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1
29 package com.genimen.djeneric.repository.util;
30
31 import java.util.HashMap  ;
32 import java.util.Iterator ;
33
34 import com.genimen.djeneric.language.Messages;
35 import com.genimen.djeneric.repository.DjAssociation;
36 import com.genimen.djeneric.repository.DjDomain;
37 import com.genimen.djeneric.repository.DjExtent;
38 import com.genimen.djeneric.repository.DjList;
39 import com.genimen.djeneric.repository.DjObject;
40 import com.genimen.djeneric.repository.DjProperty;
41 import com.genimen.djeneric.repository.DjRelation;
42 import com.genimen.djeneric.repository.DjUid;
43 import com.genimen.djeneric.repository.exceptions.CatalogException;
44 import com.genimen.djeneric.repository.exceptions.DjenericException;
45 import com.genimen.djeneric.structure.ExtentUsage;
46 import com.genimen.djeneric.structure.RelationUsage;
47 import com.genimen.djeneric.util.DjBase64;
48 import com.genimen.djeneric.util.DjStatusDisplayer;
49
50 public class DjObjectExporter
51 {
52 DjList _exportList = new DjList();
53 DjList _masters = new DjList();
54 HashMap _object2structure = new HashMap ();
55 HashMap _structureKeys = new HashMap ();
56 DjStatusDisplayer _statusDisplayer = null;
57
58 int _currentKey = 1;
59
60 public DjObjectExporter()
61 {
62 }
63
64 public DjObjectExporter(DjObject source)
65 {
66 markForExport(source);
67 }
68
69 public String export() throws DjenericException
70 {
71 StringBuffer result = new StringBuffer (2000);
72
73 result.append("<?xml version=\"1.0\" encoding=\"ISO-8859-1\"?>\n<djenericexport>\n");
74 HashMap uids = new HashMap ();
75 HashMap hitlist = new HashMap ();
76
77 Iterator it = _exportList.iterator();
78 while (it.hasNext())
79 result.append(doExportSingle((DjObject) it.next(), uids, hitlist));
80
81 result.append(writeUids(uids));
82 result.append(writeStructures(_structureKeys));
83 result.append("</djenericexport>");
84 setStatus(Messages.getString("ObjectExporter.ExportDone", String.valueOf(_exportList.size())));
85 return result.toString();
86 }
87
88 public void markForExport(DjObject source)
89 {
90 if (!_exportList.contains(source))
91 {
92 _exportList.add(source);
93 _masters.add(source);
94 }
95 }
96
97 public void markForExport(DjObject source, ExtentUsage usage) throws DjenericException
98 {
99 _masters.add(source);
100 _object2structure.put(source, usage);
101 if (!_structureKeys.containsKey(usage)) _structureKeys.put(usage, new Integer (_currentKey++));
102 doMarkForExport(source, usage);
103 }
104
105 protected void doMarkForExport(DjObject source, ExtentUsage usage) throws DjenericException
106 {
107 if (!_exportList.contains(source))
108 {
109 _exportList.add(source);
110
111 RelationUsage[] rels = usage.getDetailRelations();
112 for (int i = 0; i < rels.length; i++)
113 {
114 DjRelation rel = rels[i].getRelation();
115 DjExtent detailExtent = rels[i].getDetail().getExtent();
116 DjAssociation srcAssoc = source.getDetailAssociationByName(rel.getName());
117
118 DjList details = srcAssoc.getObjects();
119 for (int d = 0; d < details.size(); d++)
120 {
121 DjObject detailObject = details.getDjenericObjectAt(d);
122 if (!detailObject.isInstanceOf(detailExtent)) continue;
124
125 doMarkForExport(detailObject, rels[i].getDetail());
126 }
127 }
128 }
129 }
130
131 public void clear()
132 {
133 _exportList = new DjList();
134 _masters = new DjList();
135 _object2structure = new HashMap ();
136 _structureKeys = new HashMap ();
137 _currentKey = 1;
138 }
139
140 protected String doExportSingle(DjObject source, HashMap uids, HashMap hitlist) throws DjenericException
141 {
142 if (hitlist.containsKey(source)) return "";
143 hitlist.put(source, source);
144
145 StringBuffer result = new StringBuffer (2000);
146
147 result.append(writeObject(source, uids));
148 return result.toString();
149 }
150
151 protected String writeUids(HashMap uids) throws CatalogException
152 {
153 StringBuffer result = new StringBuffer (1000);
154 Iterator it = uids.keySet().iterator();
155 while (it.hasNext())
156 {
157 Object object = it.next();
158 DjUid uid = (DjUid) uids.get(object);
159 if (uid.getPropertyCount() == 0) throw new CatalogException(Messages.getString("DjPersistenceManager.NoUid", uid
160 .getExtent().getName()));
161 result.append(uid.toString(2));
162 result.append("\n");
163 }
164 return result.toString();
165 }
166
167 protected String writeStructures(HashMap structures)
168 {
169 StringBuffer result = new StringBuffer (1000);
170 Iterator it = structures.keySet().iterator();
171 while (it.hasNext())
172 {
173 ExtentUsage usg = (ExtentUsage) it.next();
174 result.append(" <structure extent=\"" + usg.getExtent().getName() + "\" id=\"" + _structureKeys.get(usg)
175 + "\">\n");
176 result.append(usg.getRelationsAsXml(4));
177 result.append(" </structure>\n");
178 }
179 return result.toString();
180 }
181
182 protected String writeObject(DjObject source, HashMap uids) throws DjenericException
183 {
184 setStatus(Messages
185 .getString("ObjectExporter.ExportExtent", source.getExtent().getNameSingular(), source.toString()));
186 if (source.getExtent().hasUidDefined())
187 {
188 uids.put(source, source.getUID());
189 }
190
191 StringBuffer result = new StringBuffer (1000);
192 result.append(" <object extent=\"" + source.getExtent().getName() + "\" id=\"" + source.getObjectId() + "\"");
193 if (_masters.contains(source))
194 {
195 if (!source.getExtent().hasUidDefined()) throw new CatalogException(Messages
196 .getString("DjPersistenceManager.NoUid", source.getExtent().getName()));
197 result.append(" rootobject=\"true\"");
198 }
199 ExtentUsage usg = (ExtentUsage) _object2structure.get(source);
200 if (usg != null) result.append(" structure=\"" + _structureKeys.get(usg) + "\"");
201
202 result.append(">\n");
203 result.append(writeSimpleProperties(source));
204 result.append(writeFKProperties(source, uids));
205 result.append(writeTextProperties(source));
206 result.append(" </object>\n");
207 return result.toString();
208 }
209
210 protected String writeSimpleProperties(DjObject source) throws DjenericException
211 {
212 StringBuffer result = new StringBuffer (1000);
213 DjExtent extent = source.getExtent();
214
215 for (int i = 0; i < extent.getPropertyCount(); i++)
216 {
217 DjProperty prop = extent.getProperty(i);
218 if (isSimpleProperty(prop))
219 {
220 if (prop == extent.getIdProperty()) continue;
221
222 String value = source.getString(prop.getName());
223 if (value != null) result.append(" <property name=\"" + prop.getName() + "\" type=\"simple\">" + value
224 + "</property>\n");
225 }
226 }
227 return result.toString();
228 }
229
230 protected String writeFKProperties(DjObject source, HashMap uids) throws DjenericException
231 {
232 StringBuffer result = new StringBuffer (1000);
233 DjExtent extent = source.getExtent();
234
235 for (int i = 0; i < extent.getPropertyCount(); i++)
236 {
237 DjProperty prop = extent.getProperty(i);
238 if (isFKProperty(prop))
239 {
240 DjObject master = (DjObject) source.get(prop.getName());
241 if (master != null)
242 {
243 DjUid uid = master.getUID();
244 result.append(" <property name=\"" + prop.getName() + "\" type=\"uidptr\">" + uid.getAssociatedObjectid()
245 + "</property>\n");
246 uids.put(master, uid);
247 }
248 }
249 }
250 return result.toString();
251 }
252
253 protected String writeTextProperties(DjObject source) throws DjenericException
254 {
255 StringBuffer result = new StringBuffer (1000);
256 DjExtent extent = source.getExtent();
257
258 for (int i = 0; i < extent.getPropertyCount(); i++)
259 {
260 DjProperty prop = extent.getProperty(i);
261 if (isTextProperty(prop))
262 {
263 String value = source.getString(prop.getName());
264 if (value != null) result.append(" <property name=\"" + prop.getName() + "\" type=\"text\"><![CDATA["
265 + value + "]]></property>\n");
266 }
267 }
268 return result.toString();
269 }
270
271 protected String writeByteProperties(DjObject source, DjExtent extent) throws DjenericException
272 {
273 StringBuffer result = new StringBuffer (1000);
274
275 for (int i = 0; i < extent.getPropertyCount(); i++)
276 {
277 DjProperty prop = extent.getProperty(i);
278 if (isByteProperty(prop))
279 {
280 byte[] bytes = source.getBytes(prop.getName());
281 if (bytes != null)
282 {
283 String value = DjBase64.encode(source.getBytes(prop.getName()));
284 if (value != null) result.append(" <property name=\"" + prop.getName() + "\" type=\"byte\"><![CDATA["
285 + value + "]]></property>\n");
286 }
287 }
288 }
289 return result.toString();
290 }
291
292 protected boolean isSimpleProperty(DjProperty prop)
293 {
294 if (prop.getType() instanceof DjDomain)
295 {
296 return prop.getTypeCode() == DjDomain.BIGDECIMAL_TYPE || prop.getTypeCode() == DjDomain.DATE_TYPE
297 || prop.getTypeCode() == DjDomain.INT_TYPE || prop.getTypeCode() == DjDomain.LONG_TYPE;
298 }
299 return false;
300 }
301
302 protected boolean isByteProperty(DjProperty prop)
303 {
304 if (prop.getType() instanceof DjDomain)
305 {
306 return prop.getTypeCode() == DjDomain.BYTE_TYPE;
307 }
308 return false;
309 }
310
311 protected boolean isFKProperty(DjProperty prop)
312 {
313 return prop.getType() instanceof DjExtent;
314 }
315
316 protected boolean isTextProperty(DjProperty prop)
317 {
318 return !isSimpleProperty(prop) && !isFKProperty(prop) && !isByteProperty(prop);
319 }
320
321 protected void setStatus(String msg)
322 {
323 if (_statusDisplayer != null) _statusDisplayer.setStatusMessageNow(msg, true);
324 }
325
326 public DjStatusDisplayer getStatusDisplayer()
327 {
328 return _statusDisplayer;
329 }
330
331 public void setStatusDisplayer(DjStatusDisplayer statusDisplayer)
332 {
333 _statusDisplayer = statusDisplayer;
334 }
335
336 } |
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