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.awt.*;
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31 | import java.io.*;
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32 | import java.util.*;
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33 | import javax.swing.*;
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34 | import javax.swing.table.*;
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35 | import org.greenstone.gatherer.Configuration;
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36 | import org.greenstone.gatherer.DebugStream;
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37 | import org.greenstone.gatherer.Dictionary;
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38 | import org.greenstone.gatherer.Gatherer;
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39 | import org.greenstone.gatherer.collection.CollectionTreeNode;
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40 | import org.greenstone.gatherer.gui.WarningDialog;
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41 |
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42 |
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43 | public class MetadataValueTableModel
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44 | extends AbstractTableModel
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45 | {
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46 | /** It is not expected that this class will ever be serialized */
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47 | private static final long serialVersionUID = 0L;
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48 |
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49 | /** The CollectionTreeNodes this model is built for */
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50 | private CollectionTreeNode[] file_nodes = null;
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51 | /** The list of MetadataValueTableEntries in the table */
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52 | private ArrayList metadata_value_table_entries = new ArrayList();
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53 |
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54 | static final private String[] COLUMN_NAMES = { "", Dictionary.get("Metadata.Element"), Dictionary.get("Metadata.Value") };
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55 |
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56 |
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57 | public int addBlankRowForMetadataElement(MetadataElement metadata_element)
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58 | {
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59 | MetadataValueTableModelBuilder metadata_value_table_model_builder = new MetadataValueTableModelBuilder();
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60 | MetadataValue blank_metadata_value = new MetadataValue(metadata_element, new MetadataValueTreeNode(""));
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61 | return metadata_value_table_model_builder.insertMetadataValue(blank_metadata_value);
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62 | }
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63 |
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64 |
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65 | public int findMetadataValueTableEntryToSelect(MetadataValueTableEntry metadata_value_table_entry)
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66 | {
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67 | MetadataElement metadata_element = metadata_value_table_entry.getMetadataElement();
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68 |
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69 | // Find the correct entry to select
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70 | for (int i = 0; i < metadata_value_table_entries.size(); i++) {
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71 | MetadataValueTableEntry current_metadata_value_table_entry = (MetadataValueTableEntry) metadata_value_table_entries.get(i);
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72 | int element_comparison = MetadataSetManager.compareMetadataElements(current_metadata_value_table_entry.getMetadataElement(), metadata_element);
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73 |
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74 | // We've found the right element, so check if the value already exists
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75 | if (element_comparison == 0) {
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76 | int value_comparison = current_metadata_value_table_entry.compareTo(metadata_value_table_entry);
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77 | if (value_comparison == 0) {
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78 | // Entry found!
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79 | return i;
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80 | }
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81 | }
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82 |
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83 | // We've just gone past the correct entry to select
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84 | if (element_comparison > 0) {
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85 | return i - 1;
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86 | }
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87 | }
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88 |
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89 | // Have to select the last entry
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90 | return metadata_value_table_entries.size() - 1;
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91 | }
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92 |
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93 |
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94 | public Class getColumnClass(int col)
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95 | {
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96 | return getValueAt(0, col).getClass();
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97 | }
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98 |
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99 |
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100 | /** Returns the number of columns in this table. */
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101 | public int getColumnCount()
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102 | {
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103 | return COLUMN_NAMES.length;
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104 | }
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105 |
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106 |
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107 | /** Retrieves the name of the specified column. */
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108 | public String getColumnName(int col)
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109 | {
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110 | return COLUMN_NAMES[col];
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111 | }
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112 |
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113 |
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114 | /* Called to retrieve the MetadataValueTableEntry at a certain row. Usually caused by the user selecting a row in the table. It is synchronized so that the model doesn't up and change while we're trying to retrieve the indicated element. */
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115 | public synchronized MetadataValueTableEntry getMetadataValueTableEntry(int row)
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116 | {
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117 | if (row >= 0 && row < metadata_value_table_entries.size()) {
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118 | return (MetadataValueTableEntry) metadata_value_table_entries.get(row);
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119 | }
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120 |
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121 | return null;
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122 | }
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123 |
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124 |
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125 | /** Returns the number of rows in this table. */
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126 | public int getRowCount()
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127 | {
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128 | return metadata_value_table_entries.size();
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129 | }
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130 |
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131 |
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132 | /** Returns the cell value at a given row and column as an Object. */
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133 | public Object getValueAt(int row, int col)
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134 | {
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135 | // Check values are reasonable
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136 | if (row < 0 || row >= metadata_value_table_entries.size() || col < 0 || col >= COLUMN_NAMES.length) {
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137 | return null;
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138 | }
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139 |
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140 | MetadataValueTableEntry metadata_value_table_entry = (MetadataValueTableEntry) metadata_value_table_entries.get(row);
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141 |
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142 | if(metadata_value_table_entry == null) {
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143 | System.err.println("\n@@@@@ MetadataValueTableModel.getValueAt(): metadata_value_table_entry is unexpectedly null!\n");
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144 | return null;
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145 | }
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146 |
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147 | if (col == 0 && metadata_value_table_entry.isInheritedMetadata()) {
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148 | return metadata_value_table_entry.getFolderMetadataInheritedFrom();
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149 | }
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150 |
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151 | if (col == 1) {
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152 | return metadata_value_table_entry.getMetadataElement();
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153 | }
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154 |
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155 | if (col == 2)
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156 | {
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157 | return decodeHTMLEntities(metadata_value_table_entry.getFullValue());
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158 | }
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159 |
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160 | return null;
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161 | }
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162 |
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163 | public String decodeHTMLEntities(String text)
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164 | {
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165 | text = text.replace("&#40;", "(");
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166 | text = text.replace("&#41;", ")");
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167 | text = text.replace("&#44;", ",");
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168 | text = text.replace("&#60;", "<");
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169 | text = text.replace("&#62;", ">");
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170 | text = text.replace("&#91;", "[");
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171 | text = text.replace("&#93;", "]");
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172 | text = text.replace("&#123;", "{");
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173 | text = text.replace("&#125;", "}");
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174 | return text;
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175 | }
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176 |
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177 | public boolean isCellEditable(int row, int col)
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178 | {
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179 | // The inherited and element columns are never editable
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180 | if (col < 2) {
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181 | return false;
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182 | }
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183 |
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184 | // Extracted and inherited metadata is not editable
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185 | MetadataValueTableEntry metadata_value_table_entry = (MetadataValueTableEntry) metadata_value_table_entries.get(row);
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186 | if (metadata_value_table_entry.getMetadataElement().isExtractedMetadataElement() || metadata_value_table_entry.isInheritedMetadata()) {
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187 | return false;
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188 | }
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189 |
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190 | return true;
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191 | }
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192 |
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193 |
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194 | /** Determine if the given metadata is common to all selected file nodes. */
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195 | public boolean isCommon(MetadataValueTableEntry metadata_value_table_entry)
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196 | {
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197 | return (file_nodes != null && metadata_value_table_entry.getOccurrences() == file_nodes.length);
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198 | }
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199 |
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200 |
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201 | /** Determine if the given metadata is common to all selected file nodes. */
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202 | public boolean isCommon(int row)
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203 | {
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204 | if (row >= 0 && row < metadata_value_table_entries.size()) {
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205 | return isCommon((MetadataValueTableEntry) metadata_value_table_entries.get(row));
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206 | }
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207 |
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208 | return false;
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209 | }
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210 |
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211 |
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212 | public void rebuild(CollectionTreeNode[] file_nodes)
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213 | {
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214 | this.file_nodes = file_nodes;
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215 | metadata_value_table_entries.clear();
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216 |
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217 | // Collection is in a state of flux
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218 | if (!Gatherer.c_man.ready()) {
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219 | return;
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220 | }
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221 |
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222 | if (file_nodes == null || file_nodes.length == 0) {
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223 | return;
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224 | }
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225 |
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226 | // Create model builder
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227 | MetadataValueTableModelBuilder builder = new MetadataValueTableModelBuilder();
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228 | builder.run();
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229 | }
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230 |
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231 |
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232 | public void setValueAt(Object new_metadata_value, int row, int col)
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233 | {
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234 | MetadataValueTableEntry metadata_value_table_entry = getMetadataValueTableEntry(row);
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235 | if(metadata_value_table_entry == null) {
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236 | System.err.println("\n@@@@@ MetadataValueTableModel.setValueAt(): metadata_value_table_entry is unexpectedly null!\n");
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237 | return;
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238 | }
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239 |
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240 | // If nothing has changed no action is necessary
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241 | String old_metadata_value = metadata_value_table_entry.getFullValue();
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242 | if (new_metadata_value.equals(old_metadata_value)) {
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243 | return;
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244 | }
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245 |
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246 | // Lock the interface so nothing can be changed while the metadata edit is being processed
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247 | Gatherer.g_man.wait(true);
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248 |
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249 |
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250 | // Check for a restricted metadata element
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251 | MetadataElement metadata_element = metadata_value_table_entry.getMetadataElement();
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252 | if (!new_metadata_value.equals("") && metadata_element.isRestricted()) {
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253 | if (metadata_element.getMetadataValueTreeNode((String)new_metadata_value)==null) {
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254 | WarningDialog dialog = new WarningDialog("warning.InvalidMetadata", Dictionary.get("InvalidMetadata.Title"), Dictionary.get("InvalidMetadata.Message"), null, false);
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255 | int dialog_result = dialog.display();
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256 | dialog.dispose();
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257 | Gatherer.g_man.wait(false);
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258 | return;
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259 |
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260 | }
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261 | }
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262 |
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263 | // Metadata value added
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264 | if (old_metadata_value.equals("") && !new_metadata_value.equals("")) {
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265 | // If we're adding metadata to folders display the warning
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266 | if (!file_nodes[0].isLeaf()) {
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267 | WarningDialog dialog = new WarningDialog("warning.DirectoryLevelMetadata", Dictionary.get("DirectoryLevelMetadata.Title"), Dictionary.get("DirectoryLevelMetadata.Message"), null, true);
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268 | int dialog_result = dialog.display();
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269 | dialog.dispose();
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270 | if (dialog_result != JOptionPane.OK_OPTION) {
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271 | Gatherer.g_man.wait(false);
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272 | return;
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273 | }
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274 | }
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275 |
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276 | MetadataValueTreeNode metadata_value_tree_node = metadata_element.addMetadataValue((String) new_metadata_value);
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277 | MetadataValue metadata_value = new MetadataValue(metadata_element, metadata_value_tree_node);
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278 | metadata_value.setIsAccumulatingMetadata(true);
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279 | (new AppendMetadataTask(metadata_value)).run();
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280 | }
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281 |
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282 | // Metadata value removed
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283 | else if (!old_metadata_value.equals("") && new_metadata_value.equals("")) {
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284 | (new RemoveMetadataTask(metadata_value_table_entry)).run();
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285 | }
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286 |
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287 | // Metadata value replaced
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288 | else {
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289 | MetadataValueTreeNode metadata_value_tree_node = metadata_element.addMetadataValue((String) new_metadata_value);
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290 | MetadataValue metadata_value = new MetadataValue(metadata_element, metadata_value_tree_node);
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291 | metadata_value.setIsAccumulatingMetadata(!metadata_value_table_entry.isInheritedMetadata());
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292 | (new ReplaceMetadataTask(metadata_value_table_entry, metadata_value)).run();
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293 | }
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294 | }
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295 |
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296 |
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297 | private class AppendMetadataTask
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298 | // extends Thread
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299 | {
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300 | private MetadataValue metadata_value = null;
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301 |
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302 | private AppendMetadataTask(MetadataValue metadata_value)
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303 | {
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304 | this.metadata_value = metadata_value;
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305 | }
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306 |
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307 | public void run()
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308 | {
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309 | try {
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310 | // Edit metadata.xml files to add the metadata
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311 | MetadataXMLFileManager.addMetadata(file_nodes, metadata_value);
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312 | }
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313 | catch (Exception exception) {
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314 | // We need to catch any exceptions here so the interface is unlocked below
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315 | DebugStream.printStackTrace(exception);
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316 | }
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317 |
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318 | // Operation finished, so turn busy cursor off and unlock interface
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319 | Gatherer.g_man.wait(false);
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320 | }
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321 | }
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322 |
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323 |
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324 | private class ReplaceMetadataTask
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325 | // extends Thread
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326 | {
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327 | private MetadataValueTableEntry selected_metadata_value_table_entry = null;
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328 | private MetadataValue metadata_value = null;
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329 |
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330 | private ReplaceMetadataTask(MetadataValueTableEntry selected_metadata_value_table_entry, MetadataValue metadata_value)
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331 | {
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332 | this.selected_metadata_value_table_entry = selected_metadata_value_table_entry;
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333 | this.metadata_value = metadata_value;
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334 | }
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335 |
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336 | public void run()
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337 | {
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338 | try {
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339 | // Edit metadata.xml files to replace the metadata
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340 | MetadataXMLFileManager.replaceMetadata(file_nodes, selected_metadata_value_table_entry, metadata_value);
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341 | }
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342 | catch (Exception exception) {
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343 | // We need to catch any exceptions here so the interface is unlocked below
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344 | DebugStream.printStackTrace(exception);
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345 | }
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346 |
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347 | // Operation finished, so turn busy cursor off and unlock interface
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348 | Gatherer.g_man.wait(false);
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349 | }
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350 | }
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351 |
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352 |
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353 | private class RemoveMetadataTask
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354 | // extends Thread
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355 | {
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356 | private MetadataValueTableEntry selected_metadata_value_table_entry = null;
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357 |
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358 | private RemoveMetadataTask(MetadataValueTableEntry selected_metadata_value_table_entry)
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359 | {
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360 | this.selected_metadata_value_table_entry = selected_metadata_value_table_entry;
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361 | }
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362 |
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363 | public void run()
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364 | {
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365 | try {
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366 | // Edit metadata.xml files to remove the metadata
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367 | MetadataXMLFileManager.removeMetadata(file_nodes, selected_metadata_value_table_entry);
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368 | }
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369 | catch (Exception exception) {
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370 | // We need to catch any exceptions here so the interface is unlocked below
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371 | DebugStream.printStackTrace(exception);
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372 | }
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373 |
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374 | // Operation finished, so turn busy cursor off and unlock interface
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375 | Gatherer.g_man.wait(false);
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376 | }
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377 | }
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378 |
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379 |
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380 | private class MetadataValueTableModelBuilder
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381 | {
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382 | public void run()
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383 | {
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384 | // System.err.println("Building MetadataValueTableModel...");
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385 |
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386 | // Build a list of MetadataValueTableEntries that represent the metadata asssigned to the selected files
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387 | boolean hid_extracted_metadata = false;
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388 | ArrayList metadata_elements_seen = new ArrayList();
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389 |
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390 | // Process each of the selected files in turn
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391 | for (int i = 0; i < file_nodes.length; i++) {
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392 | File current_file = file_nodes[i].getFile();
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393 |
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394 | // Get the metadata assigned to this file
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395 | ArrayList assigned_metadata = MetadataXMLFileManager.getMetadataAssignedToFile(current_file);
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396 | for (int j = 0; j < assigned_metadata.size(); j++) {
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397 | MetadataValue metadata_value = (MetadataValue) assigned_metadata.get(j);
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398 | MetadataElement metadata_element = metadata_value.getMetadataElement();
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399 |
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400 | // Insert this metadata value into the table, unless it already exists (in which case increment its count)
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401 | insertMetadataValue(metadata_value);
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402 |
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403 | // Remember we have seen this metadata element
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404 | if (metadata_elements_seen.contains(metadata_element) == false) {
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405 | metadata_elements_seen.add(metadata_element);
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406 | }
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407 | }
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408 |
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409 | // Get the extracted metadata for this file, if desired
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410 | if (Configuration.get("general.view_extracted_metadata", Configuration.COLLECTION_SPECIFIC) == true) {
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411 | ArrayList extracted_metadata = DocXMLFileManager.getMetadataExtractedFromFile(current_file);
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412 | for (int k = 0; k < extracted_metadata.size(); k++) {
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413 | MetadataValue metadata_value = (MetadataValue) extracted_metadata.get(k);
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414 |
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415 | // Insert this metadata value into the table, unless it already exists (in which case increment its count)
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416 | insertMetadataValue(metadata_value);
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417 | }
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418 | }
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419 | }
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420 |
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421 | // Make sure each non-extracted metadata element appears in the table (even if blank)
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422 | ArrayList every_metadata_set_element = MetadataSetManager.getEveryMetadataSetElement();
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423 | for (int i = 0; i < every_metadata_set_element.size(); i++) {
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424 | MetadataElement metadata_element = (MetadataElement) every_metadata_set_element.get(i);
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425 |
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426 | // If we haven't seen this metadata element and it isn't extracted, add it now
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427 | if (!metadata_elements_seen.contains(metadata_element) && !metadata_element.isExtractedMetadataElement()) {
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428 | MetadataValueTableEntry metadata_value_table_entry = new MetadataValueTableEntry(metadata_element, new MetadataValueTreeNode(""));
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429 |
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430 | // Blank metadata is common to all selected files (otherwise it wouldn't be blank!)
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431 | metadata_value_table_entry.setOccurrences(file_nodes.length);
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432 |
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433 | // Add it to the table
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434 | insertMetadataValueTableEntry(metadata_value_table_entry);
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435 | }
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436 | }
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437 |
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438 | // If extracted metadata was hidden, display the warning
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439 | if (hid_extracted_metadata) {
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440 | showExtractedMetadataWarning();
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441 | }
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442 | }
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443 |
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444 |
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445 | /** Inserts the new metadata value into the table */
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446 | private int insertMetadataValue(MetadataValue metadata_value)
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447 | {
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448 | return insertMetadataValueTableEntry(new MetadataValueTableEntry(metadata_value));
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449 | }
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450 |
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451 |
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452 | /** Inserts the new metadata value table entry into the table */
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453 | private int insertMetadataValueTableEntry(MetadataValueTableEntry metadata_value_table_entry)
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454 | {
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455 | MetadataElement metadata_element = metadata_value_table_entry.getMetadataElement();
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456 |
|
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457 | // Find the correct place to insert the table entry
|
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458 | for (int i = 0; i < metadata_value_table_entries.size(); i++) {
|
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459 | MetadataValueTableEntry current_metadata_value_table_entry = (MetadataValueTableEntry) metadata_value_table_entries.get(i);
|
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460 | int element_comparison = MetadataSetManager.compareMetadataElements(current_metadata_value_table_entry.getMetadataElement(), metadata_element);
|
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461 |
|
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462 | // We've found the right element, so check if the value already exists
|
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463 | if (element_comparison == 0) {
|
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464 | int value_comparison = current_metadata_value_table_entry.compareTo(metadata_value_table_entry);
|
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465 | if (value_comparison == 0) {
|
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466 | // Entry already exists, so increment count (except for blank entries)
|
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467 | if (!metadata_value_table_entry.getFullValue().equals("")) {
|
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468 | current_metadata_value_table_entry.anotherOccurrence();
|
---|
469 | }
|
---|
470 | return i;
|
---|
471 | }
|
---|
472 | }
|
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473 |
|
---|
474 | // Found insertion point
|
---|
475 | if (element_comparison > 0) {
|
---|
476 | metadata_value_table_entries.add(i, metadata_value_table_entry);
|
---|
477 | fireTableRowsInserted(i, i);
|
---|
478 | return i;
|
---|
479 | }
|
---|
480 | }
|
---|
481 |
|
---|
482 | // Must go at the end of the table
|
---|
483 | metadata_value_table_entries.add(metadata_value_table_entry);
|
---|
484 | fireTableRowsInserted(metadata_value_table_entries.size() - 1, metadata_value_table_entries.size() - 1);
|
---|
485 | return metadata_value_table_entries.size() - 1;
|
---|
486 | }
|
---|
487 |
|
---|
488 |
|
---|
489 | private void showExtractedMetadataWarning()
|
---|
490 | {
|
---|
491 | Runnable task = new Runnable() {
|
---|
492 | public void run() {
|
---|
493 | WarningDialog dialog = new WarningDialog("warning.ExtractedMetadata", Dictionary.get("ExtractedMetadata.Title"), Dictionary.get("ExtractedMetadata.Message"), null, false);
|
---|
494 | dialog.display();
|
---|
495 | dialog.dispose();
|
---|
496 | dialog = null;
|
---|
497 | }
|
---|
498 | };
|
---|
499 | SwingUtilities.invokeLater(task);
|
---|
500 | }
|
---|
501 | }
|
---|
502 | }
|
---|