1 | package org.greenstone.gsdl3.gs3build.doctypes;
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2 |
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3 | import java.util.List;
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4 | import java.util.ArrayList;
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5 | import java.util.Iterator;
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6 | import java.util.HashMap;
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7 | import java.util.Map;
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8 |
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9 | import java.sql.SQLException;
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10 | import java.sql.ResultSet;
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11 |
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12 | import java.net.URL;
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13 |
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14 | import org.greenstone.gsdl3.gs3build.metadata.NamespaceFactory;
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15 | import org.greenstone.gsdl3.gs3build.metadata.GSDL3Namespace;
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16 | import org.greenstone.gsdl3.gs3build.metadata.METSDescriptiveSet;
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17 | import org.greenstone.gsdl3.gs3build.metadata.METSFile;
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18 | import org.greenstone.gsdl3.gs3build.metadata.METSFileSet;
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19 | import org.greenstone.gsdl3.gs3build.metadata.METSHeader;
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20 | import org.greenstone.gsdl3.gs3build.metadata.METSStructure;
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21 | import org.greenstone.gsdl3.gs3build.metadata.METSStructureSet;
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22 | import org.greenstone.gsdl3.gs3build.metadata.METSDivision;
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23 | import org.greenstone.gsdl3.gs3build.metadata.METSNamespace;
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24 |
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25 | import org.greenstone.gsdl3.gs3build.util.MultiMap;
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26 | import org.greenstone.gsdl3.gs3build.util.GS3SQLConnection;
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27 |
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28 | /**
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29 | * Provide a base-line functionality for the <code>DocumentInterface</code>
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30 | * class.
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31 | */
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32 |
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33 | public abstract class AbstractDocument implements DocumentInterface
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34 | {
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35 | METSFileSet fileSet;
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36 | METSDescriptiveSet metadata;
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37 | METSStructureSet structureSet;
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38 | METSHeader header;
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39 | DocumentID id;
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40 | boolean isModified;
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41 |
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42 | /**
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43 | * <p>Create a very vanilla document with a given document identifier.</p>
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44 | * <p>Most commonly used in dealing with loading files using DocumentFactory
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45 | * or similar.</p>
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46 | *
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47 | * @param <code>DocumentID</code> the document identifier
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48 | */
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49 | public AbstractDocument(DocumentID id)
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50 | { this.fileSet = new METSFileSet();
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51 | this.metadata = new METSDescriptiveSet();
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52 | this.header = new METSHeader();
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53 | this.structureSet = new METSStructureSet();
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54 | this.id = id;
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55 | }
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56 |
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57 | /**
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58 | * Create a basic document from a given <code>URL</code. This is usually the form
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59 | * called through the recognisers.
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60 | *
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61 | * @param <code>URL</code> the URL of the first file in the document package
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62 | */
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63 | public AbstractDocument(URL url)
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64 | { this.fileSet = new METSFileSet();
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65 | METSFile metsFile = this.fileSet.addFile(url);
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66 | this.metadata = new METSDescriptiveSet();
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67 | this.header = new METSHeader();
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68 | this.structureSet = new METSStructureSet();
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69 | this.id = null;
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70 |
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71 | METSStructure structure = new METSStructure("All", "All", "Whole Document");
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72 | METSDivision documentBody = new METSDivision("All", "All", "All", "Whole Document", "Document");
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73 | structure.addDivision(documentBody);
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74 | this.structureSet.addStructure(structure);
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75 | documentBody.addFileReference(metsFile.getID());
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76 | documentBody.addMetadataReference("DM1");
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77 | }
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78 |
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79 | /**
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80 | * Set the identified for the document. Every document should have
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81 | * a document number set on its accession, either through metadata
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82 | * placed upon it internally or externally, or by assignment through
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83 | * a <code>DocumentIDFactory</code>. Each identifier should be
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84 | * unique.
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85 | *
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86 | * @param <code>DocumentID</code> the document identifier - in XML
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87 | * terms, the gsdl3:id element.
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88 | */
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89 | public void setID(DocumentID id)
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90 | { this.id = id;
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91 | }
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92 |
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93 | /**
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94 | * Get the document identifier - this should be unique to the document,
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95 | * but care must be taken in the configuration of the collection to
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96 | * ensure that this is the case.
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97 | *
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98 | * @return <code>DocumentID</code> the identifer
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99 | */
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100 | public DocumentID getID()
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101 | { return this.id;
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102 | }
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103 |
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104 | /**
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105 | * Indicate whether this document is indexed.
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106 | *
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107 | * @see: DocumentInterface.isIndexed
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108 | */
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109 | public boolean isIndexed()
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110 | {
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111 | return true;
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112 | }
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113 |
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114 | /**
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115 | * Obtain the METS header of this document
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116 | *
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117 | * @return <code>METSHeader</code> the header
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118 | */
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119 | public METSHeader getHeader()
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120 | { return this.header;
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121 | }
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122 |
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123 | /**
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124 | * Set the METS header for this document.
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125 | *
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126 | * @param <code>METSHeader</code> the header
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127 | */
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128 | public void setHeader(METSHeader header)
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129 | { this.header = header;
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130 | }
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131 |
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132 | /**
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133 | * A simple implementation of the isDocumentType function that does <b>not</b> consider
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134 | * inheritance - it <code>must</code> be extended as required.
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135 | */
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136 | public boolean isDocumentType(String type)
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137 | { return type.equals(this.getDocumentType());
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138 | }
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139 |
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140 | public abstract String getDocumentType();
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141 |
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142 | public abstract String getDocumentText();
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143 |
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144 | public String getMETSType()
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145 | { return "document";
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146 | }
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147 |
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148 | /**
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149 | * @see DocumentInterface:addDocumentMetadata
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150 | */
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151 | public void addDocumentMetadata(String name, String value)
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152 | { int colonAt = name.indexOf(":");
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153 | String namespace;
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154 |
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155 | if (colonAt > 0) {
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156 | namespace = name.substring(0, colonAt);
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157 | name = name.substring(colonAt+1);
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158 | }
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159 | else {
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160 | namespace = GSDL3Namespace.GSDL3_NAMESPACE_ID;
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161 | }
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162 |
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163 | // no need to set isModified, as the following call will do it anyway!
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164 | this.addDocumentMetadata(namespace, name, value);
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165 | }
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166 |
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167 | /**
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168 | * @see DocumentInterface:addDocumentMetadata
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169 | */
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170 | public void addDocumentMetadata(String namespace, String label, String value)
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171 | { this.metadata.addMetadata("default", namespace, label, value);
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172 | this.isModified = true;
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173 | }
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174 |
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175 | /**
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176 | * Post metadata to a file in this document - the appropriate changes
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177 | * should be made...
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178 | */
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179 | public void postFileMetadata(URL fileLocation, String namespace, String label, String value)
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180 | {
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181 | // First get the list of file groups, etc. that this file is associated with...
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182 | List fileGroups = this.fileSet.findGroups(fileLocation);
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183 |
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184 | // Next, get the METS divisions associated with each file group...
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185 | List divisions = this.structureSet.findDivisionsForFiles(fileGroups);
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186 |
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187 | // Finally, post the metadata to the metadata group associated with each structure
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188 | Iterator divisionIter = divisions.iterator();
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189 | while (divisionIter.hasNext())
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190 | { METSDivision division = (METSDivision) divisionIter.next();
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191 |
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192 | // get the open namespace for this division
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193 | METSNamespace namespaceMetadata = division.findNamespace(namespace, true, this.metadata);
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194 |
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195 | // then post the metadata to it...
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196 | namespaceMetadata.addMetadata(label, value);
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197 | }
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198 | }
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199 |
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200 | /**
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201 | * @see DocumentInterface:setDocumentMetadata
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202 | */
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203 | public void setDocumentMetadata(String namespace, String label, String value)
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204 | { this.metadata.setMetadata("default", namespace, label, value);
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205 | this.isModified = true;
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206 | }
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207 |
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208 | /**
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209 | * Get the metadata structure of the document
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210 | *
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211 | * @return <code>METSDescriptive</code> the metadata holder for the document.
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212 | */
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213 | public METSDescriptiveSet getDocumentMetadata()
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214 | { return this.metadata;
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215 | }
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216 |
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217 | /**
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218 | * Set the metadata structure for this document
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219 | *
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220 | * @param <code>METSDescriptive</code> the new metadata holder for the document.
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221 | */
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222 | public void setDocumentMetadata(METSDescriptiveSet metadata)
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223 | { this.metadata = metadata;
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224 | this.isModified = true;
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225 | }
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226 |
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227 | /**
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228 | * Get the metadata structure of the document
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229 | *
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230 | * @return <code>METSStructureSet</code> the metadata holder for the document.
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231 | */
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232 | public METSStructureSet getDocumentStructure()
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233 | { return this.structureSet;
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234 | }
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235 |
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236 | public void setDocumentStructure(METSStructureSet structureSet)
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237 | { this.structureSet = structureSet;
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238 | }
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239 |
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240 | /**
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241 | * Get the values associated with a particular metadata value.
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242 | *
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243 | * @param <code>String</code> the namespace to find the values in.
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244 | * @param <code>String</code> the label to match to find the values.
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245 | *
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246 | * @return <code>List</code> the values.
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247 | */
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248 | public List getDocumentMetadataItem(String namespace, String label)
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249 | { return this.metadata.getMetadata("default", namespace, label);
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250 | }
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251 |
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252 | /**
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253 | * Get the values associated with a particular metadata value.
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254 | *
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255 | * @param <code>String</code> the namespace and label separated by a
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256 | * colon.
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257 | *
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258 | * @return <code>List</code> the values.
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259 | */
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260 | public List getDocumentMetadataItem(String namespaceLabel)
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261 | { String namespace, label;
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262 |
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263 | int colonAt = namespaceLabel.indexOf(':');
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264 | if (colonAt < 0)
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265 | { namespace = GSDL3Namespace.GSDL3_NAMESPACE_ID;
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266 | label = namespaceLabel;
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267 | }
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268 | else
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269 | { namespace = namespaceLabel.substring(0, colonAt);
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270 | label = namespaceLabel.substring(colonAt+1);
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271 | }
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272 | return this.metadata.getMetadata("default", namespace, label);
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273 | }
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274 |
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275 | /**
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276 | * @see DocumentInterface:getDocumentFiles
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277 | */
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278 | public METSFileSet getDocumentFiles()
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279 | { return this.fileSet;
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280 | }
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281 |
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282 | public void setDocumentFiles(METSFileSet fileSet)
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283 | { this.fileSet = fileSet;
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284 | }
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285 |
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286 | /**
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287 | * @see DocumentInterface:isMETSCompatible
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288 | */
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289 | public boolean isMETSCompatible()
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290 | { return true;
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291 | }
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292 |
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293 | /**
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294 | * Use a default document writer - this may be overridden for subclasses...
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295 | *
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296 | * @see DocumentInterface:writeMETSObject
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297 | */
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298 | public DocumentWriter getMETSWriter()
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299 | { return new DocumentWriter();
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300 | }
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301 |
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302 | /**
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303 | * Use a default SQL document writer - this may be overridden for subclasses...
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304 | *
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305 | */
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306 | public DocumentSQLWriter getSQLWriter()
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307 | { return new DocumentSQLWriter();
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308 | }
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309 |
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310 | /**
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311 | * Obtain a document from the SQL database
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312 | */
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313 | public static AbstractDocument readSQL(GS3SQLConnection connection, ResultSet sqlResult)
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314 | { try {
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315 | DocumentID id = new DocumentID(sqlResult.getString("DocID"));
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316 | String type = sqlResult.getString("docType");
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317 |
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318 | // Use a factory method to create the correct subtype...
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319 | AbstractDocument document = DocumentFactory.createDocument(type, id);
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320 |
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321 | // Get the individual components of the document
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322 | METSFileSet fileSet = METSFileSet.readSQL(document, connection);
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323 | document.setDocumentFiles(fileSet);
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324 | METSDescriptiveSet descriptiveSet = METSDescriptiveSet.readSQL(document, connection);
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325 | document.setDocumentMetadata(descriptiveSet);
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326 | METSStructureSet structureSet = METSStructureSet.readSQL(document, connection);
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327 | document.setDocumentStructure(structureSet);
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328 |
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329 | // indicate that the document is not currently modified
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330 | document.setModified(false);
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331 | return document;
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332 | }
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333 | catch (SQLException sqlEx) {
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334 | }
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335 | return null;
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336 | }
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337 |
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338 | /**
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339 | *
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340 | */
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341 | public boolean isModified()
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342 | { return this.isModified;
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343 | }
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344 |
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345 | public void setModified(boolean isModified)
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346 | { this.isModified = isModified;
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347 | }
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348 | }
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