1 | /**
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2 | *############################################################################
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3 | * A component of the Greenstone Librarian Interface, part of the Greenstone
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4 | * digital library suite from the New Zealand Digital Library Project at the
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5 | * University of Waikato, New Zealand.
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6 | *
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7 | * Author: Michael Dewsnip, NZDL Project, University of Waikato, NZ
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8 | *
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9 | * Copyright (C) 2004 New Zealand Digital Library Project
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10 | *
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11 | * This program is free software; you can redistribute it and/or modify
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12 | * it under the terms of the GNU General Public License as published by
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13 | * the Free Software Foundation; either version 2 of the License, or
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14 | * (at your option) any later version.
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15 | *
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16 | * This program is distributed in the hope that it will be useful,
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17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | * GNU General Public License for more details.
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20 | *
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21 | * You should have received a copy of the GNU General Public License
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22 | * along with this program; if not, write to the Free Software
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23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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24 | *############################################################################
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25 | */
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26 |
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27 | package org.greenstone.gatherer.metadata;
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28 |
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29 |
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30 | import java.io.*;
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31 | import java.util.*;
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32 | import org.greenstone.gatherer.Gatherer;
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33 | import org.greenstone.gatherer.collection.CollectionManager;
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34 | import org.greenstone.gatherer.remote.RemoteGreenstoneServer;
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35 | import org.greenstone.gatherer.util.XMLTools;
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36 | import org.w3c.dom.*;
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37 |
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38 |
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39 | /** This class represents one profile.xml file */
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40 | public class ProfileXMLFile
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41 | extends File
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42 | {
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43 | private HashMap metadata_mapping = null;
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44 |
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45 |
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46 | public ProfileXMLFile(String profile_xml_file_path)
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47 | {
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48 | super(profile_xml_file_path);
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49 | }
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50 |
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51 |
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52 | public String getMetadataElementFor(String metadata_element_name_full)
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53 | {
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54 | if (getMetadataMapping() == null) {
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55 | return null;
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56 | }
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57 |
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58 | return (String) metadata_mapping.get(metadata_element_name_full);
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59 | }
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60 |
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61 |
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62 | public HashMap getMetadataMapping()
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63 | {
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64 | // If we have already loaded the metadata mapping, use it
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65 | if (metadata_mapping != null) {
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66 | return metadata_mapping;
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67 | }
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68 |
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69 | // Build the metadata mapping from the profile.xml file
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70 | metadata_mapping = new HashMap();
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71 |
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72 | // Parse the profile.xml file
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73 | Document document = XMLTools.parseXMLFile(this);
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74 | if (document == null) {
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75 | System.err.println("Error: Could not parse profile.xml file " + getAbsolutePath());
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76 | return null;
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77 | }
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78 |
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79 | // Read all the Action elements in the file
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80 | NodeList action_elements_nodelist = document.getElementsByTagName("Action");
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81 | for (int i = 0; i < action_elements_nodelist.getLength(); i++) {
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82 | Element current_action_element = (Element) action_elements_nodelist.item(i);
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83 | String source_metadata_element_name_full = current_action_element.getAttribute("source");
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84 | String target_metadata_element_name_full = current_action_element.getAttribute("target");
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85 | metadata_mapping.put(source_metadata_element_name_full, target_metadata_element_name_full);
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86 | }
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87 |
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88 | return metadata_mapping;
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89 | }
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90 |
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91 |
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92 | public void mapElement(String source_metadata_element_name_full, String target_metadata_element_name_full)
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93 | {
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94 | // Parse the profile.xml file
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95 | Document document = XMLTools.parseXMLFile(this);
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96 | if (document == null) {
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97 | System.err.println("Error: Could not parse profile.xml file " + getAbsolutePath());
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98 | return;
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99 | }
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100 |
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101 | // Create a new Action element to record this mapping
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102 | Element new_action_element = document.createElement("Action");
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103 | new_action_element.setAttribute("source", source_metadata_element_name_full);
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104 | new_action_element.setAttribute("target", target_metadata_element_name_full);
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105 | document.getDocumentElement().appendChild(new_action_element);
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106 |
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107 | // Rewrite the profile.xml file
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108 | XMLTools.writeXMLFile(this, document);
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109 |
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110 | // This is inefficient but for simplicity we'll just upload the file every time it is changed
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111 | if (Gatherer.isGsdlRemote) {
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112 | Gatherer.remoteGreenstoneServer.uploadCollectionFile(CollectionManager.getLoadedCollectionName(), this);
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113 | }
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114 |
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115 | // Invalidate the metadata mapping
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116 | metadata_mapping = null;
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117 | }
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118 | }
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