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 / DefaultFeatureQueryOrder.java @ 47248
History | View | Annotate | Download (17.3 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 modify it under
|
7 |
* the terms of the GNU General Public License as published by the Free Software
|
8 |
* Foundation; either version 3 of the License, or (at your option) any later
|
9 |
* version.
|
10 |
*
|
11 |
* This program is distributed in the hope that it will be useful, but WITHOUT
|
12 |
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
13 |
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
|
14 |
* details.
|
15 |
*
|
16 |
* You should have received a copy of the GNU General Public License along with
|
17 |
* this program; if not, write to the Free Software Foundation, Inc., 51
|
18 |
* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
19 |
*
|
20 |
* For any additional information, do not hesitate to contact us at info AT
|
21 |
* gvsig.com, or visit our website www.gvsig.com.
|
22 |
*/
|
23 |
package org.gvsig.fmap.dal.feature.impl; |
24 |
|
25 |
import java.util.ArrayList; |
26 |
import java.util.Collections; |
27 |
import java.util.Comparator; |
28 |
import java.util.Iterator; |
29 |
import java.util.List; |
30 |
import java.util.NoSuchElementException; |
31 |
import javax.json.JsonArray; |
32 |
import javax.json.JsonObject; |
33 |
import javax.json.JsonValue; |
34 |
import org.apache.commons.lang3.StringUtils; |
35 |
import org.apache.commons.lang3.builder.ToStringBuilder; |
36 |
import org.gvsig.expressionevaluator.Expression; |
37 |
import org.gvsig.expressionevaluator.ExpressionEvaluator; |
38 |
import org.gvsig.fmap.dal.exception.DataEvaluatorRuntimeException; |
39 |
import org.gvsig.fmap.dal.feature.Feature; |
40 |
import org.gvsig.fmap.dal.feature.FeatureQueryOrder; |
41 |
import org.gvsig.fmap.dal.impl.expressionevaluator.DefaultFeatureExpressionEvaluator; |
42 |
import org.gvsig.json.Json; |
43 |
import org.gvsig.json.JsonObjectBuilder; |
44 |
import org.gvsig.tools.ToolsLocator; |
45 |
import org.gvsig.tools.dynobject.DynStruct; |
46 |
import org.gvsig.tools.evaluator.Evaluator; |
47 |
import org.gvsig.tools.evaluator.EvaluatorData; |
48 |
import org.gvsig.tools.evaluator.EvaluatorException; |
49 |
import org.gvsig.tools.persistence.PersistentState; |
50 |
import org.gvsig.tools.persistence.exception.PersistenceException; |
51 |
import org.slf4j.LoggerFactory; |
52 |
|
53 |
public class DefaultFeatureQueryOrder implements FeatureQueryOrder { |
54 |
|
55 |
public static class FeatureQueryOrderMemberImpl implements FeatureQueryOrderMember { |
56 |
|
57 |
String attributeName = null; |
58 |
Evaluator evaluator = null;
|
59 |
// Expression expression = null;
|
60 |
boolean ascending;
|
61 |
|
62 |
private final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(FeatureQueryOrderMember.class); |
63 |
|
64 |
public FeatureQueryOrderMemberImpl() {
|
65 |
|
66 |
} |
67 |
|
68 |
FeatureQueryOrderMemberImpl(String attributeName, boolean ascending) { |
69 |
this.attributeName = attributeName;
|
70 |
this.ascending = ascending;
|
71 |
} |
72 |
|
73 |
FeatureQueryOrderMemberImpl(Evaluator evaluator, boolean ascending) {
|
74 |
this.evaluator = evaluator;
|
75 |
LOGGER.warn("Creating evaluator that will not be able to persist");
|
76 |
this.ascending = ascending;
|
77 |
} |
78 |
|
79 |
FeatureQueryOrderMemberImpl(ExpressionEvaluator evaluator, boolean ascending) {
|
80 |
this.evaluator = evaluator;
|
81 |
this.ascending = ascending;
|
82 |
} |
83 |
|
84 |
@Override
|
85 |
public String toString() { |
86 |
try {
|
87 |
ToStringBuilder builder = new ToStringBuilder(this); |
88 |
if( evaluator==null ) { |
89 |
builder.append("attributeName", this.attributeName); |
90 |
} else {
|
91 |
builder.append("evaluator", this.evaluator.getSQL()); |
92 |
} |
93 |
builder.append("ascending", this.ascending ? "ASC" : "DESC"); |
94 |
return builder.toString();
|
95 |
} catch (Exception e) { |
96 |
return super.toString(); |
97 |
} |
98 |
} |
99 |
|
100 |
|
101 |
public boolean hasEvaluator() { |
102 |
return this.evaluator != null; |
103 |
} |
104 |
|
105 |
public Evaluator getEvaluator() {
|
106 |
return this.evaluator; |
107 |
} |
108 |
|
109 |
public boolean getAscending() { |
110 |
return this.ascending; |
111 |
} |
112 |
|
113 |
public String getAttributeName() { |
114 |
return this.attributeName; |
115 |
} |
116 |
|
117 |
@Override
|
118 |
public void loadFromState(PersistentState state) |
119 |
throws PersistenceException {
|
120 |
this.attributeName = state.getString("attributeName"); |
121 |
this.ascending = state.getBoolean("ascending"); |
122 |
this.evaluator = (Evaluator) state.get("evaluator"); |
123 |
} |
124 |
|
125 |
@Override
|
126 |
public void saveToState(PersistentState state) |
127 |
throws PersistenceException {
|
128 |
state.set("attributeName", this.attributeName); |
129 |
state.set("ascending", this.ascending); |
130 |
if(evaluator instanceof ExpressionEvaluator){ |
131 |
state.set("evaluator", evaluator);
|
132 |
} else {
|
133 |
state.setNull("evaluator");
|
134 |
} |
135 |
} |
136 |
|
137 |
@Override
|
138 |
public FeatureQueryOrderMember clone() throws CloneNotSupportedException { |
139 |
// Nothing more to clone
|
140 |
return (FeatureQueryOrderMember) super.clone(); |
141 |
} |
142 |
|
143 |
public void setAscending(boolean ascending) { |
144 |
this.ascending = ascending;
|
145 |
} |
146 |
|
147 |
@Override
|
148 |
public void fromJson(JsonObject json) { |
149 |
this.attributeName = json.getString("attributeName", null); |
150 |
this.ascending = json.getBoolean("ascending", true); |
151 |
this.evaluator = (Evaluator) Json.toObject(json, "evaluator"); |
152 |
} |
153 |
|
154 |
@Override
|
155 |
public JsonObjectBuilder toJsonBuilder() {
|
156 |
JsonObjectBuilder state = Json.createObjectBuilder(); |
157 |
state.add("attributeName", this.attributeName); |
158 |
state.add("ascending", this.ascending); |
159 |
if(evaluator instanceof ExpressionEvaluator){ |
160 |
state.add("evaluator", evaluator);
|
161 |
} else {
|
162 |
state.addNull("evaluator");
|
163 |
} |
164 |
return state;
|
165 |
} |
166 |
|
167 |
} |
168 |
|
169 |
private List<FeatureQueryOrderMember> members = new ArrayList(); |
170 |
private static final org.slf4j.Logger LOGGER = LoggerFactory.getLogger(DefaultFeatureQueryOrder.class); |
171 |
|
172 |
public DefaultFeatureQueryOrder() {
|
173 |
} |
174 |
|
175 |
public void copyFrom(FeatureQueryOrder other) { |
176 |
List<FeatureQueryOrderMember> theMembers = new ArrayList<>(); |
177 |
for (FeatureQueryOrderMember member : other) {
|
178 |
FeatureQueryOrderMember m; |
179 |
try {
|
180 |
m = member.clone(); |
181 |
} catch (CloneNotSupportedException ex) { |
182 |
throw new RuntimeException("Can't copy member (" + member.toString() + ").", ex); |
183 |
} |
184 |
theMembers.add(m); |
185 |
} |
186 |
this.members = theMembers;
|
187 |
} |
188 |
|
189 |
public Object add(String order) { |
190 |
if (StringUtils.isEmpty(order)) {
|
191 |
return null; |
192 |
} |
193 |
Object r = null; |
194 |
String[] attributes = StringUtils.split(order, ','); |
195 |
for (String attribute : attributes) { |
196 |
boolean ascending = true; |
197 |
if (attribute.startsWith("+")) { |
198 |
ascending = true;
|
199 |
attribute = attribute.substring(1);
|
200 |
} else if (attribute.startsWith("-")) { |
201 |
ascending = false;
|
202 |
attribute = attribute.substring(1);
|
203 |
} |
204 |
attribute = attribute.trim(); |
205 |
r = this.add(attribute, ascending);
|
206 |
} |
207 |
return r;
|
208 |
} |
209 |
|
210 |
public Object add(String attributeName, boolean ascending) { |
211 |
FeatureQueryOrderMember member = new FeatureQueryOrderMemberImpl(
|
212 |
attributeName, ascending); |
213 |
if (members.add(member)) {
|
214 |
return member;
|
215 |
} |
216 |
return null; |
217 |
} |
218 |
|
219 |
public Object add(Expression expr, boolean ascending) { |
220 |
|
221 |
Evaluator evaluator = new DefaultFeatureExpressionEvaluator(expr);
|
222 |
FeatureQueryOrderMember member = new FeatureQueryOrderMemberImpl(
|
223 |
evaluator, |
224 |
ascending); |
225 |
if (members.add(member)) {
|
226 |
return member;
|
227 |
} |
228 |
return null; |
229 |
|
230 |
} |
231 |
|
232 |
public Iterable<FeatureQueryOrderMember> members() { |
233 |
// Me hubiese gustado que FeatureQueryOrder fuese Iterable, pero no se deja por
|
234 |
// que FeatureQueryOrderMember es una clase interna y no esta definida en el
|
235 |
// momento de poner el :
|
236 |
// implements Iterable<FeatureQueryOrderMember>
|
237 |
// Y si saco a una clase independiente FeatureQueryOrderMember se pierde
|
238 |
// compatibilidad binaria con quien la esta usando.
|
239 |
// Para rodearlo, he creado el metodo members.
|
240 |
return new Iterable<FeatureQueryOrderMember>() { |
241 |
|
242 |
@Override
|
243 |
public Iterator<FeatureQueryOrderMember> iterator() { |
244 |
return DefaultFeatureQueryOrder.this.iterator();
|
245 |
} |
246 |
}; |
247 |
} |
248 |
|
249 |
public Iterator<FeatureQueryOrderMember> iterator() { |
250 |
if (members == null) { |
251 |
return new Iterator<FeatureQueryOrderMember>() { |
252 |
@Override
|
253 |
public boolean hasNext() { |
254 |
return false; |
255 |
} |
256 |
|
257 |
@Override
|
258 |
public FeatureQueryOrderMember next() {
|
259 |
throw new NoSuchElementException(); |
260 |
} |
261 |
|
262 |
@Override
|
263 |
public void remove() { |
264 |
throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates. |
265 |
} |
266 |
}; |
267 |
} |
268 |
return members.iterator();
|
269 |
} |
270 |
|
271 |
public boolean remove(FeatureQueryOrderMember member) { |
272 |
return members.remove(member);
|
273 |
} |
274 |
|
275 |
public void remove(int index) { |
276 |
members.remove(index); |
277 |
} |
278 |
|
279 |
public void clear() { |
280 |
members.clear(); |
281 |
} |
282 |
|
283 |
public int size() { |
284 |
return this.members.size(); |
285 |
} |
286 |
|
287 |
public int getIndex(String attributeName) { |
288 |
int n = 0; |
289 |
for (FeatureQueryOrderMember member : members) {
|
290 |
if (member != null && StringUtils.equalsIgnoreCase(attributeName, member.getAttributeName())) { |
291 |
return n;
|
292 |
} |
293 |
n++; |
294 |
} |
295 |
return -1; |
296 |
} |
297 |
|
298 |
public void movePrevious(String name) { |
299 |
int n = this.getIndex(name); |
300 |
if (n < 1) { |
301 |
return;
|
302 |
} |
303 |
Collections.swap(members, n, n - 1); |
304 |
} |
305 |
|
306 |
public void moveNext(String name) { |
307 |
int n = this.getIndex(name); |
308 |
if (n >= this.members.size() - 1) { |
309 |
return;
|
310 |
} |
311 |
Collections.swap(members, n, n + 1); |
312 |
} |
313 |
|
314 |
public boolean isEmpty() { |
315 |
return this.members == null || this.members.isEmpty(); |
316 |
} |
317 |
|
318 |
public FeatureQueryOrderMember get(String attributeName) { |
319 |
for (FeatureQueryOrderMember member : members) {
|
320 |
if (member != null && StringUtils.equalsIgnoreCase(attributeName, member.getAttributeName())) { |
321 |
return member;
|
322 |
} |
323 |
} |
324 |
return null; |
325 |
} |
326 |
|
327 |
public boolean contains(String attributeName) { |
328 |
for (FeatureQueryOrderMember member : members) {
|
329 |
if (member != null && StringUtils.equalsIgnoreCase(attributeName, member.getAttributeName())) { |
330 |
return true; |
331 |
} |
332 |
} |
333 |
return false; |
334 |
} |
335 |
|
336 |
public Comparator<Feature> getFeatureComparator() { |
337 |
return new DefaultFeatureComparator(this); |
338 |
} |
339 |
|
340 |
@Override
|
341 |
public DefaultFeatureQueryOrder clone() throws CloneNotSupportedException { |
342 |
DefaultFeatureQueryOrder clone = (DefaultFeatureQueryOrder) super.clone();
|
343 |
|
344 |
if (members != null) { |
345 |
clone.members = new ArrayList(members.size()); |
346 |
for (int i = 0; i < members.size(); i++) { |
347 |
clone.members.add((members.get(i)).clone()); |
348 |
} |
349 |
} |
350 |
|
351 |
return clone;
|
352 |
} |
353 |
|
354 |
public DefaultFeatureQueryOrder getCopy() {
|
355 |
DefaultFeatureQueryOrder aCopy = new DefaultFeatureQueryOrder();
|
356 |
Iterator iter = this.members.iterator(); |
357 |
FeatureQueryOrderMember member; |
358 |
while (iter.hasNext()) {
|
359 |
member = (FeatureQueryOrderMember) iter.next(); |
360 |
if (member.hasEvaluator()) {
|
361 |
// aCopy.add(member.getEvaluator(), member.getAscending());
|
362 |
LOGGER.warn("Evaluator is not being added to the filter in a class copy");
|
363 |
} else {
|
364 |
aCopy.add(member.getAttributeName(), member.getAscending()); |
365 |
} |
366 |
} |
367 |
return aCopy;
|
368 |
} |
369 |
|
370 |
public static void selfRegister() { |
371 |
registerPersistent(); |
372 |
Json.registerSerializer(DefaultFeatureQueryOrder.class); |
373 |
Json.registerSerializer(FeatureQueryOrderMemberImpl.class); |
374 |
} |
375 |
|
376 |
/**
|
377 |
* Register the class on PersistenceManager
|
378 |
*
|
379 |
*/
|
380 |
private static void registerPersistent() { |
381 |
DynStruct definitionMember |
382 |
= ToolsLocator.getPersistenceManager() |
383 |
.addDefinition(FeatureQueryOrderMemberImpl.class, |
384 |
"FeatureQueryOrderMember",
|
385 |
"FeatureQueryOrderMember Persistent definition",
|
386 |
null,
|
387 |
null);
|
388 |
|
389 |
definitionMember.addDynFieldString("attributeName").setClassOfValue(String.class).setMandatory(false); |
390 |
definitionMember.addDynFieldObject("evaluator").setClassOfValue(ExpressionEvaluator.class).setMandatory(false); |
391 |
definitionMember.addDynFieldBoolean("ascending").setMandatory(false); |
392 |
|
393 |
DynStruct definition |
394 |
= ToolsLocator.getPersistenceManager() |
395 |
.addDefinition(DefaultFeatureQueryOrder.class, |
396 |
"FeatureQueryOrder",
|
397 |
"FeatureQueryOrder Persistent definition",
|
398 |
null,
|
399 |
null);
|
400 |
|
401 |
definition.addDynFieldList("members").setClassOfItems(FeatureQueryOrderMemberImpl.class);
|
402 |
|
403 |
} |
404 |
|
405 |
@Override
|
406 |
public void loadFromState(PersistentState state) |
407 |
throws PersistenceException {
|
408 |
List<FeatureQueryOrderMember> stateMembers = (List) state.get("members"); |
409 |
this.members = new ArrayList<>(); |
410 |
for (FeatureQueryOrderMember stateMember : stateMembers) {
|
411 |
this.members.add(stateMember);
|
412 |
} |
413 |
} |
414 |
|
415 |
@Override
|
416 |
public void saveToState(PersistentState state) throws PersistenceException { |
417 |
state.set("members", members);
|
418 |
|
419 |
} |
420 |
|
421 |
private class DefaultFeatureComparator implements Comparator<Feature> { |
422 |
|
423 |
private final DefaultFeatureQueryOrder order; |
424 |
|
425 |
public DefaultFeatureComparator(DefaultFeatureQueryOrder order) {
|
426 |
this.order = order;
|
427 |
// TODO optimizar en un array???
|
428 |
|
429 |
} |
430 |
|
431 |
private int myCompare(Object arg0, Object arg1) { |
432 |
if (arg0 == null) { |
433 |
if (arg1 == null) { |
434 |
return 0; |
435 |
} else {
|
436 |
return 1; |
437 |
} |
438 |
} else if (arg1 == null) { |
439 |
if (arg0 == null) { |
440 |
return 0; |
441 |
} else {
|
442 |
return 1; |
443 |
} |
444 |
} |
445 |
if (arg0 instanceof Comparable) { |
446 |
return ((Comparable) arg0).compareTo(arg1); |
447 |
} else if (arg1 instanceof Comparable) { |
448 |
return ((Comparable) arg1).compareTo(arg0) * -1; |
449 |
} |
450 |
|
451 |
if (arg0.equals(arg1)) {
|
452 |
return 0; |
453 |
} else {
|
454 |
return -1; |
455 |
} |
456 |
|
457 |
} |
458 |
|
459 |
@Override
|
460 |
public int compare(Feature f0, Feature f1) { |
461 |
Iterator iter = this.order.iterator(); |
462 |
int returnValue = 0; |
463 |
// Feature f0 = (Feature) arg0;
|
464 |
// Feature f1 = (Feature) arg1;
|
465 |
Object item;
|
466 |
String attrName;
|
467 |
Evaluator evaluator; |
468 |
while (returnValue == 0 && iter.hasNext()) { |
469 |
item = iter.next(); |
470 |
if (item instanceof String) { |
471 |
attrName = (String) item;
|
472 |
returnValue = this
|
473 |
.myCompare(f0.get(attrName), f1 |
474 |
.get(attrName)); |
475 |
} else {
|
476 |
evaluator = (Evaluator) item; |
477 |
try {
|
478 |
returnValue = this.myCompare(evaluator
|
479 |
.evaluate((EvaluatorData) f0), evaluator |
480 |
.evaluate((EvaluatorData) f1)); |
481 |
} catch (EvaluatorException e) {
|
482 |
throw new DataEvaluatorRuntimeException(e); |
483 |
} |
484 |
} |
485 |
} |
486 |
|
487 |
return returnValue;
|
488 |
} |
489 |
|
490 |
} |
491 |
|
492 |
@Override
|
493 |
public void fromJson(JsonObject json) { |
494 |
JsonArray stateMembers = json.getJsonArray("members");
|
495 |
this.members = new ArrayList<>(); |
496 |
for (JsonValue stateMember : stateMembers) {
|
497 |
this.members.add((FeatureQueryOrderMember) Json.toObject(stateMember));
|
498 |
} |
499 |
} |
500 |
|
501 |
@Override
|
502 |
public JsonObjectBuilder toJsonBuilder() {
|
503 |
JsonObjectBuilder state = Json.createObjectBuilder(); |
504 |
state.add("members", members);
|
505 |
return state;
|
506 |
} |
507 |
|
508 |
@Override
|
509 |
public String toString() { |
510 |
try {
|
511 |
ToStringBuilder builder = new ToStringBuilder(this); |
512 |
builder.append("members", this.members, true); |
513 |
return builder.toString();
|
514 |
} catch (Exception e) { |
515 |
return super.toString(); |
516 |
} |
517 |
} |
518 |
} |