svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / fmap / dal / feature / impl / DefaultForeingKey.java @ 44304
History | View | Annotate | Download (14.8 KB)
1 |
package org.gvsig.fmap.dal.feature.impl; |
---|---|
2 |
|
3 |
import org.gvsig.fmap.dal.feature.EditableForeingKey; |
4 |
import org.gvsig.fmap.dal.feature.ForeingKey; |
5 |
import java.util.List; |
6 |
import java.util.Objects; |
7 |
import org.apache.commons.lang3.StringUtils; |
8 |
import org.gvsig.expressionevaluator.Expression; |
9 |
import org.gvsig.expressionevaluator.ExpressionBuilder; |
10 |
import org.gvsig.expressionevaluator.ExpressionUtils; |
11 |
import org.gvsig.expressionevaluator.SymbolTable; |
12 |
import org.gvsig.fmap.dal.DALLocator; |
13 |
import org.gvsig.fmap.dal.DataManager; |
14 |
import org.gvsig.fmap.dal.StoresRepository; |
15 |
import org.gvsig.fmap.dal.exception.DataException; |
16 |
import org.gvsig.fmap.dal.expressionevaluator.FeatureSymbolTable; |
17 |
import org.gvsig.fmap.dal.feature.Feature; |
18 |
import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
19 |
import org.gvsig.fmap.dal.feature.FeatureQuery; |
20 |
import org.gvsig.fmap.dal.feature.FeatureStore; |
21 |
import org.gvsig.fmap.dal.feature.FeatureType; |
22 |
import org.gvsig.tools.ToolsLocator; |
23 |
import org.gvsig.tools.dispose.DisposeUtils; |
24 |
import org.gvsig.tools.dynobject.DynObjectValueItem; |
25 |
import org.gvsig.tools.dynobject.DynStruct; |
26 |
import org.gvsig.tools.persistence.PersistenceManager; |
27 |
import org.gvsig.tools.persistence.Persistent; |
28 |
import org.gvsig.tools.persistence.PersistentState; |
29 |
import org.gvsig.tools.persistence.exception.PersistenceException; |
30 |
import org.slf4j.Logger; |
31 |
import org.slf4j.LoggerFactory; |
32 |
|
33 |
/**
|
34 |
*
|
35 |
* @author jjdelcerro
|
36 |
*/
|
37 |
@SuppressWarnings("UseSpecificCatch") |
38 |
public class DefaultForeingKey implements Persistent, ForeingKey, EditableForeingKey, org.gvsig.tools.lang.Cloneable { |
39 |
|
40 |
private static final Logger LOGGER = LoggerFactory.getLogger(DefaultForeingKey.class); |
41 |
|
42 |
private class DefaultContextForeingKey implements ContextForeingKey { |
43 |
|
44 |
private FeatureStore featureStore = null; |
45 |
private StoresRepository storesRepository = null; |
46 |
private Expression labelExpression; |
47 |
private SymbolTable symbolTable;
|
48 |
private FeatureSymbolTable featureSymbolTable;
|
49 |
private int refs; |
50 |
|
51 |
public DefaultContextForeingKey() {
|
52 |
this.refs = 1; |
53 |
} |
54 |
|
55 |
public void addRef() { |
56 |
this.refs++;
|
57 |
} |
58 |
|
59 |
public void relese() { |
60 |
this.refs--;
|
61 |
} |
62 |
|
63 |
@Override
|
64 |
public void dispose() { |
65 |
DisposeUtils.disposeQuietly(featureStore); |
66 |
this.featureStore = null; |
67 |
this.storesRepository = null; |
68 |
this.labelExpression = null; |
69 |
this.symbolTable = null; |
70 |
this.featureSymbolTable = null; |
71 |
} |
72 |
|
73 |
@Override
|
74 |
public StoresRepository getStoresRepository() {
|
75 |
if (this.storesRepository == null) { |
76 |
FeatureStore store = descriptor.getStore(); |
77 |
if (store == null) { |
78 |
this.storesRepository = DALLocator.getDataManager().getStoresRepository();
|
79 |
|
80 |
} else {
|
81 |
this.storesRepository = store.getStoresRepository();
|
82 |
} |
83 |
} |
84 |
return this.storesRepository; |
85 |
} |
86 |
|
87 |
@Override
|
88 |
public FeatureStore getFeatureStore() {
|
89 |
if (this.featureStore == null) { |
90 |
StoresRepository repository = this.getStoresRepository();
|
91 |
this.featureStore = (FeatureStore) repository.getStore(tableName);
|
92 |
if (this.featureStore == null) { |
93 |
LOGGER.warn("Can't locate store '" + tableName + "' to get available values of field '" + descriptor.getName() + "'."); |
94 |
return null; |
95 |
} |
96 |
} |
97 |
return this.featureStore; |
98 |
} |
99 |
|
100 |
@Override
|
101 |
public Expression getLabelExpression() { |
102 |
if (this.labelExpression == null) { |
103 |
if (StringUtils.isBlank(labelFormula)) {
|
104 |
return null; |
105 |
} |
106 |
this.labelExpression = ExpressionUtils.createExpression(labelFormula);
|
107 |
} |
108 |
return this.labelExpression; |
109 |
} |
110 |
|
111 |
@Override
|
112 |
public FeatureSymbolTable getFeatureSymbolTable() {
|
113 |
if (this.featureSymbolTable == null) { |
114 |
DataManager dataManager = DALLocator.getDataManager(); |
115 |
this.featureSymbolTable = dataManager.createFeatureSymbolTable();
|
116 |
this.symbolTable = this.featureSymbolTable.createParent(); |
117 |
} |
118 |
return this.featureSymbolTable; |
119 |
} |
120 |
|
121 |
@Override
|
122 |
public SymbolTable getSymbolTable() {
|
123 |
if (this.symbolTable == null) { |
124 |
DataManager dataManager = DALLocator.getDataManager(); |
125 |
this.featureSymbolTable = dataManager.createFeatureSymbolTable();
|
126 |
this.symbolTable = this.featureSymbolTable.createParent(); |
127 |
} |
128 |
return this.symbolTable; |
129 |
} |
130 |
} |
131 |
|
132 |
private boolean foreingKey; |
133 |
private boolean selectable; |
134 |
private String labelFormula; |
135 |
private String tableName; |
136 |
private String codeName; |
137 |
|
138 |
private FeatureAttributeDescriptor descriptor;
|
139 |
|
140 |
public DefaultForeingKey() {
|
141 |
|
142 |
} |
143 |
|
144 |
public void setDescriptor(FeatureAttributeDescriptor descriptor) { |
145 |
this.descriptor = descriptor;
|
146 |
} |
147 |
|
148 |
@Override
|
149 |
public boolean isSelectable() { |
150 |
return this.selectable; |
151 |
} |
152 |
|
153 |
@Override
|
154 |
public void setSelectable(boolean selectable) { |
155 |
this.selectable = selectable;
|
156 |
} |
157 |
|
158 |
@Override
|
159 |
public boolean isForeingKey() { |
160 |
return this.foreingKey; |
161 |
} |
162 |
|
163 |
@Override
|
164 |
public void setForeingKey(boolean foreingKey) { |
165 |
this.foreingKey = foreingKey;
|
166 |
} |
167 |
|
168 |
@Override
|
169 |
public String getLabelFormula() { |
170 |
return this.labelFormula; |
171 |
} |
172 |
|
173 |
@Override
|
174 |
public void setLabelFormula(String labelFormula) { |
175 |
this.labelFormula = labelFormula;
|
176 |
} |
177 |
|
178 |
@Override
|
179 |
public String getCodeName() { |
180 |
return this.codeName; |
181 |
} |
182 |
|
183 |
@Override
|
184 |
public void setCodeName(String codeName) { |
185 |
this.codeName = codeName;
|
186 |
} |
187 |
|
188 |
@Override
|
189 |
public String getTableName() { |
190 |
return this.tableName; |
191 |
} |
192 |
|
193 |
@Override
|
194 |
public void setTableName(String tableName) { |
195 |
this.tableName = tableName;
|
196 |
} |
197 |
|
198 |
@Override
|
199 |
public boolean isEmpty() { |
200 |
if (!this.foreingKey |
201 |
&& !this.selectable
|
202 |
&& StringUtils.isBlank(this.tableName)
|
203 |
&& StringUtils.isBlank(this.codeName)
|
204 |
&& StringUtils.isBlank(this.labelFormula)) {
|
205 |
return true; |
206 |
} |
207 |
return false; |
208 |
} |
209 |
|
210 |
@Override
|
211 |
public void clean() { |
212 |
this.foreingKey = false; |
213 |
this.selectable = false; |
214 |
this.tableName = null; |
215 |
this.codeName = null; |
216 |
this.labelFormula = null; |
217 |
} |
218 |
|
219 |
private void disposeIfLocalContext(ContextForeingKey context) { |
220 |
DefaultContextForeingKey c = (DefaultContextForeingKey) context; |
221 |
c.relese(); |
222 |
if( c.refs == 0 ) { |
223 |
context.dispose(); |
224 |
} |
225 |
} |
226 |
|
227 |
private ContextForeingKey createLocalContextIfNull(ContextForeingKey context) {
|
228 |
if (context == null) { |
229 |
return new DefaultContextForeingKey(); |
230 |
} |
231 |
DefaultContextForeingKey c = (DefaultContextForeingKey) context; |
232 |
c.addRef(); |
233 |
return c;
|
234 |
} |
235 |
|
236 |
@Override
|
237 |
public ContextForeingKey createContext() {
|
238 |
return new DefaultContextForeingKey(); |
239 |
} |
240 |
|
241 |
@Override
|
242 |
public StoresRepository getStoresRepository(ContextForeingKey context) {
|
243 |
context = createLocalContextIfNull(context); |
244 |
try {
|
245 |
return context.getStoresRepository();
|
246 |
} finally {
|
247 |
disposeIfLocalContext(context); |
248 |
} |
249 |
} |
250 |
|
251 |
@Override
|
252 |
public FeatureStore getFeatureStore(ContextForeingKey context) {
|
253 |
context = createLocalContextIfNull(context); |
254 |
try {
|
255 |
return context.getFeatureStore();
|
256 |
} finally {
|
257 |
disposeIfLocalContext(context); |
258 |
} |
259 |
} |
260 |
|
261 |
@Override
|
262 |
public FeatureType getFeatureType(ContextForeingKey context) {
|
263 |
context = createLocalContextIfNull(context); |
264 |
FeatureStore store = context.getFeatureStore(); |
265 |
if (store == null) { |
266 |
return null; |
267 |
} |
268 |
try {
|
269 |
return store.getDefaultFeatureType();
|
270 |
} catch (DataException ex) {
|
271 |
return null; |
272 |
} finally {
|
273 |
disposeIfLocalContext(context); |
274 |
} |
275 |
} |
276 |
|
277 |
@Override
|
278 |
public List<Feature> getFeatures(ContextForeingKey context) { |
279 |
context = createLocalContextIfNull(context); |
280 |
FeatureStore store = context.getFeatureStore(); |
281 |
if (store == null) { |
282 |
return null; |
283 |
} |
284 |
try {
|
285 |
return store.getFeatures();
|
286 |
} finally {
|
287 |
disposeIfLocalContext(context); |
288 |
} |
289 |
} |
290 |
|
291 |
@Override
|
292 |
public Object getCode(ContextForeingKey context, Feature feature) { |
293 |
// context = createLocalContextIfNull(context);
|
294 |
try {
|
295 |
return feature.get(codeName);
|
296 |
} finally {
|
297 |
// disposeIfLocalContext(context);
|
298 |
} |
299 |
} |
300 |
|
301 |
@Override
|
302 |
public FeatureQuery getQuery(ContextForeingKey context, Object codeValue) { |
303 |
context = createLocalContextIfNull(context); |
304 |
try {
|
305 |
ExpressionBuilder builder = ExpressionUtils.createExpressionBuilder(); |
306 |
FeatureStore store = context.getFeatureStore(); |
307 |
FeatureQuery query = store.createFeatureQuery(); |
308 |
query.setFilter(builder.eq( |
309 |
builder.variable(codeName), |
310 |
builder.constant(codeValue) |
311 |
).toString() |
312 |
); |
313 |
query.retrievesAllAttributes(); |
314 |
return query;
|
315 |
} finally {
|
316 |
disposeIfLocalContext(context); |
317 |
} |
318 |
} |
319 |
|
320 |
@Override
|
321 |
public Feature getFeature(ContextForeingKey context, Object codeValue) { |
322 |
context = createLocalContextIfNull(context); |
323 |
try {
|
324 |
FeatureStore store = context.getFeatureStore(); |
325 |
if (store == null) { |
326 |
return null; |
327 |
} |
328 |
FeatureQuery query = this.getQuery(context, codeValue);
|
329 |
Feature feature = store.findFirst(query); |
330 |
return feature;
|
331 |
} catch (DataException ex) {
|
332 |
return null; |
333 |
} finally {
|
334 |
disposeIfLocalContext(context); |
335 |
} |
336 |
} |
337 |
|
338 |
@Override
|
339 |
public String getLabel(ContextForeingKey context, Object codeValue) { |
340 |
context = createLocalContextIfNull(context); |
341 |
try {
|
342 |
Feature feature = this.getFeature(context, codeValue);
|
343 |
if (feature == null) { |
344 |
return null; |
345 |
} |
346 |
return getLabel(context, feature);
|
347 |
} finally {
|
348 |
disposeIfLocalContext(context); |
349 |
} |
350 |
} |
351 |
|
352 |
@Override
|
353 |
public Expression getLabelExpression(ContextForeingKey context) { |
354 |
context = createLocalContextIfNull(context); |
355 |
try {
|
356 |
return context.getLabelExpression();
|
357 |
} finally {
|
358 |
disposeIfLocalContext(context); |
359 |
} |
360 |
} |
361 |
|
362 |
@Override
|
363 |
public String getLabel(ContextForeingKey context, Feature feature) { |
364 |
if (feature == null) { |
365 |
return null; |
366 |
} |
367 |
context = createLocalContextIfNull(context); |
368 |
try {
|
369 |
Expression labelExpression = context.getLabelExpression();
|
370 |
if (labelExpression == null) { |
371 |
return feature.toString();
|
372 |
} |
373 |
context.getFeatureSymbolTable().setFeature(feature); |
374 |
Object x = labelExpression.execute(context.getSymbolTable());
|
375 |
if (x == null) { |
376 |
return null; |
377 |
} |
378 |
return x.toString();
|
379 |
} finally {
|
380 |
disposeIfLocalContext(context); |
381 |
} |
382 |
} |
383 |
|
384 |
@Override
|
385 |
public DynObjectValueItem[] getAvailableValues(ContextForeingKey context) { |
386 |
if (!this.isSelectable()) { |
387 |
return null; |
388 |
} |
389 |
context = createLocalContextIfNull(context); |
390 |
try {
|
391 |
Expression labelExpression = context.getLabelExpression();
|
392 |
FeatureStore store = context.getFeatureStore(); |
393 |
if (store == null) { |
394 |
return null; |
395 |
} |
396 |
|
397 |
int count = (int) store.getFeatureCount(); |
398 |
DynObjectValueItem[] values = new DynObjectValueItem[Math.min(count, MAX_AVAILABLE_VALUES)]; |
399 |
int n = 0; |
400 |
for (Feature feature : store.getFeatureSet()) {
|
401 |
Object code = feature.get(codeName);
|
402 |
Object value;
|
403 |
if (labelExpression == null) { |
404 |
value = code; |
405 |
} else {
|
406 |
context.getFeatureSymbolTable().setFeature(feature); |
407 |
value = labelExpression.execute(context.getSymbolTable()); |
408 |
} |
409 |
values[n++] = new DynObjectValueItem(code, Objects.toString(value, Objects.toString(code, "##ERROR##"))); |
410 |
if( n>=MAX_AVAILABLE_VALUES ) {
|
411 |
break;
|
412 |
} |
413 |
} |
414 |
return values;
|
415 |
} catch (Exception ex) { |
416 |
LOGGER.warn("Can't get values from table '" + tableName + "' of field.", ex); |
417 |
} finally {
|
418 |
disposeIfLocalContext(context); |
419 |
} |
420 |
return null; |
421 |
} |
422 |
|
423 |
@Override
|
424 |
public void loadFromState(PersistentState state) |
425 |
throws PersistenceException {
|
426 |
foreingKey = state.getBoolean("foreingKey");
|
427 |
selectable = state.getBoolean("selectable");
|
428 |
labelFormula = state.getString("labelFormula");
|
429 |
codeName = state.getString("codeName");
|
430 |
tableName = state.getString("tableName");
|
431 |
} |
432 |
|
433 |
@Override
|
434 |
public void saveToState(PersistentState state) throws PersistenceException { |
435 |
state.set("foreingKey", foreingKey);
|
436 |
state.set("selectable", selectable);
|
437 |
state.set("labelFormula", labelFormula);
|
438 |
state.set("codeName", codeName);
|
439 |
state.set("tableName", tableName);
|
440 |
} |
441 |
|
442 |
private static final String FOREINGKEY_PERSISTENCE_DEFINITION_NAME = "ForeingKey"; |
443 |
|
444 |
public static void registerPersistenceDefinition() { |
445 |
PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
446 |
|
447 |
if (manager.getDefinition(FOREINGKEY_PERSISTENCE_DEFINITION_NAME)
|
448 |
== null) {
|
449 |
DynStruct definition = manager.addDefinition(DefaultForeingKey.class, |
450 |
FOREINGKEY_PERSISTENCE_DEFINITION_NAME, |
451 |
FOREINGKEY_PERSISTENCE_DEFINITION_NAME |
452 |
+ " persistent definition",
|
453 |
null,
|
454 |
null
|
455 |
); |
456 |
definition.addDynFieldBoolean("foreingKey");
|
457 |
definition.addDynFieldBoolean("selectable");
|
458 |
definition.addDynFieldString("LabelFormula");
|
459 |
definition.addDynFieldString("codeName");
|
460 |
definition.addDynFieldString("tableName");
|
461 |
} |
462 |
} |
463 |
|
464 |
@Override
|
465 |
public ForeingKey clone() throws CloneNotSupportedException { |
466 |
DefaultForeingKey other = (DefaultForeingKey) super.clone();
|
467 |
return other;
|
468 |
} |
469 |
|
470 |
} |