText">
|
---|
1584 | // <displayItem name="name">full text</displayItem>
|
---|
1585 | // </option>
|
---|
1586 | // <option name="all">
|
---|
1587 | // <displayItem name="name">titles and full text</displayItem>
|
---|
1588 | // </option>
|
---|
1589 | // <option name="">
|
---|
1590 | // <displayItem name="name"></displayItem>
|
---|
1591 | // </option>
|
---|
1592 | // </param>
|
---|
1593 | // </param>
|
---|
1594 | Element rowOfParams = doc.createElement(GSXML.PARAM_ELEM);
|
---|
1595 | attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1596 | attribute.setValue(SIMPLEFIELD_ATT);
|
---|
1597 | rowOfParams.setAttributeNode(attribute);
|
---|
1598 |
|
---|
1599 | // we want the row of controls to occur multiple times
|
---|
1600 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1601 | attribute.setValue(GSXML.PARAM_TYPE_MULTI);
|
---|
1602 | rowOfParams.setAttributeNode(attribute);
|
---|
1603 |
|
---|
1604 | attribute = doc.createAttribute(OCCURS_ATT);
|
---|
1605 | attribute.setValue("4"); // we want this row to occur 4 times
|
---|
1606 | rowOfParams.setAttributeNode(attribute);
|
---|
1607 |
|
---|
1608 | // <param name="query" type="string">
|
---|
1609 | // <displayItem name="name">Word or phrase </displayItem>
|
---|
1610 | // </param>
|
---|
1611 | param = doc.createElement(GSXML.PARAM_ELEM);
|
---|
1612 |
|
---|
1613 | attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1614 | attribute.setValue(QUERY);
|
---|
1615 | param.setAttributeNode(attribute);
|
---|
1616 |
|
---|
1617 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1618 | attribute.setValue(GSXML.PARAM_TYPE_STRING);
|
---|
1619 | param.setAttributeNode(attribute);
|
---|
1620 |
|
---|
1621 | displayItem = createNameValuePairElement(doc,
|
---|
1622 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME,
|
---|
1623 | "Word or phrase");
|
---|
1624 | param.appendChild(displayItem);
|
---|
1625 | rowOfParams.appendChild(param);
|
---|
1626 |
|
---|
1627 | // <param default="allFields" name="fieldName" type="enum_single">
|
---|
1628 | // <displayItem name="name">in field</displayItem>
|
---|
1629 | param = doc.createElement(GSXML.PARAM_ELEM);
|
---|
1630 | attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1631 | attribute.setValue(FIELDNAME_ATT);
|
---|
1632 | param.setAttributeNode(attribute);
|
---|
1633 |
|
---|
1634 | attribute = doc.createAttribute(GSXML.TYPE_ATT);
|
---|
1635 | attribute.setValue(GSXML.PARAM_TYPE_ENUM_SINGLE);
|
---|
1636 | param.setAttributeNode(attribute);
|
---|
1637 |
|
---|
1638 | attribute = doc.createAttribute(GSXML.DEFAULT_ATT);
|
---|
1639 | attribute.setValue(ALL_FIELDS);
|
---|
1640 | param.setAttributeNode(attribute);
|
---|
1641 |
|
---|
1642 | displayItem = createNameValuePairElement(doc,
|
---|
1643 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME,
|
---|
1644 | "in field");
|
---|
1645 | param.appendChild(displayItem);
|
---|
1646 |
|
---|
1647 | String[] searchFieldNames
|
---|
1648 | = {ALL_FIELDS, DOC_TITLES, ALL_TITLES, FULLTEXT};
|
---|
1649 | String[] searchFieldDisplay = {"all titles and full-text",
|
---|
1650 | "document titles only", "document and section titles",
|
---|
1651 | "full-text only"};
|
---|
1652 |
|
---|
1653 | // for each fieldName create an option element and insert
|
---|
1654 | // the option into the enum_multi drop-down param:
|
---|
1655 | // <option name="fieldName">
|
---|
1656 | // <displayItem name="name">fieldName</displayItem>
|
---|
1657 | // </option>
|
---|
1658 | for(int i = 0; i < searchFieldNames.length; i++) {
|
---|
1659 | Element option = doc.createElement(GSXML.PARAM_OPTION_ELEM);
|
---|
1660 | attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1661 | attribute.setValue(searchFieldNames[i]);
|
---|
1662 | option.setAttributeNode(attribute);
|
---|
1663 |
|
---|
1664 | displayItem = createNameValuePairElement(doc,
|
---|
1665 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME,
|
---|
1666 | searchFieldDisplay[i]);
|
---|
1667 | option.appendChild(displayItem);
|
---|
1668 | param.appendChild(option); // add option to the drop-down box
|
---|
1669 | }
|
---|
1670 |
|
---|
1671 | rowOfParams.appendChild(param);
|
---|
1672 | paramList.appendChild(rowOfParams);
|
---|
1673 | service.appendChild(paramList);
|
---|
1674 | }
|
---|
1675 |
|
---|
1676 | /**
|
---|
1677 | * @return a GS3 describe response message for the requested service
|
---|
1678 | * of the given collection. DocumentContent/Metadata/StructureRetrieve
|
---|
1679 | * return nothing special except their names; browse (and any query)
|
---|
1680 | * return more complex XML responses.
|
---|
1681 | * All collections in this Digital Library (Fedora Repository) share
|
---|
1682 | * the same services, so this method returns the same as
|
---|
1683 | * describeService(serviceName).
|
---|
1684 | * @param collectionName - the name of the collection whose service is to
|
---|
1685 | * be described. It will be converted to a fedora collection pid, which is of
|
---|
1686 | * the form "greenstone:<collectionName>-collection".
|
---|
1687 | * @param serviceName - the name of the service in the collection which is to
|
---|
1688 | * be described. */
|
---|
1689 | public String describeCollectionService(String collectionName,
|
---|
1690 | String serviceName) {
|
---|
1691 | // collectionName can be ignored, because all services are FedoraGS3
|
---|
1692 | // services and are not unique to any particular (greenstone) collection.
|
---|
1693 | return describeService(serviceName);
|
---|
1694 | }
|
---|
1695 |
|
---|
1696 | /** This method performs the implemented browse operation: allowing the
|
---|
1697 | * user to browse the titles of documents in the given collection by letter
|
---|
1698 | * and returning the results.
|
---|
1699 | * @param classifierIDs are the ids of the classifiers on which to browse. In
|
---|
1700 | * this case, the classifier indicates whether we browse titles by letter, or
|
---|
1701 | * browse (documents) by collection; and it is of the form <CL(letter)>.
|
---|
1702 | * @param collectionName is the name of the collection whose documents
|
---|
1703 | * starting with the given letter will be returned.
|
---|
1704 | * @return a GS3 DocumentStructureRetrieve response message which lists all
|
---|
1705 | * the documents that start with the letter indicated by parameter classifier.
|
---|
1706 | */
|
---|
1707 | public String browse(String collectionName, String[] classifierIDs)
|
---|
1708 | {
|
---|
1709 | Document doc = builder.newDocument();
|
---|
1710 | FedoraGS3RunException ex = null; //any RemoteException or UnsupportedEncodingException
|
---|
1711 |
|
---|
1712 | // <classifierNodeList>
|
---|
1713 | Element classifierNodeList = doc.createElement(
|
---|
1714 | GSXML.CLASS_NODE_ELEM+GSXML.LIST_MODIFIER);
|
---|
1715 |
|
---|
1716 | for(int i = 0; i < classifierIDs.length; i++) {
|
---|
1717 | // <classifierNode nodeID="classifierNum">
|
---|
1718 | Element requestedClassifierNode = doc.createElement(
|
---|
1719 | GSXML.CLASS_NODE_ELEM);
|
---|
1720 | Attr attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
1721 | attribute.setValue(classifierIDs[i]);
|
---|
1722 | requestedClassifierNode.setAttributeNode(attribute);
|
---|
1723 | classifierNodeList.appendChild(requestedClassifierNode);
|
---|
1724 |
|
---|
1725 | // <nodeStructure>
|
---|
1726 | Element nodeStructure = doc.createElement(GSXML.NODE_STRUCTURE_ELEM);
|
---|
1727 | requestedClassifierNode.appendChild(nodeStructure);
|
---|
1728 |
|
---|
1729 | // And one more time, the top level classifierNode:
|
---|
1730 | Element classifierNode = doc.createElement(GSXML.CLASS_NODE_ELEM);
|
---|
1731 | attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
1732 | attribute.setValue(classifierIDs[i]);
|
---|
1733 | classifierNode.setAttributeNode(attribute);
|
---|
1734 | nodeStructure.appendChild(classifierNode);
|
---|
1735 |
|
---|
1736 | // Work out what we're browsing base on the classifierID's number
|
---|
1737 | // classifier CL1 = browse titles by letter;
|
---|
1738 | // classifier CL2 = browse by collection;
|
---|
1739 | //remove the CL prefix and obtain the number from the id:
|
---|
1740 | int classifierNum = Integer.parseInt(classifierIDs[i].replace("CL", ""));
|
---|
1741 | switch(classifierNum) {
|
---|
1742 | case 1:
|
---|
1743 | // we're going to loop to the end of the alphabet
|
---|
1744 | int num = 1;
|
---|
1745 | for(char ch = 'A'; ch <= 'Z'; ch++, num++) {
|
---|
1746 | // Retrieve the document structure for each subClassifierID:
|
---|
1747 | // all the documents that begin with its letter.
|
---|
1748 | String letter = String.valueOf(ch);
|
---|
1749 | try {
|
---|
1750 | String[] docPIDs = this.browseTitlesByLetter(
|
---|
1751 | collectionName, letter);
|
---|
1752 | if(docPIDs.length == 0) {
|
---|
1753 | continue; // skip letters that don't have any kids
|
---|
1754 | }
|
---|
1755 |
|
---|
1756 | // <classifierNode nodeID="CL3.1">
|
---|
1757 | Element subClassifier = doc.createElement(
|
---|
1758 | GSXML.CLASS_NODE_ELEM);
|
---|
1759 | attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
1760 | attribute.setValue(classifierIDs[i]+"."+num);
|
---|
1761 | subClassifier.setAttributeNode(attribute);
|
---|
1762 | classifierNode.appendChild(subClassifier);
|
---|
1763 |
|
---|
1764 | // append the <docNodes> for the docPIDs found as children
|
---|
1765 | // of subclassifier
|
---|
1766 | getStructureElement(subClassifier, docPIDs, DESCENDANTS);
|
---|
1767 | //CHILDREN); // for testing
|
---|
1768 | } catch(Exception e) {
|
---|
1769 | ex = new FedoraGS3RunException(e);
|
---|
1770 | ex.setSpecifics("requested portion of TOC file or "
|
---|
1771 | + "trouble with fielded search ");
|
---|
1772 | }
|
---|
1773 | }
|
---|
1774 | // No titles in this collection that start with a letter at all
|
---|
1775 | if(!classifierNode.hasChildNodes()) {
|
---|
1776 | // <classifierNode nodeID="CL1.0"> which we will equate with A-Z
|
---|
1777 | Element subClassifier = doc.createElement(
|
---|
1778 | GSXML.CLASS_NODE_ELEM);
|
---|
1779 | attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
1780 | attribute.setValue(classifierIDs[i]+"."+0); //
|
---|
1781 | subClassifier.setAttributeNode(attribute);
|
---|
1782 | classifierNode.appendChild(subClassifier);
|
---|
1783 | }
|
---|
1784 | break;
|
---|
1785 | case 2:
|
---|
1786 | break;
|
---|
1787 | default:
|
---|
1788 | ex = new FedoraGS3RunException( // cause is regular exception
|
---|
1789 | new Exception("Unknown classifier ID: " + classifierIDs[i]));
|
---|
1790 | }
|
---|
1791 | }
|
---|
1792 | Element responseMsg = createResponseMessage(doc, classifierNodeList, ex,
|
---|
1793 | GSXML.REQUEST_TYPE_DESCRIBE, collectionName+"/ClassifierBrowse");
|
---|
1794 | try{
|
---|
1795 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
1796 | }catch(TransformerException e) {
|
---|
1797 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
1798 | + " " + e;
|
---|
1799 | }
|
---|
1800 | }
|
---|
1801 |
|
---|
1802 | /** This method performs something equivalent to a greenstone3
|
---|
1803 | * ClassifierBrowseMetadataRetrieve on the classifierNodeIDs
|
---|
1804 | * @param classNodeIDs array of classifierNode IDs of for which the metadata
|
---|
1805 | * needs to be returned.
|
---|
1806 | * @return a GS3 ClassifierBrowseMetadataRetrieve response message which
|
---|
1807 | * lists the metadata for all the classifierNodes passed as parameter.*/
|
---|
1808 | public String browseMetadataRetrieve(String[] classNodeIDs)
|
---|
1809 | {
|
---|
1810 | Document doc = this.builder.newDocument();
|
---|
1811 | // <classifierNodeList>
|
---|
1812 | Element classifierNodeList = doc.createElement(
|
---|
1813 | GSXML.CLASS_NODE_ELEM+GSXML.LIST_MODIFIER);
|
---|
1814 |
|
---|
1815 | // create <classifierNode><metadataList><metadata>s
|
---|
1816 | // </metadataList></classifierNode> for all letters of alphabet
|
---|
1817 | for(int i = 0; i < classNodeIDs.length; i++) {
|
---|
1818 | // strip ID of everything before the first '.' (i.e. remove "CL#.")
|
---|
1819 | int index = classNodeIDs[i].indexOf('.');
|
---|
1820 | String subClassifierNumber = classNodeIDs[i].substring(index+1);
|
---|
1821 | int subClassifierNum = Integer.parseInt(subClassifierNumber);
|
---|
1822 | String classifierName = "";
|
---|
1823 | if(subClassifierNum == 0) { // no document titles started with a letter
|
---|
1824 | classifierName = "A-Z";
|
---|
1825 | } else {
|
---|
1826 | char letter = (char)('A' + subClassifierNum - 1); // A = 1
|
---|
1827 | classifierName = String.valueOf(letter);
|
---|
1828 | }
|
---|
1829 |
|
---|
1830 | // <classifierNode nodeID="CL#.subNum">
|
---|
1831 | Element classifierNode = doc.createElement(GSXML.CLASS_NODE_ELEM);
|
---|
1832 | Attr attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
1833 | attribute.setValue(classNodeIDs[i]);
|
---|
1834 | classifierNode.setAttributeNode(attribute);
|
---|
1835 |
|
---|
1836 | // <metadataList>
|
---|
1837 | Element metadataList = doc.createElement(
|
---|
1838 | GSXML.METADATA_ELEM+GSXML.LIST_MODIFIER);
|
---|
1839 |
|
---|
1840 | // at least one metadata element: that of the title of this
|
---|
1841 | // classifierNode:
|
---|
1842 | // <metadata name="Title">letter</metadata>
|
---|
1843 | Element metadata = this.createNameValuePairElement(doc,
|
---|
1844 | GSXML.METADATA_ELEM, "Title", classifierName);
|
---|
1845 |
|
---|
1846 | // now connect up everything
|
---|
1847 | metadataList.appendChild(metadata);
|
---|
1848 | classifierNode.appendChild(metadataList);
|
---|
1849 | classifierNodeList.appendChild(classifierNode);
|
---|
1850 | }
|
---|
1851 |
|
---|
1852 | Element responseMsg = createResponseMessage(doc, classifierNodeList, null,
|
---|
1853 | GSXML.REQUEST_TYPE_PROCESS, //collName +
|
---|
1854 | "ClassifierBrowseMetadataRetrieve");
|
---|
1855 | try{
|
---|
1856 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
1857 | }catch(TransformerException e) {
|
---|
1858 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
1859 | + " " + e;
|
---|
1860 | }
|
---|
1861 | }
|
---|
1862 |
|
---|
1863 | /** @return a newly created element of the following format:
|
---|
1864 | * <classifier content="somecontent" name="CL+num">
|
---|
1865 | * <displayItem name="name">someClassifierName</displayItem>
|
---|
1866 | * <displayItem name="description">Browse by classifier name</displayItem>
|
---|
1867 | * </classifier>
|
---|
1868 | * @param doc - the document used to create the element
|
---|
1869 | * @param content - value of the content attribute
|
---|
1870 | * @param classifierNum - the number suffixed to the CL, together forming
|
---|
1871 | * the classifier Node's ID
|
---|
1872 | * @param displayNameVal is the bodytext of a named displayItem element
|
---|
1873 | * @param displayDescrVal is the bodytext of a displayItem element with
|
---|
1874 | * description */
|
---|
1875 | protected Element createClassifierElement(Document doc, String content,
|
---|
1876 | int classifierNum, String displayNameVal, String displayDescrVal)
|
---|
1877 | {
|
---|
1878 | final String CL = "CL";
|
---|
1879 | Element classifier = doc.createElement(GSXML.CLASSIFIER_ELEM);
|
---|
1880 | // content attribute
|
---|
1881 | Attr att = doc.createAttribute(GSXML.CLASSIFIER_CONTENT_ATT);
|
---|
1882 | att.setValue(content);
|
---|
1883 | classifier.setAttributeNode(att);
|
---|
1884 | // name attribute
|
---|
1885 | att = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1886 | att.setValue(CL + classifierNum);
|
---|
1887 | classifier.setAttributeNode(att);
|
---|
1888 |
|
---|
1889 | // now create the displayItem children for classifier:
|
---|
1890 | // <displayItem name="name">#letter</displayItem>
|
---|
1891 | // <displayItem name="description">
|
---|
1892 | //Browse titles starting with #letter</displayItem>
|
---|
1893 | Element displayItem = createNameValuePairElement(doc,
|
---|
1894 | GSXML.DISPLAY_TEXT_ELEM, GSXML.DISPLAY_TEXT_NAME, displayNameVal);
|
---|
1895 | classifier.appendChild(displayItem);
|
---|
1896 | displayItem = createNameValuePairElement(doc, GSXML.DISPLAY_TEXT_ELEM,
|
---|
1897 | GSXML.DISPLAY_TEXT_DESCRIPTION, displayDescrVal);
|
---|
1898 | classifier.appendChild(displayItem);
|
---|
1899 |
|
---|
1900 | return classifier;
|
---|
1901 | }
|
---|
1902 |
|
---|
1903 |
|
---|
1904 | /** @return a newly created element of the following format:
|
---|
1905 | * <elementName name="somename">"some display value"</elementName>
|
---|
1906 | * @param doc - the document used to create the element
|
---|
1907 | * @param elementName - the tag name
|
---|
1908 | * @param name - value of attribute name
|
---|
1909 | * @param value - the body text of the element */
|
---|
1910 | protected Element createNameValuePairElement(Document doc, String elementName,
|
---|
1911 | String name, String value) {
|
---|
1912 | // <elementName name="somename">"some display value"</elementName>
|
---|
1913 | Element element = doc.createElement(elementName);
|
---|
1914 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
1915 | attribute.setValue(name);
|
---|
1916 | element.setAttributeNode(attribute);
|
---|
1917 |
|
---|
1918 | element.appendChild(doc.createTextNode(value));
|
---|
1919 | return element;
|
---|
1920 | }
|
---|
1921 |
|
---|
1922 | /**
|
---|
1923 | * @param collection is the collection to search in
|
---|
1924 | * @param query is the query term to search for. It won't specify the
|
---|
1925 | * indexed field to search in, which will mean that GSearch will
|
---|
1926 | * search all default indexed fields.
|
---|
1927 | * @param maxDocs is the maximum number of results to return (which
|
---|
1928 | * at present we consider equivalent to FedoraGSearch's hitpageSize).
|
---|
1929 | */
|
---|
1930 | public String[] textQuery(String collection, String query,
|
---|
1931 | int maxDocs)
|
---|
1932 | throws Exception
|
---|
1933 | {
|
---|
1934 | // no need to search there is no query or query is empty spaces
|
---|
1935 | if(query.trim().equals(""))
|
---|
1936 | return new String[]{};
|
---|
1937 |
|
---|
1938 | // QUERY value won't specify indexed field to search, Fedora
|
---|
1939 | // Gsearch will take that as meaning all default indexed fields.
|
---|
1940 | // Params to search() method below: string of fielded query terms;
|
---|
1941 | // hitpageStart, hitpageEnd, snippetsMax (leave that 0)
|
---|
1942 | query = query + " " + "PID" + COLON + GREENSTONE;
|
---|
1943 |
|
---|
1944 | String searchResult = this.fedoraGSearch.search(query, 1, maxDocs, 0);
|
---|
1945 | // now we have the XML returned by FedoraGSearch, get the pids
|
---|
1946 | // of the documents returned (if any)
|
---|
1947 | String[] pids = this.fedoraGSearch.getPIDsFromSearchResult(
|
---|
1948 | collection, searchResult);
|
---|
1949 | return pids;
|
---|
1950 | }
|
---|
1951 |
|
---|
1952 | /**
|
---|
1953 | * This method performs a fieldquery, searching for x number of phrases
|
---|
1954 | * in each of the 4 indexed fields.
|
---|
1955 | * @param collection is the collection to search in
|
---|
1956 | * @param nameValParamsMap is a Map of several(key, value) entries,
|
---|
1957 | * 4 of which we're concerned with here:
|
---|
1958 | * - the keys are ALL_FIELDS, DOC_TITLES, ALL_TITLES, FULLTEXT
|
---|
1959 | * - the values are a comma separated list of terms (phrases or single
|
---|
1960 | * words) to search that field in. There may be more than 1 or
|
---|
1961 | * there may be none (in which case there may be N empty values or
|
---|
1962 | * spaces separated by commas).
|
---|
1963 | * @param maxDocs is the maximum number of results to return (which
|
---|
1964 | * at present we consider equivalent to FedoraGSearch's hitpageSize).
|
---|
1965 | * */
|
---|
1966 | public String[] fieldQuery(String collection, Map nameValParamsMap,
|
---|
1967 | int maxDocs)
|
---|
1968 | throws Exception
|
---|
1969 | {
|
---|
1970 | // we're going to maintain a list of UNIQUE pids that were returned
|
---|
1971 | // in search results. Hence we use Set:
|
---|
1972 | java.util.Set set = new java.util.HashSet();
|
---|
1973 |
|
---|
1974 | // (1) Use Fedora's search to search document titles, if they were
|
---|
1975 | // specified:
|
---|
1976 | String[] docTitlepids = {};
|
---|
1977 |
|
---|
1978 | String docTitleTerms = (String)nameValParamsMap.get(DOC_TITLES);
|
---|
1979 | if(docTitleTerms != null) { // no doc titles may have been specified
|
---|
1980 | String[] phrases = docTitleTerms.split(COMMA);
|
---|
1981 |
|
---|
1982 | // search the individual phrases first:
|
---|
1983 | for(int i = 0; i < phrases.length; i++) {
|
---|
1984 | if(phrases.equals("") || phrases.equals(" "))
|
---|
1985 | continue; //skip when there are no terms
|
---|
1986 | docTitlepids = this.searchDocumentTitles(
|
---|
1987 | collection, phrases[i], false);
|
---|
1988 | for(int j = 0; j < docTitlepids.length; j++)
|
---|
1989 | set.add(docTitlepids[j]);
|
---|
1990 | }
|
---|
1991 | }
|
---|
1992 | // (2) use FedoraGSearch to search doc AND section titles, and
|
---|
1993 | // fulltext (in case these were specified in nameValParamsMap):
|
---|
1994 | String searchResult = this.fedoraGSearch.search(
|
---|
1995 | nameValParamsMap, 1, maxDocs);
|
---|
1996 |
|
---|
1997 | String[] pids = this.fedoraGSearch.getPIDsFromSearchResult(
|
---|
1998 | collection, searchResult);
|
---|
1999 |
|
---|
2000 | for(int i = 0; i < pids.length; i++)
|
---|
2001 | set.add(pids[i]);
|
---|
2002 |
|
---|
2003 | pids = null;
|
---|
2004 | pids = new String[set.size()];
|
---|
2005 | set.toArray(pids); // unique pids
|
---|
2006 | return pids;
|
---|
2007 | }
|
---|
2008 |
|
---|
2009 | /** @return a String representing Greenstone3 XML for a query process
|
---|
2010 | * response returning the results for the query denoted by parameter
|
---|
2011 | * nameValParamsMap.
|
---|
2012 | * @param nameValParamsMap is a Hashmap of name and value pairs for all the
|
---|
2013 | * query field data values. The names match the field names that
|
---|
2014 | * describeCollectionService() would have returned for the query service.
|
---|
2015 | * @param collection is the name of the collection
|
---|
2016 | * @param service is the name of the query service
|
---|
2017 | * This method is only ever called when any of the services in the digital
|
---|
2018 | * library described themselves as type=query. Therefore any digital
|
---|
2019 | * libraries that have no query services, can just return emtpy message
|
---|
2020 | * strings (or even "") since this method will never be called on them
|
---|
2021 | * anyway. */
|
---|
2022 | public String query(String collection, String service,
|
---|
2023 | Map nameValParamsMap)
|
---|
2024 | {
|
---|
2025 | FedoraGS3RunException ex = null;
|
---|
2026 | // (1) obtain the requested number of maximum result documents
|
---|
2027 | int maxDocs = 100;
|
---|
2028 | try{
|
---|
2029 | maxDocs = Integer.parseInt((String)nameValParamsMap.get(MAXDOCS));
|
---|
2030 | } catch(NumberFormatException e) {
|
---|
2031 | maxDocs = 100;
|
---|
2032 | }
|
---|
2033 |
|
---|
2034 | String pids[] = {};
|
---|
2035 | // (2) for Textquery, we simply search ALL_FIELDS using FedoraGSearch
|
---|
2036 | if(service.equals("TextQuery")) {
|
---|
2037 | try {
|
---|
2038 | // get the Query field:
|
---|
2039 | String query = (String)nameValParamsMap.get(QUERY);
|
---|
2040 | pids = textQuery(collection, query, maxDocs);
|
---|
2041 | }
|
---|
2042 | catch(Exception e) {
|
---|
2043 | LOG.error("Error in TextQuery processing: " + e);
|
---|
2044 | ex = new FedoraGS3RunException(
|
---|
2045 | "When trying to use FedoraGenericSearch for a TextQuery", e);
|
---|
2046 |
|
---|
2047 | }
|
---|
2048 | } else { // (3) FieldQuery
|
---|
2049 | // first get the comma-separated lists
|
---|
2050 | String listOfFieldNames = (String)nameValParamsMap.get(FIELDNAME_ATT);
|
---|
2051 | String listOfSearchTerms = (String)nameValParamsMap.get(QUERY);
|
---|
2052 | // both are comma separated lists, so split both on 'comma'
|
---|
2053 | String[] fieldNames = listOfFieldNames.split(COMMA);
|
---|
2054 | String[] searchTerms = listOfSearchTerms.split(COMMA);
|
---|
2055 |
|
---|
2056 | // In the fieldNames and searchTerms lists of nameValParamsMap,
|
---|
2057 | // each searchTerm element was matched with its correspondingly
|
---|
2058 | // indexed fieldName.
|
---|
2059 | // A new map is going to reorganise this, by putting all terms
|
---|
2060 | // for a particular fieldName together in a comma separated list
|
---|
2061 | // and associating that with the fieldName. I.e. (key, value) ->
|
---|
2062 | // (fieldName, comma-separated list of all terms in that field)
|
---|
2063 | Map map = new HashMap();
|
---|
2064 | for(int i = 0; i < searchTerms.length; i++) {
|
---|
2065 | // there may be fewer searchTerms than fieldNames (since some
|
---|
2066 | // fieldNames may have been left empty), so loop on searchTerms
|
---|
2067 | if(map.containsKey(fieldNames[i])) { // fieldName is already
|
---|
2068 | // in the list, so append comma with new value
|
---|
2069 | String termsList = (String)map.get(fieldNames[i]);
|
---|
2070 | termsList = termsList + COMMA + searchTerms[i];
|
---|
2071 | map.put(fieldNames[i], termsList);
|
---|
2072 | } else { // this is the first time this fieldName occurred
|
---|
2073 | // just put the fieldName with searchTerm as-is
|
---|
2074 | map.put(fieldNames[i], searchTerms[i]);
|
---|
2075 | }
|
---|
2076 | }
|
---|
2077 |
|
---|
2078 | try {
|
---|
2079 | // For fieldquery, we search on all the fieldNames specified
|
---|
2080 | // - if DOC_TITLES is specified then we use Fedora's search
|
---|
2081 | // - for all other fieldNames specified, we use FedoraGSearch
|
---|
2082 | pids = fieldQuery(collection, map, maxDocs);
|
---|
2083 | }
|
---|
2084 | catch(Exception e) {
|
---|
2085 | LOG.error("Error in FieldQuery processing: " + e);
|
---|
2086 | ex = new FedoraGS3RunException(
|
---|
2087 | "When trying to use FedoraGenericSearch for a FieldQuery", e);
|
---|
2088 | }
|
---|
2089 | }
|
---|
2090 |
|
---|
2091 | // Build Greenstone XML Query response message for from
|
---|
2092 | // the pids (which should be document identifiers)
|
---|
2093 | Document doc = builder.newDocument();
|
---|
2094 | // <metadataList><metadata name="numDocsMatched" value="n" />
|
---|
2095 | // </metadataList>
|
---|
2096 | Element metadataList = doc.createElement(
|
---|
2097 | GSXML.METADATA_ELEM+GSXML.LIST_MODIFIER);
|
---|
2098 | Element metadata = doc.createElement(GSXML.METADATA_ELEM);
|
---|
2099 |
|
---|
2100 | Attr attribute = doc.createAttribute(GSXML.NAME_ATT);
|
---|
2101 | attribute.setValue(NUM_DOCS_MATCHED);
|
---|
2102 | metadata.setAttributeNode(attribute);
|
---|
2103 |
|
---|
2104 | attribute = doc.createAttribute(GSXML.VALUE_ATT);
|
---|
2105 | attribute.setValue(Integer.toString(pids.length));
|
---|
2106 | metadata.setAttributeNode(attribute);
|
---|
2107 |
|
---|
2108 | metadataList.appendChild(metadata);
|
---|
2109 |
|
---|
2110 | // <documentNodeList>
|
---|
2111 | // <documentNode nodeID="HASHac0a04dd14571c60d7fbfd.4.2"
|
---|
2112 | // docType='hierarchy' nodeType="leaf" />
|
---|
2113 | // ...
|
---|
2114 | // ...
|
---|
2115 | // </documentNodeList>
|
---|
2116 | Element docNodeList = doc.createElement(
|
---|
2117 | GSXML.DOC_NODE_ELEM+GSXML.LIST_MODIFIER);
|
---|
2118 | // for each
|
---|
2119 | for(int i = 0; i < pids.length; i++) {
|
---|
2120 | Element docNode = doc.createElement(GSXML.DOC_NODE_ELEM);
|
---|
2121 | attribute = doc.createAttribute(GSXML.NODE_ID_ATT);
|
---|
2122 | attribute.setValue(pids[i]);
|
---|
2123 | docNode.setAttributeNode(attribute);
|
---|
2124 |
|
---|
2125 | attribute = doc.createAttribute(GSXML.DOC_TYPE_ATT);
|
---|
2126 | attribute.setValue("hierarchy");
|
---|
2127 | docNode.setAttributeNode(attribute);
|
---|
2128 |
|
---|
2129 | attribute = doc.createAttribute(GSXML.NODE_TYPE_ATT);
|
---|
2130 | attribute.setValue("root");
|
---|
2131 | docNode.setAttributeNode(attribute);
|
---|
2132 | docNodeList.appendChild(docNode);
|
---|
2133 | }
|
---|
2134 |
|
---|
2135 | Element responseMsg = createResponseMessage(doc, docNodeList, ex,
|
---|
2136 | GSXML.REQUEST_TYPE_PROCESS, service);
|
---|
2137 | try{
|
---|
2138 | return FedoraCommons.elementToFormattedString(responseMsg);
|
---|
2139 | }catch(TransformerException e) {
|
---|
2140 | return FedoraGS3RunException.xmlToStringConversionFailureResponseMsg
|
---|
2141 | + " " + e;
|
---|
2142 | }
|
---|
2143 | }
|
---|
2144 |
|
---|
2145 | public static void main(String args[]) {
|
---|
2146 | try{
|
---|
2147 | // testing default constructor
|
---|
2148 | //FedoraGS3Connection con = new FedoraGS3Connection();
|
---|
2149 |
|
---|
2150 | // testing constructor that takes properties file to show initial
|
---|
2151 | // fedora server values
|
---|
2152 | java.io.File propertyFilename
|
---|
2153 | = new java.io.File("fedoraGS3.properties");
|
---|
2154 | FedoraGS3Connection con = new FedoraGS3Connection(propertyFilename);
|
---|
2155 |
|
---|
2156 | // DESCRIBE: serviceList, collectionList
|
---|
2157 | System.out.println("serviceList:\n" + con.getServiceList());
|
---|
2158 |
|
---|
2159 | System.out.println("collectionList:\n" + con.getCollectionList());
|
---|
2160 |
|
---|
2161 | String[] colPIDs = con.getCollections();
|
---|
2162 | String[] collectionNames = con.getCollectionNames(con.getCollections());
|
---|
2163 |
|
---|
2164 |
|
---|
2165 | for(int i = 0; i < collectionNames.length; i++) {
|
---|
2166 | System.out.println("Describing collections:\n");
|
---|
2167 | System.out.println(con.describeCollection(collectionNames[i]));
|
---|
2168 | System.out.println("Describing collection services:\n"
|
---|
2169 | + con.describeCollectionServices(collectionNames[i]));
|
---|
2170 | }
|
---|
2171 |
|
---|
2172 | String[] serviceNames = con.getServiceNames();
|
---|
2173 | for(int i = 0; i < serviceNames.length; i++) {
|
---|
2174 | System.out.println("Describing " + serviceNames[i] + ":\n"
|
---|
2175 | + con.describeCollectionService("demo", serviceNames[i]));
|
---|
2176 | }
|
---|
2177 |
|
---|
2178 |
|
---|
2179 | // TRYING OUT SPECIAL top-level document metadata retrieval (DLS, DC)
|
---|
2180 | // along with EX of the top-level document:
|
---|
2181 | System.out.println("\nGET META for greenstone:gs2mgdemo-HASH01d667303fe98545f03c14ae:");
|
---|
2182 | System.out.println(con.getDocumentMetadata(new String[]{"greenstone:gs2mgdemo-HASH01d667303fe98545f03c14ae"}));
|
---|
2183 |
|
---|
2184 |
|
---|
2185 | String[] docIDs = con.getCollectionDocs(colPIDs[0]);
|
---|
2186 | System.out.println("\nGET CONTENT:");
|
---|
2187 | for(int i = 0; i < docIDs.length; i++) {
|
---|
2188 | System.out.println(con.getContent(docIDs[i]));
|
---|
2189 | }
|
---|
2190 |
|
---|
2191 | System.out.println("\nGET META:");
|
---|
2192 | for(int i = 0; i < docIDs.length; i++) {
|
---|
2193 | System.out.println(con.getDocumentMetadata(docIDs[i]));
|
---|
2194 | }
|
---|
2195 |
|
---|
2196 | String[] getTitlesFor = {
|
---|
2197 | "greenstone:gs2mgdemo-HASH01d667303fe98545f03c14ae",
|
---|
2198 | "greenstone:gs2mgdemo-HASHa568bac1d8d7bd12a0938b",
|
---|
2199 | "greenstone:gs2mgdemo-HASHa568bac1d8d7bd12a0938b-1",
|
---|
2200 | "greenstone:gs2mgdemo-HASH01d667303fe98545f03c14ae-1.7",
|
---|
2201 | "greenstone:gs2mgdemo-HASHa568bac1d8d7bd12a0938b-1.5.1"
|
---|
2202 | };
|
---|
2203 |
|
---|
2204 | // first let's display the regular meta for top-level docs and
|
---|
2205 | // their sections
|
---|
2206 | for(int i = 0; i < getTitlesFor.length; i++) {
|
---|
2207 | System.out.println(con.getDocumentMetadata(getTitlesFor[i]));
|
---|
2208 | }
|
---|
2209 |
|
---|
2210 | System.out.println("\nTitles are:");
|
---|
2211 | System.out.println(con.getTitleMetadata(getTitlesFor));
|
---|
2212 |
|
---|
2213 | System.out.println("\nGET STRUCTURE:");
|
---|
2214 | for(int i = 0; i < docIDs.length; i++) {
|
---|
2215 | System.out.println(con.getChildren(docIDs[i]));
|
---|
2216 | System.out.println(con.getDocumentStructure(docIDs[i]));
|
---|
2217 | }
|
---|
2218 |
|
---|
2219 | // TEST ERROR CASES:
|
---|
2220 | System.out.println("\nTESTING ERROR CASES");
|
---|
2221 | System.out.println(con.getContent("greenstone:demo-pinky"));
|
---|
2222 | String[] errorCases = { "greenstone:demo-HASH23d1019b589e2ef6a680e3-1.5.1.5",
|
---|
2223 | "greenstone:demo-pinky" };
|
---|
2224 | System.out.println(con.getContent(errorCases));
|
---|
2225 | System.out.println(con.getDocumentMetadata(errorCases));
|
---|
2226 | System.out.println(con.getDocumentStructure(errorCases));
|
---|
2227 |
|
---|
2228 | System.out.println("\nCLASSIFIER BROWSE");
|
---|
2229 | System.out.println(con.browse("gs2mgdemo", //"ClassifierBrowse",
|
---|
2230 | new String[]{"CL1"}));
|
---|
2231 |
|
---|
2232 | System.out.println("\nCLASSIFIER BROWSE METADATA RETRIEVE");
|
---|
2233 | String[] classNodeIDs = new String[26];
|
---|
2234 | for(int i = 0; i < classNodeIDs.length; i++) {
|
---|
2235 | int subClassifierNum = i + 1;
|
---|
2236 | classNodeIDs[i] = "CL1." + subClassifierNum;
|
---|
2237 | }
|
---|
2238 | System.out.println(con.browseMetadataRetrieve(//"gs2mgdemo",
|
---|
2239 | classNodeIDs));
|
---|
2240 |
|
---|
2241 | System.out.println("Testing query services");
|
---|
2242 | System.out.println("TEXT QUERY:");
|
---|
2243 | Map formControlValsMap = new HashMap();
|
---|
2244 | formControlValsMap.put(MAXDOCS, "100");
|
---|
2245 | formControlValsMap.put(QUERY, "snails");
|
---|
2246 | String searchResponse
|
---|
2247 | = con.query("gs2mgdemo", "TextQuery", formControlValsMap);
|
---|
2248 | System.out.println(searchResponse);
|
---|
2249 |
|
---|
2250 | System.out.println("FIELD QUERY:");
|
---|
2251 | formControlValsMap.clear();
|
---|
2252 | formControlValsMap.put(MAXDOCS, "100");
|
---|
2253 | formControlValsMap.put(QUERY, "interview,Gender equality,cyclone");
|
---|
2254 | formControlValsMap.put(FIELDNAME_ATT,
|
---|
2255 | "allFields,docTitles,allFields,allFields");
|
---|
2256 | searchResponse
|
---|
2257 | = con.query("gs2mgdemo", "FieldQuery", formControlValsMap);
|
---|
2258 | System.out.println(searchResponse);
|
---|
2259 |
|
---|
2260 | System.exit(0);
|
---|
2261 | }catch(Exception e) {
|
---|
2262 | JOptionPane.showMessageDialog(
|
---|
2263 | null, e, "Error", JOptionPane.ERROR_MESSAGE);
|
---|
2264 | //System.err.println("ERROR: " + e);
|
---|
2265 | e.printStackTrace();
|
---|
2266 | }
|
---|
2267 | }
|
---|
2268 | }
|
---|