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 / DefaultFeatureSelection.java @ 40767
History | View | Annotate | Download (16.3 KB)
1 |
/**
|
---|---|
2 |
* gvSIG. Desktop Geographic Information System.
|
3 |
*
|
4 |
* Copyright (C) 2007-2013 gvSIG Association.
|
5 |
*
|
6 |
* This program is free software; you can redistribute it and/or
|
7 |
* modify it under the terms of the GNU General Public License
|
8 |
* as published by the Free Software Foundation; either version 3
|
9 |
* of the License, or (at your option) any later version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful,
|
12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
14 |
* GNU General Public License for more details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License
|
17 |
* along with this program; if not, write to the Free Software
|
18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
19 |
* MA 02110-1301, USA.
|
20 |
*
|
21 |
* For any additional information, do not hesitate to contact us
|
22 |
* at info AT gvsig.com, or visit our website www.gvsig.com.
|
23 |
*/
|
24 |
package org.gvsig.fmap.dal.feature.impl; |
25 |
|
26 |
import java.util.ArrayList; |
27 |
import java.util.HashMap; |
28 |
import java.util.List; |
29 |
import java.util.Map; |
30 |
import java.util.Map.Entry; |
31 |
|
32 |
import org.slf4j.Logger; |
33 |
import org.slf4j.LoggerFactory; |
34 |
|
35 |
import org.gvsig.fmap.dal.DataStoreNotification; |
36 |
import org.gvsig.fmap.dal.exception.DataException; |
37 |
import org.gvsig.fmap.dal.feature.EditableFeature; |
38 |
import org.gvsig.fmap.dal.feature.Feature; |
39 |
import org.gvsig.fmap.dal.feature.FeatureReference; |
40 |
import org.gvsig.fmap.dal.feature.FeatureSelection; |
41 |
import org.gvsig.fmap.dal.feature.FeatureSet; |
42 |
import org.gvsig.fmap.dal.feature.FeatureStore; |
43 |
import org.gvsig.fmap.dal.feature.FeatureType; |
44 |
import org.gvsig.fmap.dal.feature.exception.ReversedSelectionIteratorException; |
45 |
import org.gvsig.fmap.dal.feature.impl.featureset.DynObjectSetFeatureSetFacade; |
46 |
import org.gvsig.tools.ToolsLocator; |
47 |
import org.gvsig.tools.dispose.DisposableIterator; |
48 |
import org.gvsig.tools.dynobject.DynObjectSet; |
49 |
import org.gvsig.tools.dynobject.DynStruct; |
50 |
import org.gvsig.tools.exception.BaseException; |
51 |
import org.gvsig.tools.persistence.PersistenceManager; |
52 |
import org.gvsig.tools.persistence.PersistentState; |
53 |
import org.gvsig.tools.persistence.exception.PersistenceException; |
54 |
import org.gvsig.tools.visitor.VisitCanceledException; |
55 |
import org.gvsig.tools.visitor.Visitor; |
56 |
|
57 |
/**
|
58 |
* Default implementation of the FeatureSelection interface. Internally, only
|
59 |
* FeatureReference values are stored.
|
60 |
*
|
61 |
* This implementation performs better if used with the selection related
|
62 |
* methods: select, deselect and isSelected ones.
|
63 |
*
|
64 |
* @author <a href="mailto:cordin@disid.com">C?sar Ordi?ana</a>
|
65 |
*/
|
66 |
public class DefaultFeatureSelection extends DefaultFeatureReferenceSelection |
67 |
implements FeatureSelection {
|
68 |
|
69 |
private static final Logger LOG = LoggerFactory |
70 |
.getLogger(DefaultFeatureSelection.class); |
71 |
|
72 |
private Map featureTypeCounts = new HashMap(1); |
73 |
|
74 |
/**
|
75 |
* Creates a DefaultFeatureSelection, with a FeatureStore.
|
76 |
*
|
77 |
* @param featureStore
|
78 |
* the FeatureStore to load Features from
|
79 |
* @throws DataException
|
80 |
* if there is an error while getting the total number of
|
81 |
* Features of the Store.
|
82 |
* @see AbstractSetBasedDataSelection#DefaultSelection(int)
|
83 |
*/
|
84 |
public DefaultFeatureSelection(DefaultFeatureStore featureStore)
|
85 |
throws DataException {
|
86 |
super(featureStore);
|
87 |
} |
88 |
|
89 |
/**
|
90 |
* Creates a new Selection with the total size of Features from which the
|
91 |
* selection will be performed.
|
92 |
*
|
93 |
* @param featureStore
|
94 |
* the FeatureStore of the selected FeatureReferences
|
95 |
* @param helper
|
96 |
* to get some information of the Store
|
97 |
* @throws DataException
|
98 |
* if there is an error while getting the total number of
|
99 |
* Features of the Store.
|
100 |
*/
|
101 |
public DefaultFeatureSelection(FeatureStore featureStore,
|
102 |
FeatureSelectionHelper helper) throws DataException {
|
103 |
super(featureStore, helper);
|
104 |
} |
105 |
|
106 |
/**
|
107 |
* Constructor used by the persistence manager. Don't use directly. After to
|
108 |
* invoke this method, the persistence manager calls the the method
|
109 |
* {@link #loadFromState(PersistentState)} to set the values of the internal
|
110 |
* attributes that this class needs to work.
|
111 |
*/
|
112 |
public DefaultFeatureSelection() {
|
113 |
super();
|
114 |
} |
115 |
|
116 |
public boolean select(Feature feature) { |
117 |
return select(feature, true); |
118 |
} |
119 |
|
120 |
/**
|
121 |
* @see #select(Feature)
|
122 |
* @param undoable
|
123 |
* if the action must be undoable
|
124 |
*/
|
125 |
public boolean select(Feature feature, boolean undoable) { |
126 |
// TODO: should we check if the feature is from the same FeatureStore??
|
127 |
if (feature == null) { |
128 |
return false; |
129 |
} |
130 |
|
131 |
// LOGGER.debug("Selected feature: {}", feature);
|
132 |
|
133 |
if (isReversed()) {
|
134 |
removeFeatureTypeCount(feature.getType()); |
135 |
} else {
|
136 |
addFeatureTypeCount(feature.getType()); |
137 |
} |
138 |
return select(feature.getReference(), undoable);
|
139 |
} |
140 |
|
141 |
public boolean select(FeatureSet features) throws DataException { |
142 |
return select(features, true); |
143 |
} |
144 |
|
145 |
/**
|
146 |
* @see #select(FeatureSet)
|
147 |
* @param undoable
|
148 |
* if the action must be undoable
|
149 |
*/
|
150 |
public boolean select(FeatureSet features, boolean undoable) |
151 |
throws DataException {
|
152 |
boolean change = false; |
153 |
boolean inComplex = false; |
154 |
if (undoable && getFeatureStore().isEditing()
|
155 |
&& !getCommands().inComplex()) { |
156 |
|
157 |
getCommands().startComplex("_selectionSelectFeatureSet");
|
158 |
inComplex = getCommands().inComplex(); |
159 |
} |
160 |
|
161 |
disableNotifications(); |
162 |
DisposableIterator iter = null;
|
163 |
try {
|
164 |
for (iter = features.fastIterator(); iter.hasNext();) {
|
165 |
change |= select((Feature) iter.next(), undoable); |
166 |
} |
167 |
} finally {
|
168 |
dispose(iter); |
169 |
} |
170 |
enableNotifications(); |
171 |
if (undoable && getFeatureStore().isEditing() && inComplex) {
|
172 |
getCommands().endComplex(); |
173 |
} |
174 |
if (change) {
|
175 |
notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
176 |
} |
177 |
return change;
|
178 |
} |
179 |
|
180 |
public boolean deselect(Feature feature) { |
181 |
return deselect(feature, true); |
182 |
} |
183 |
|
184 |
/**
|
185 |
* @see #deselect(Feature)
|
186 |
* @param undoable
|
187 |
* if the action must be undoable
|
188 |
*/
|
189 |
public boolean deselect(Feature feature, boolean undoable) { |
190 |
if (feature == null) { |
191 |
return false; |
192 |
} |
193 |
|
194 |
LOG.debug("Deselected feature: {}", feature);
|
195 |
|
196 |
if (isReversed()) {
|
197 |
addFeatureTypeCount(feature.getType()); |
198 |
} else {
|
199 |
removeFeatureTypeCount(feature.getType()); |
200 |
} |
201 |
return deselect(feature.getReference(), undoable);
|
202 |
} |
203 |
|
204 |
public boolean deselect(FeatureSet features) throws DataException { |
205 |
return deselect(features, true); |
206 |
} |
207 |
|
208 |
/**
|
209 |
* @see #deselect(FeatureSet)
|
210 |
* @param undoable
|
211 |
* if the action must be undoable
|
212 |
*/
|
213 |
public boolean deselect(FeatureSet features, boolean undoable) |
214 |
throws DataException {
|
215 |
boolean change = false; |
216 |
if (undoable && getFeatureStore().isEditing()) {
|
217 |
getCommands().startComplex("_selectionDeselectFeatureSet");
|
218 |
} |
219 |
disableNotifications(); |
220 |
DisposableIterator iter = null;
|
221 |
try {
|
222 |
for (iter = features.fastIterator(); iter.hasNext();) {
|
223 |
change |= deselect((Feature) iter.next(), undoable); |
224 |
} |
225 |
} finally {
|
226 |
dispose(iter); |
227 |
} |
228 |
enableNotifications(); |
229 |
if (undoable && getFeatureStore().isEditing()) {
|
230 |
getCommands().endComplex(); |
231 |
} |
232 |
if (change) {
|
233 |
notifyObservers(DataStoreNotification.SELECTION_CHANGE); |
234 |
} |
235 |
return change;
|
236 |
} |
237 |
|
238 |
public boolean isSelected(Feature feature) { |
239 |
if (feature == null) { |
240 |
return false; |
241 |
} |
242 |
|
243 |
// Use the selection data size as a small optimization for the most
|
244 |
// common case, when nothing is selected and every feature is checked
|
245 |
// while drawing or painting the table document.
|
246 |
if (selectionData.isReversed()) {
|
247 |
return selectionData.getSize() == 0 |
248 |
|| !selectionData.contains(feature.getReference()); |
249 |
} else {
|
250 |
return selectionData.getSize() > 0 |
251 |
&& selectionData.contains(feature.getReference()); |
252 |
} |
253 |
} |
254 |
|
255 |
public FeatureType getDefaultFeatureType() {
|
256 |
try {
|
257 |
return getFeatureStore().getDefaultFeatureType();
|
258 |
} catch (DataException ex) {
|
259 |
LOG.error("Error getting the default feature type "
|
260 |
+ "of the FeatureStore: " + getFeatureStore(), ex);
|
261 |
} |
262 |
return null; |
263 |
} |
264 |
|
265 |
public List getFeatureTypes() { |
266 |
// Go through the map of FeatureTypes, and return only the ones that
|
267 |
// have at least a Feature.
|
268 |
List types = new ArrayList(); |
269 |
for (java.util.Iterator iterator = featureTypeCounts.entrySet()
|
270 |
.iterator(); iterator.hasNext();) { |
271 |
Map.Entry entry = (Entry) iterator.next();
|
272 |
FeatureType type = (FeatureType) entry.getKey(); |
273 |
Long count = (Long) entry.getValue(); |
274 |
|
275 |
if (count.longValue() > 0) { |
276 |
types.add(type); |
277 |
} |
278 |
} |
279 |
|
280 |
return types;
|
281 |
} |
282 |
|
283 |
public long getSize() throws DataException { |
284 |
return getSelectedCount();
|
285 |
} |
286 |
|
287 |
public boolean isEmpty() throws DataException { |
288 |
return getSelectedCount() == 0; |
289 |
} |
290 |
|
291 |
/**
|
292 |
* Returns the list of selected values, or the deselected ones if the
|
293 |
* selection has been reversed.
|
294 |
*/
|
295 |
public DisposableIterator iterator() {
|
296 |
return iterator(0); |
297 |
} |
298 |
|
299 |
/**
|
300 |
* Returns the list of selected values, or the deselected ones if the
|
301 |
* selection has been reversed.
|
302 |
*
|
303 |
* WARN: not very good performance implementation.
|
304 |
*/
|
305 |
public DisposableIterator iterator(long index) { |
306 |
return iterator(index, false); |
307 |
} |
308 |
|
309 |
/**
|
310 |
* Returns the list of selected values, or the deselected ones if the
|
311 |
* selection has been reversed.
|
312 |
*
|
313 |
* WARN: not really a fast implementation.
|
314 |
*/
|
315 |
public DisposableIterator fastIterator() {
|
316 |
return fastIterator(0); |
317 |
} |
318 |
|
319 |
/**
|
320 |
* Returns the list of selected values, or the deselected ones if the
|
321 |
* selection has been reversed.
|
322 |
*
|
323 |
* WARN: not really a fast implementation.
|
324 |
*/
|
325 |
public DisposableIterator fastIterator(long index) { |
326 |
return iterator(index, true); |
327 |
} |
328 |
|
329 |
protected void clearFeatureReferences() { |
330 |
super.clearFeatureReferences();
|
331 |
featureTypeCounts.clear(); |
332 |
} |
333 |
|
334 |
/**
|
335 |
* Creates an iterator for the Selection.
|
336 |
*/
|
337 |
private DisposableIterator iterator(long index, boolean fastIterator) { |
338 |
if (isReversed()) {
|
339 |
DisposableIterator iter = new ReversedFeatureIteratorFacade(
|
340 |
getData(), getFeatureStore(), fastIterator); |
341 |
for (long l = 0; l < index && iter.hasNext(); l++) { |
342 |
iter.next(); |
343 |
} |
344 |
return iter;
|
345 |
|
346 |
} else {
|
347 |
// TODO: maybe we could add a new referenceIterator(int index)
|
348 |
// method that could be implemented in a more performant way
|
349 |
|
350 |
java.util.Iterator iter = referenceIterator(); |
351 |
for (long l = 0; l < index && iter.hasNext(); l++) { |
352 |
iter.next(); |
353 |
} |
354 |
return new FeatureIteratorFacade(iter, getFeatureStore()); |
355 |
} |
356 |
} |
357 |
|
358 |
private Long removeFeatureTypeCount(FeatureType featureType) { |
359 |
Long count = (Long) featureTypeCounts.get(featureType); |
360 |
if (count == null) { |
361 |
count = new Long(-1); |
362 |
} else {
|
363 |
count = new Long(count.longValue() - 1); |
364 |
} |
365 |
featureTypeCounts.put(featureType, count); |
366 |
return count;
|
367 |
} |
368 |
|
369 |
private Long addFeatureTypeCount(FeatureType featureType) { |
370 |
Long count = (Long) featureTypeCounts.get(featureType); |
371 |
if (count == null) { |
372 |
count = new Long(1); |
373 |
} else {
|
374 |
count = new Long(count.longValue() + 1); |
375 |
} |
376 |
featureTypeCounts.put(featureType, count); |
377 |
return count;
|
378 |
} |
379 |
|
380 |
/**
|
381 |
* Facade over a Iterator of FeatureReferences, to return Features instead.
|
382 |
*
|
383 |
* @author <a href="mailto:cordin@disid.com">C?sar Ordi?ana</a>
|
384 |
*/
|
385 |
private class FeatureIteratorFacade implements DisposableIterator { |
386 |
|
387 |
private final Logger LOGGER = LoggerFactory |
388 |
.getLogger(FeatureIteratorFacade.class); |
389 |
|
390 |
private java.util.Iterator refIterator;
|
391 |
|
392 |
private FeatureStore featureStore;
|
393 |
|
394 |
public FeatureIteratorFacade(java.util.Iterator iter,
|
395 |
FeatureStore featureStore) { |
396 |
this.refIterator = iter;
|
397 |
this.featureStore = featureStore;
|
398 |
} |
399 |
|
400 |
public boolean hasNext() { |
401 |
return refIterator.hasNext();
|
402 |
} |
403 |
|
404 |
public Object next() { |
405 |
FeatureReference ref = nextFeatureReference(); |
406 |
try {
|
407 |
return featureStore.getFeatureByReference(ref);
|
408 |
} catch (DataException ex) {
|
409 |
LOGGER.error( |
410 |
"Error loading the Feature with FeatureReference: "
|
411 |
+ ref, ex); |
412 |
return null; |
413 |
} |
414 |
} |
415 |
|
416 |
/**
|
417 |
* Returns the next FeatureReference.
|
418 |
*
|
419 |
* @return the next FeatureReference
|
420 |
*/
|
421 |
public FeatureReference nextFeatureReference() {
|
422 |
return (FeatureReference) refIterator.next();
|
423 |
} |
424 |
|
425 |
public void remove() { |
426 |
refIterator.remove(); |
427 |
} |
428 |
|
429 |
public void dispose() { |
430 |
if (refIterator instanceof DisposableIterator) { |
431 |
((DisposableIterator) refIterator).dispose(); |
432 |
} |
433 |
refIterator = null;
|
434 |
featureStore = null;
|
435 |
} |
436 |
} |
437 |
|
438 |
/**
|
439 |
* Facade over a Iterator of FeatureReferences, to return Features instead,
|
440 |
* when the Selection is reversed
|
441 |
*
|
442 |
* @author <a href="mailto:cordin@disid.com">C?sar Ordi?ana</a>
|
443 |
*/
|
444 |
private class ReversedFeatureIteratorFacade implements DisposableIterator { |
445 |
|
446 |
private SelectionData selectionData;
|
447 |
|
448 |
private DisposableIterator iterator;
|
449 |
|
450 |
private Feature nextFeature = null; |
451 |
|
452 |
private FeatureSet featureSet;
|
453 |
|
454 |
public ReversedFeatureIteratorFacade(SelectionData selectionData,
|
455 |
FeatureStore featureStore, boolean fastIterator) {
|
456 |
this.selectionData = selectionData;
|
457 |
|
458 |
// Load a Set with all the store features
|
459 |
try {
|
460 |
featureSet = featureStore.getFeatureSet(); |
461 |
if (fastIterator) {
|
462 |
iterator = featureSet.fastIterator(); |
463 |
} else {
|
464 |
iterator = featureSet.iterator(); |
465 |
} |
466 |
} catch (DataException ex) {
|
467 |
throw new ReversedSelectionIteratorException(ex); |
468 |
} |
469 |
|
470 |
// Filter the features not selected and position in the next
|
471 |
// selected feature
|
472 |
positionInNextElement(); |
473 |
} |
474 |
|
475 |
public boolean hasNext() { |
476 |
return nextFeature != null; |
477 |
} |
478 |
|
479 |
public Object next() { |
480 |
Feature tmp = nextFeature.getCopy(); |
481 |
positionInNextElement(); |
482 |
return tmp;
|
483 |
} |
484 |
|
485 |
public void remove() { |
486 |
iterator.remove(); |
487 |
} |
488 |
|
489 |
private void positionInNextElement() { |
490 |
nextFeature = null;
|
491 |
while (iterator.hasNext()) {
|
492 |
nextFeature = (Feature) iterator.next(); |
493 |
if (selectionData.contains(nextFeature.getReference())) {
|
494 |
nextFeature = null;
|
495 |
} else {
|
496 |
break;
|
497 |
} |
498 |
} |
499 |
} |
500 |
|
501 |
public void dispose() { |
502 |
this.featureSet.dispose();
|
503 |
this.iterator.dispose();
|
504 |
this.selectionData = null; |
505 |
this.nextFeature = null; |
506 |
} |
507 |
} |
508 |
|
509 |
public void delete(Feature feature) throws DataException { |
510 |
throw new UnsupportedOperationException(); |
511 |
} |
512 |
|
513 |
public void insert(EditableFeature feature) throws DataException { |
514 |
throw new UnsupportedOperationException(); |
515 |
} |
516 |
|
517 |
public void update(EditableFeature feature) throws DataException { |
518 |
throw new UnsupportedOperationException(); |
519 |
} |
520 |
|
521 |
/*
|
522 |
* (non-Javadoc)
|
523 |
*
|
524 |
* @seeorg.gvsig.fmap.dal.feature.impl.DefaultFeatureReferenceSelection#
|
525 |
* loadFromState(org.gvsig.tools.persistence.PersistentState)
|
526 |
*/
|
527 |
public void loadFromState(PersistentState state) |
528 |
throws PersistenceException {
|
529 |
super.loadFromState(state);
|
530 |
|
531 |
} |
532 |
|
533 |
public void accept(Visitor visitor) throws BaseException { |
534 |
accept(visitor, 0);
|
535 |
} |
536 |
|
537 |
public final void accept(Visitor visitor, long firstValueIndex) |
538 |
throws BaseException {
|
539 |
try {
|
540 |
doAccept(visitor, firstValueIndex); |
541 |
} catch (VisitCanceledException ex) {
|
542 |
// The visit has been cancelled by the visitor, so we finish here.
|
543 |
LOG.debug( |
544 |
"The visit, beggining on position {}, has been cancelled "
|
545 |
+ "by the visitor: {}", new Long(firstValueIndex), |
546 |
visitor); |
547 |
} |
548 |
} |
549 |
|
550 |
private void doAccept(Visitor visitor, long firstValueIndex) |
551 |
throws BaseException {
|
552 |
DisposableIterator iterator = fastIterator(firstValueIndex); |
553 |
|
554 |
if (iterator != null) { |
555 |
try {
|
556 |
while (iterator.hasNext()) {
|
557 |
Feature feature = (Feature) iterator.next(); |
558 |
visitor.visit(feature); |
559 |
} |
560 |
} finally {
|
561 |
iterator.dispose(); |
562 |
} |
563 |
} |
564 |
} |
565 |
|
566 |
protected void doDispose() throws BaseException { |
567 |
super.doDispose();
|
568 |
featureTypeCounts.clear(); |
569 |
} |
570 |
|
571 |
public static void registerPersistent() { |
572 |
PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
573 |
DynStruct definition = manager.addDefinition( |
574 |
DefaultFeatureSelection.class, "DefaultFeatureSelection",
|
575 |
"DefaultFeatureSelection Persistent definition", null, null); |
576 |
|
577 |
definition.extend(manager.getDefinition(DefaultFeatureReferenceSelection.DYNCLASS_PERSISTENT_NAME)); |
578 |
definition.addDynFieldMap("featureTypeCounts")
|
579 |
.setClassOfItems(Long.class).setMandatory(false); |
580 |
|
581 |
} |
582 |
|
583 |
public Object clone() throws CloneNotSupportedException { |
584 |
DefaultFeatureSelection clone = (DefaultFeatureSelection) super.clone();
|
585 |
clone.featureTypeCounts = new HashMap(featureTypeCounts); |
586 |
return clone;
|
587 |
} |
588 |
|
589 |
public DynObjectSet getDynObjectSet() {
|
590 |
return new DynObjectSetFeatureSetFacade(this, getFeatureStore()); |
591 |
} |
592 |
|
593 |
public DynObjectSet getDynObjectSet(boolean fast) { |
594 |
return new DynObjectSetFeatureSetFacade(this, getFeatureStore(), fast); |
595 |
} |
596 |
|
597 |
} |