source: other-projects/FileTransfer-WebSocketPair/testGXTWithGreenstone/src/org/greenstone/gatherer/gems/MetadataSetInfo.java@ 33053

Last change on this file since 33053 was 33053, checked in by ak19, 5 years ago

I still had some stuff of Nathan Kelly's (FileTransfer-WebSocketPair) sitting on my USB. Had already commited the Themes folder at the time, 2 years back. Not sure if he wanted this additional folder commited. But I didn't want to delete it and decided it will be better off on SVN. When we use his project, if we find we didn't need this test folder, we can remove it from svn then.
File size: 9.7 KB
Line 
1/**
2 *#########################################################################
3 *
4 * A component of the Gatherer application, part of the Greenstone digital
5 * library suite from the New Zealand Digital Library Project at the
6 * University of Waikato, New Zealand.
7 *
8 * <BR><BR>
9 *
10 * Author: Shaoqun Wu, Greenstone Digital Library, University of Waikato
11 *
12 * <BR><BR>
13 *
14 * Copyright (C) 2006 New Zealand Digital Library Project
15 *
16 * <BR><BR>
17 *
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
22 *
23 * <BR><BR>
24 *
25 * This program is distributed in the hope that it will be useful,
26 * but WITHOUT ANY WARRANTY; without even the implied warranty of
27 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 * GNU General Public License for more details.
29 *
30 * <BR><BR>
31 *
32 * You should have received a copy of the GNU General Public License
33 * along with this program; if not, write to the Free Software
34 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
35 *########################################################################
36 */
37package org.greenstone.gatherer.gems;
38
39import org.apache.xerces.dom.*;// for new Documents
40import org.w3c.dom.Document;
41import org.w3c.dom.DocumentType;
42import org.w3c.dom.Element;
43import org.w3c.dom.Node;
44import org.w3c.dom.Attr;
45import org.w3c.dom.NamedNodeMap;
46import org.w3c.dom.NodeList;
47
48import java.util.HashMap;
49import java.util.ArrayList;
50
51import org.greenstone.gatherer.util.XMLTools;
52
53/**
54 * @author Shaoqun Wu, Greenstone Digital Library, University of Waikato
55 */
56public class MetadataSetInfo
57 extends AttributeContainer
58{
59
60 private String file_path="";
61
62 private static ArrayList listeners = new ArrayList();
63
64 private static MetadataSetModel metadata_model;
65
66 private String current_language = GEMSConstants.DEFAULT_LANGUAGE;
67
68 private boolean isNew = false;
69
70 public MetadataSetInfo(){
71 super(GEMSConstants.SET_REQUIRED_ATTRIBUTES, GEMSConstants.SET_LANG_DEPEND_ATTR_NAMES);
72 }
73
74 public boolean isNamespaceAlreadyUsed(String namespace){
75 if(metadata_model != null) {
76 return metadata_model.getMetadataSetManager().isNamespaceAlreadyUsed(namespace);
77 }
78 return false;
79 }
80
81 public void setNew(boolean isNew){
82 this.isNew = isNew;
83 }
84
85 public boolean isNew(){
86 return isNew;
87 }
88
89 public Document getMetadataSetDocument(){
90 return metadata_model.getMetadataSetDocument();
91 }
92
93 public MetadataSetModel getMetadataSetModel(){
94 return metadata_model;
95 }
96
97 public void setMetadataSetModel(MetadataSetModel model){
98 metadata_model = model;
99 }
100
101
102 public String getMetadataSetName(){
103 return getMetadataSetName(getCurrentLanguage());
104 }
105
106 public String getMetadataSetName(String lang){
107 Attribute attr = getAttributeByNameAndLanguage(GEMSConstants.NAME_ATTRIBUTE,lang);
108 if (attr != null) {
109 return attr.getValue();
110 }
111 else {
112 return GEMSConstants.UNKNOWN_NAME;
113 }
114 }
115
116 public void setMetadataSetName(String name){
117 setMetadataSetName(name, getCurrentLanguage());
118 }
119
120 public void setMetadataSetName(String name,String lang){
121 Attribute attr = getAttributeByNameAndLanguage(GEMSConstants.NAME_ATTRIBUTE,lang);
122 if (attr != null){
123 attr.setValue(name);
124 }
125 else {
126 attr = new Attribute(GEMSConstants.NAME_ATTRIBUTE, name, lang, true);
127 language_dependent_attributes.add(attr);
128 }
129 }
130
131
132
133 public String getMetadataSetDescription(){
134 return getMetadataSetDescription(getCurrentLanguage());
135 }
136
137 public String getMetadataSetDescription(String lang){
138 Attribute attr = getAttributeByNameAndLanguage(GEMSConstants.DESCRIPTION_ATTRIBUTE,lang);
139 if (attr != null) {
140 return attr.getValue();
141 }
142 else {
143 return "";
144 }
145 }
146
147 public void setMetadataSetDescription(String desc) {
148 setMetadataSetDescription(desc, getCurrentLanguage());
149 }
150
151 public void setMetadataSetDescription(String desc, String lang) {
152 Attribute attr = getAttributeByNameAndLanguage(GEMSConstants.DESCRIPTION_ATTRIBUTE,lang);
153 if (attr != null){
154 attr.setValue(desc);
155 }
156 else {
157 attr = new Attribute(GEMSConstants.DESCRIPTION_ATTRIBUTE, desc, lang, true);
158 language_dependent_attributes.add(attr);
159 }
160 }
161
162 public String getCurrentLanguage(){
163 return current_language;
164 }
165
166 public void setCurrentLanguage(String lang){
167 current_language = lang;
168 }
169
170 public String getNamespace(){
171 Attribute attr = getAttributeByName(GEMSConstants.NAMESPACE_ATTRIBUTE);
172 if (attr != null){
173 return attr.getValue();
174 }
175 else{
176 return "";
177 }
178 }
179
180 public void setNamespace(String namespace){
181 Attribute attr = getAttributeByName(GEMSConstants.NAMESPACE_ATTRIBUTE);
182 if (attr != null){
183 attr.setValue(namespace);
184 }
185 else {
186 attr = new Attribute(GEMSConstants.NAMESPACE_ATTRIBUTE, namespace, true);
187 attributes.add(attr);
188 }
189
190 }
191
192
193 public String getFilePath(){
194 return file_path;
195 }
196
197
198 public void infoChanged(){
199 metadata_model.valueChanged();
200 }
201
202 public void setFilePath(String path){
203 file_path = path;
204 }
205
206
207 public void addMetadataSetListener(MetadataSetListener msl){
208 if (!listeners.contains(msl))
209 listeners.add(msl);
210 }
211
212 public void removeMetadataSetListener(MetadataSetListener msl){
213 listeners.remove(msl);
214 }
215
216 public void removeAllMetadataSetListeners(){
217 listeners.clear();
218 }
219
220 public void deleteMetadataSet(){
221 metadata_model.getMetadataSetManager().deleteMetadataSet(this);
222
223 if (metadata_model.getMetadataSetInfo() != null
224 && metadata_model.getMetadataSetInfo().getFilePath().equals(this.getFilePath())){
225 metadata_model.metadataSetDeleted();
226 MetadataSetEvent mse = new MetadataSetEvent(null);
227 for(int i=0;i<listeners.size();i++){
228 MetadataSetListener msl = (MetadataSetListener) listeners.get(i);
229 msl.metadataSetChanged(mse);
230 }
231 }
232 }
233
234 public void notifyListeners(){
235 MetadataSetEvent mse = new MetadataSetEvent(this);
236 for(int i=0;i<listeners.size();i++){
237 MetadataSetListener msl = (MetadataSetListener) listeners.get(i);
238 msl.metadataSetChanged(mse);
239 }
240 }
241
242 public void save(){
243 Document doc = metadata_model.getMetadataSetDocument();
244
245 //new metadata set
246 if (doc == null){
247 doc = new DocumentImpl();
248 DocumentType docType = new DocumentTypeImpl((DocumentImpl)doc,GEMSConstants.MATADATASET_NAME,null,GEMSConstants.SYSTEM_ID);
249 doc.appendChild(doc.createElement(GEMSConstants.METADATASET_ELEMENT));
250 doc.appendChild(docType);
251 metadata_model.setMetadataSetDocument(doc);
252 }
253
254 Element doc_element = doc.getDocumentElement();
255 //remove all attributes
256 NamedNodeMap attrs = doc.getDocumentElement().getAttributes();
257 for (int i=0;i<attrs.getLength();i++){
258 Attr item = (Attr)attrs.item(i);
259 doc_element.removeAttribute(item.getName());
260 }
261
262 //add attributes
263 for (int i=0;i<attributes.size();i++){
264 Attribute attr = (Attribute)attributes.get(i);
265 if (attr.getName() == null || attr.getName().trim().equals("")) continue;
266 doc_element.setAttribute(attr.getName(),attr.getValue());
267 }
268
269 //remove all language dependent name and description elements
270 NodeList setLanguages = doc_element.getElementsByTagName(GEMSConstants.SET_LANGUAGE_ELEMENT);
271
272 for (int i=setLanguages.getLength()-1;i>=0;--i){
273 Node set_language = setLanguages.item(i);
274 doc_element.removeChild(set_language);
275 }
276
277 ArrayList names = XMLTools.getChildElementsByTagName(doc_element,GEMSConstants.NAME_ELEMENT);
278 for(int i=0;i< names.size();i++){
279 Element name_element = (Element)names.get(i);
280 doc_element.removeChild(name_element);
281 }
282
283 ArrayList deses = XMLTools.getChildElementsByTagName(doc_element,GEMSConstants.DESCRIPTION_ELEMENT);
284 for(int i=0;i< deses.size();i++){
285 Element des_element = (Element)deses.get(i);
286 doc_element.removeChild(des_element);
287 }
288
289 Node first_child = doc_element.getFirstChild();
290
291 Node previous_element = null;
292
293 //add setLanguage elements
294 ArrayList langs = getAllLanguages();
295 for (int i=0;i<langs.size();i++){
296 String lang = (String)langs.get(i);
297 Attribute name = getAttributeByNameAndLanguage(GEMSConstants.NAME_ATTRIBUTE,lang);
298 if (name !=null){
299 Element set_element = doc.createElement(GEMSConstants.SET_LANGUAGE_ELEMENT);
300 set_element.setAttribute(GEMSConstants.CODE_ATTRIBUTE,lang);
301 Element name_element = doc.createElement(GEMSConstants.NAME_ELEMENT);
302 name_element.appendChild(doc.createTextNode(name.getValue()));
303 set_element.appendChild(name_element);
304 Attribute des = getAttributeByNameAndLanguage(GEMSConstants.DESCRIPTION_ATTRIBUTE,lang);
305 if (des !=null){
306 Element des_element = doc.createElement(GEMSConstants.DESCRIPTION_ELEMENT);
307 des_element.appendChild(doc.createTextNode(des.getValue()));
308 set_element.appendChild(des_element);
309 }
310
311 if (first_child == null){
312
313 if (previous_element !=null && previous_element.getNextSibling() !=null){
314 doc_element.insertBefore(set_element,previous_element.getNextSibling());
315 }
316 else{
317 doc_element.appendChild(set_element);
318 }
319 }
320 else {
321 doc_element.insertBefore(set_element,first_child);
322 first_child = null;
323 previous_element = set_element;
324 }
325 }
326 }
327
328
329 }
330
331
332
333}
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