svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.plugin / org.gvsig.app / org.gvsig.app.mainplugin / src / main / java / org / gvsig / app / project / ProjectSymbolTable.java @ 44035
History | View | Annotate | Download (20.5 KB)
1 |
package org.gvsig.app.project; |
---|---|
2 |
|
3 |
import java.io.File; |
4 |
import java.io.FileInputStream; |
5 |
import java.util.HashMap; |
6 |
import java.util.Iterator; |
7 |
import java.util.Map; |
8 |
import java.util.Properties; |
9 |
import org.apache.commons.io.IOUtils; |
10 |
import org.apache.commons.lang3.Range; |
11 |
import org.cresques.cts.IProjection; |
12 |
import org.gvsig.app.ApplicationLocator; |
13 |
import org.gvsig.app.ApplicationManager; |
14 |
import org.gvsig.app.project.documents.Document; |
15 |
import org.gvsig.app.project.documents.view.ViewDocument; |
16 |
import org.gvsig.app.project.documents.view.ViewManager; |
17 |
import org.gvsig.expressionevaluator.ExpressionEvaluatorLocator; |
18 |
import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
19 |
import org.gvsig.expressionevaluator.Interpreter; |
20 |
import org.gvsig.expressionevaluator.spi.AbstractFunction; |
21 |
import org.gvsig.expressionevaluator.spi.AbstractSymbolTable; |
22 |
import org.gvsig.fmap.crs.CRSFactory; |
23 |
import org.gvsig.fmap.dal.feature.Feature; |
24 |
import org.gvsig.fmap.dal.feature.FeatureQuery; |
25 |
import org.gvsig.fmap.dal.feature.FeatureSelection; |
26 |
import org.gvsig.fmap.dal.feature.FeatureSet; |
27 |
import org.gvsig.fmap.dal.feature.FeatureStore; |
28 |
import org.gvsig.fmap.geom.Geometry; |
29 |
import org.gvsig.fmap.geom.primitive.Envelope; |
30 |
import org.gvsig.fmap.geom.primitive.Point; |
31 |
import org.gvsig.fmap.mapcontext.MapContext; |
32 |
import org.gvsig.fmap.mapcontext.layers.FLayer; |
33 |
import org.gvsig.fmap.mapcontext.layers.vectorial.FLyrVect; |
34 |
import org.gvsig.fmap.mapcontrol.AreaAndPerimeterCalculator; |
35 |
import org.gvsig.temporarystorage.TemporaryStorageGroup; |
36 |
import org.gvsig.temporarystorage.TemporaryStorageLocator; |
37 |
import org.gvsig.temporarystorage.TemporaryStorageManager; |
38 |
|
39 |
/**
|
40 |
*
|
41 |
* @author jjdelcerro
|
42 |
*/
|
43 |
@SuppressWarnings("UseSpecificCatch") |
44 |
public class ProjectSymbolTable extends AbstractSymbolTable { |
45 |
|
46 |
private abstract class CachedValue<T> { |
47 |
|
48 |
T value = null;
|
49 |
long lastAccess = 0; |
50 |
|
51 |
protected abstract void reload(); |
52 |
|
53 |
public boolean isExpired() { |
54 |
long now = System.currentTimeMillis(); |
55 |
return now - lastAccess > 3000; |
56 |
} |
57 |
|
58 |
public T get() {
|
59 |
if (isExpired()) {
|
60 |
reload(); |
61 |
} |
62 |
lastAccess = System.currentTimeMillis();
|
63 |
return value;
|
64 |
} |
65 |
} |
66 |
|
67 |
private class ProjectValue extends CachedValue<Project> { |
68 |
|
69 |
@Override
|
70 |
protected void reload() { |
71 |
value = ProjectManager.getInstance().getCurrentProject(); |
72 |
} |
73 |
|
74 |
} |
75 |
|
76 |
private class CurrentViewValue extends CachedValue<ViewDocument> { |
77 |
|
78 |
@Override
|
79 |
protected void reload() { |
80 |
ApplicationManager application = ApplicationLocator.getManager(); |
81 |
ViewDocument viewdoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME); |
82 |
value = viewdoc; |
83 |
} |
84 |
|
85 |
} |
86 |
|
87 |
private class CurrentViewEnvelopeValue extends CachedValue<Geometry> { |
88 |
|
89 |
@Override
|
90 |
protected void reload() { |
91 |
ApplicationManager application = ApplicationLocator.getManager(); |
92 |
ViewDocument viewdoc = (ViewDocument) application.getActiveDocument(ViewManager.TYPENAME); |
93 |
if( viewdoc == null ) { |
94 |
value = null;
|
95 |
return;
|
96 |
} |
97 |
value = viewdoc.getMapContext().getViewPort().getEnvelope().getGeometry(); |
98 |
} |
99 |
|
100 |
} |
101 |
|
102 |
private class PropertiesValue extends CachedValue<Map<File, Properties>> { |
103 |
|
104 |
@Override
|
105 |
protected void reload() { |
106 |
value = new HashMap<>(); |
107 |
} |
108 |
} |
109 |
|
110 |
private class CurrentProjectFunction extends AbstractFunction { |
111 |
|
112 |
public CurrentProjectFunction() {
|
113 |
super(
|
114 |
"Project",
|
115 |
"project",
|
116 |
Range.is(0),
|
117 |
"Access to the current project loaded in gvSIG desktop.\n",
|
118 |
"project()",
|
119 |
null,
|
120 |
"Project"
|
121 |
); |
122 |
} |
123 |
|
124 |
@Override
|
125 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
126 |
return currentProject.get();
|
127 |
} |
128 |
|
129 |
} |
130 |
|
131 |
private class FirstSelectedFeatureFunction extends AbstractFunction { |
132 |
|
133 |
public FirstSelectedFeatureFunction() {
|
134 |
super(
|
135 |
"Project",
|
136 |
"firstSelectedFeature",
|
137 |
Range.between(3, 4), |
138 |
"Access to the first selected feature of the layer, and "
|
139 |
+ "return the value of the attribute.",
|
140 |
"firstSelectedFeature({{view}}, layer, attribute, defaulValue)",
|
141 |
new String[]{ |
142 |
"view - String value with the name of a view",
|
143 |
"layer - String value with the name of a layer in the indicated view",
|
144 |
"attribute - String value with the name of the attribute in the indicated layer",
|
145 |
"defaultValue - Optional. Value to use if the indicated "
|
146 |
+ "attribute can not be accessed. For example, if the "
|
147 |
+ "view or layer does not exist, or it does not have "
|
148 |
+ "selected elements."
|
149 |
}, |
150 |
"Object"
|
151 |
); |
152 |
} |
153 |
|
154 |
@Override
|
155 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
156 |
Object defaultValue = null; |
157 |
String viewName = getStr(args, 0); |
158 |
String layerName = getStr(args, 1); |
159 |
String attrName = getStr(args, 2); |
160 |
if (args.length == 4) { |
161 |
defaultValue = getObject(args, 3);
|
162 |
} |
163 |
try {
|
164 |
Project project = currentProject.get(); |
165 |
ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
166 |
if (view == null) { |
167 |
return defaultValue;
|
168 |
} |
169 |
FLayer layer = view.getLayer(layerName); |
170 |
if (!(layer instanceof FLyrVect)) { |
171 |
return defaultValue;
|
172 |
} |
173 |
FeatureSelection selection = ((FLyrVect) layer).getFeatureStore().getFeatureSelection(); |
174 |
if (selection == null || selection.isEmpty()) { |
175 |
return defaultValue;
|
176 |
} |
177 |
Feature feature = selection.first(); |
178 |
if (feature == null) { |
179 |
return defaultValue;
|
180 |
} |
181 |
return feature.get(attrName);
|
182 |
} catch (Exception ex) { |
183 |
return defaultValue;
|
184 |
} |
185 |
} |
186 |
|
187 |
} |
188 |
|
189 |
private class FirstFeatureFunction extends AbstractFunction { |
190 |
|
191 |
public FirstFeatureFunction() {
|
192 |
super(
|
193 |
"Project",
|
194 |
"firstFeature",
|
195 |
Range.between(3, 6), |
196 |
"Access to the first feature of the layer, and "
|
197 |
+ "return the value of the attribute.",
|
198 |
"firstFeature({{view}}, layer, attribute, filter, order, defaulValue)",
|
199 |
new String[]{ |
200 |
"view - String value with the name of a view",
|
201 |
"layer - String value with the name of a layer in the indicated view",
|
202 |
"attribute - String value with the name of the attribute in the indicated layer",
|
203 |
"filter - Optional. String value with a filter expression",
|
204 |
"order - Optional. String value with the order. must be a string with the names of separate fields with commas",
|
205 |
"defaultValue - Optional. Value to use if the indicated "
|
206 |
+ "attribute can not be accessed. For example, if the "
|
207 |
+ "view or layer does not exist."
|
208 |
}, |
209 |
"Object"
|
210 |
); |
211 |
} |
212 |
|
213 |
@Override
|
214 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
215 |
Object defaultValue = null; |
216 |
String filter = null; |
217 |
String order = null; |
218 |
String viewName = getStr(args, 0); |
219 |
String layerName = getStr(args, 1); |
220 |
String attrName = getStr(args, 2); |
221 |
switch (args.length) {
|
222 |
case 4: |
223 |
filter = getStr(args, 3);
|
224 |
break;
|
225 |
case 5: |
226 |
filter = getStr(args, 3);
|
227 |
order = getStr(args, 4);
|
228 |
break;
|
229 |
case 6: |
230 |
filter = getStr(args, 3);
|
231 |
order = getStr(args, 4);
|
232 |
defaultValue = getObject(args, 6);
|
233 |
break;
|
234 |
} |
235 |
try {
|
236 |
Project project = currentProject.get(); |
237 |
ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
238 |
if (view == null) { |
239 |
return defaultValue;
|
240 |
} |
241 |
FLayer layer = view.getLayer(layerName); |
242 |
if (!(layer instanceof FLyrVect)) { |
243 |
return defaultValue;
|
244 |
} |
245 |
FeatureStore store = ((FLyrVect) layer).getFeatureStore(); |
246 |
FeatureSet set; |
247 |
if (filter == null && order == null) { |
248 |
set = store.getFeatureSet(); |
249 |
} else {
|
250 |
FeatureQuery query = store.createFeatureQuery(); |
251 |
if (filter != null) { |
252 |
query.addFilter(filter); |
253 |
} |
254 |
if (order != null) { |
255 |
query.getOrder().add(order); |
256 |
} |
257 |
set = store.getFeatureSet(query); |
258 |
} |
259 |
Feature feature = set.first(); |
260 |
if (feature == null) { |
261 |
return defaultValue;
|
262 |
} |
263 |
return feature.get(attrName);
|
264 |
} catch (Exception ex) { |
265 |
return defaultValue;
|
266 |
} |
267 |
} |
268 |
|
269 |
} |
270 |
|
271 |
private class ViewFunction extends AbstractFunction { |
272 |
|
273 |
public ViewFunction() {
|
274 |
super(
|
275 |
"Project",
|
276 |
"view",
|
277 |
Range.is(1),
|
278 |
"Access to the indicated view",
|
279 |
"view({{viewName}})",
|
280 |
new String[]{ |
281 |
"view - String value with the name of a view"
|
282 |
}, |
283 |
"DocumentView"
|
284 |
); |
285 |
} |
286 |
|
287 |
@Override
|
288 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
289 |
String viewName = getStr(args, 0); |
290 |
Project project = currentProject.get(); |
291 |
ViewDocument view = (ViewDocument) project.getDocument(viewName, ViewManager.TYPENAME); |
292 |
return view;
|
293 |
} |
294 |
|
295 |
} |
296 |
|
297 |
private class ViewBBoxFunction extends AbstractFunction { |
298 |
|
299 |
public ViewBBoxFunction() {
|
300 |
super(
|
301 |
"Project",
|
302 |
"viewbbox",
|
303 |
Range.is(0),
|
304 |
"Return the BBox of the active view.",
|
305 |
"viewbbox()",
|
306 |
null,
|
307 |
"Geometry"
|
308 |
); |
309 |
} |
310 |
|
311 |
@Override
|
312 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
313 |
return currentViewEnvelope.get();
|
314 |
} |
315 |
|
316 |
} |
317 |
|
318 |
|
319 |
private class SavedPointFunction extends AbstractFunction { |
320 |
|
321 |
public SavedPointFunction() {
|
322 |
super(
|
323 |
"Project",
|
324 |
"savedpoint",
|
325 |
Range.is(1),
|
326 |
"Return the value of the saved point with the name indicated.\n"
|
327 |
+ "If the named point do not exists return null.",
|
328 |
"savedpoint({{name}})",
|
329 |
new String[]{ |
330 |
"name - String value with the name of the point"
|
331 |
}, |
332 |
"Geometry"
|
333 |
); |
334 |
} |
335 |
|
336 |
@Override
|
337 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
338 |
TemporaryStorageManager manager = TemporaryStorageLocator.getTemporaryStorageManager(); |
339 |
TemporaryStorageGroup storage = manager.create("Points",Point.class); |
340 |
Geometry value = (Geometry) storage.get(getStr(args, 0));
|
341 |
return value;
|
342 |
} |
343 |
|
344 |
} |
345 |
|
346 |
private class AreaFunction extends AbstractFunction { |
347 |
|
348 |
public AreaFunction() {
|
349 |
super(
|
350 |
"Project",
|
351 |
"Area",
|
352 |
Range.between(2,3), |
353 |
"Calculate the area of the geometry in the indicated units",
|
354 |
"Area({{geometry}}, \"m\")",
|
355 |
new String[]{ |
356 |
"geometry - Geometry",
|
357 |
"Projection - Optional. Projection of the geometry or a string with the projection name",
|
358 |
"units - String value with the name the units to use"
|
359 |
}, |
360 |
"Double"
|
361 |
); |
362 |
} |
363 |
|
364 |
@Override
|
365 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
366 |
int units = 0; |
367 |
IProjection proj = null;
|
368 |
Geometry geom = getGeom(args, 0);
|
369 |
switch( args.length ) {
|
370 |
case 2: |
371 |
units = getUnits(args, 1);
|
372 |
break;
|
373 |
case 3: |
374 |
proj = getProjection(args, 1);
|
375 |
units = getUnits(args, 2);
|
376 |
break;
|
377 |
} |
378 |
if (proj == null) { |
379 |
proj = geom.getProjection(); |
380 |
} |
381 |
AreaAndPerimeterCalculator calculator = new AreaAndPerimeterCalculator();
|
382 |
double area = calculator.area(geom, proj, units);
|
383 |
return area;
|
384 |
} |
385 |
} |
386 |
|
387 |
private class PerimeterFunction extends AbstractFunction { |
388 |
|
389 |
public PerimeterFunction() {
|
390 |
super(
|
391 |
"Project",
|
392 |
"Perimeter",
|
393 |
Range.between(2,3), |
394 |
"Calculate the perimeter of the geometry in the indicated units",
|
395 |
"Perimeter({{geometry}}, \"m\")",
|
396 |
new String[]{ |
397 |
"geometry - Geometry",
|
398 |
"Projection - Optional. Projection of the geometry or a string with the projection name",
|
399 |
"units - String value with the name the units to use"
|
400 |
}, |
401 |
"Double"
|
402 |
); |
403 |
} |
404 |
|
405 |
@Override
|
406 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
407 |
int units = 0; |
408 |
IProjection proj = null;
|
409 |
Geometry geom = getGeom(args, 0);
|
410 |
switch( args.length ) {
|
411 |
case 2: |
412 |
units = getUnits(args, 1);
|
413 |
break;
|
414 |
case 3: |
415 |
proj = getProjection(args, 1);
|
416 |
units = getUnits(args, 2);
|
417 |
break;
|
418 |
} |
419 |
if (proj == null) { |
420 |
proj = geom.getProjection(); |
421 |
} |
422 |
AreaAndPerimeterCalculator calculator = new AreaAndPerimeterCalculator();
|
423 |
double area = calculator.perimeter(geom, proj, units);
|
424 |
return area;
|
425 |
} |
426 |
} |
427 |
|
428 |
private class PropertyFunction extends AbstractFunction { |
429 |
|
430 |
public PropertyFunction() {
|
431 |
super(
|
432 |
"Project",
|
433 |
"property",
|
434 |
Range.between(2, 3), |
435 |
"Access to a property value in a properties file. If the"
|
436 |
+ "indicated filename is not absolute, access it relative"
|
437 |
+ "to the project.",
|
438 |
"property({{filename}}, name, defaultValue)",
|
439 |
new String[]{ |
440 |
"filename - String value with the name of the properties file",
|
441 |
"name - String value with the name of the property to retrieve from the file",
|
442 |
"defaultValue - Optional. Default value if can't access the file or the property",},
|
443 |
"String"
|
444 |
); |
445 |
} |
446 |
|
447 |
@Override
|
448 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
449 |
String filename = getStr(args, 0); |
450 |
String name = getStr(args, 1); |
451 |
String defaultValue = null; |
452 |
if (args.length == 3) { |
453 |
defaultValue = getStr(args, 2);
|
454 |
} |
455 |
|
456 |
File file = new File(filename); |
457 |
if (!file.isAbsolute()) {
|
458 |
Project project = currentProject.get(); |
459 |
if (project.getFile() == null) { |
460 |
return defaultValue;
|
461 |
} |
462 |
file = new File(project.getFile().getParent(), filename); |
463 |
} |
464 |
Map<File, Properties> x = propertiesFiles.get(); |
465 |
Properties properties = x.get(file);
|
466 |
if (properties == null) { |
467 |
properties = new Properties(); |
468 |
FileInputStream in = null; |
469 |
try {
|
470 |
in = new FileInputStream(file); |
471 |
properties.load(in); |
472 |
} catch (Exception ex) { |
473 |
return defaultValue;
|
474 |
} finally {
|
475 |
IOUtils.closeQuietly(in); |
476 |
} |
477 |
x.put(file, properties); |
478 |
} |
479 |
String value = properties.getProperty(name, defaultValue);
|
480 |
return value;
|
481 |
} |
482 |
|
483 |
} |
484 |
|
485 |
ProjectValue currentProject = new ProjectValue();
|
486 |
CurrentViewValue currentView = new CurrentViewValue();
|
487 |
CurrentViewEnvelopeValue currentViewEnvelope = new CurrentViewEnvelopeValue();
|
488 |
PropertiesValue propertiesFiles = new PropertiesValue();
|
489 |
|
490 |
@SuppressWarnings("OverridableMethodCallInConstructor") |
491 |
public ProjectSymbolTable() {
|
492 |
super("Project"); |
493 |
this.addFunction(new CurrentProjectFunction()); |
494 |
this.addFunction(new FirstSelectedFeatureFunction()); |
495 |
this.addFunction(new FirstFeatureFunction()); |
496 |
this.addFunction(new ViewFunction()); |
497 |
this.addFunction(new ViewBBoxFunction()); |
498 |
this.addFunction(new PropertyFunction()); |
499 |
this.addFunction(new AreaFunction()); |
500 |
this.addFunction(new PerimeterFunction()); |
501 |
this.addFunction(new SavedPointFunction()); |
502 |
} |
503 |
|
504 |
private MapContext getMapContext(Feature feature) {
|
505 |
FeatureStore store = feature.getStore(); |
506 |
Project project = ProjectManager.getInstance().getCurrentProject(); |
507 |
project.getDocuments(ViewManager.TYPENAME); |
508 |
for (Document document : project.getDocuments(ViewManager.TYPENAME)) { |
509 |
ViewDocument view = (ViewDocument) document; |
510 |
MapContext mapContext = view.getMapContext(); |
511 |
FLayer layer = getLayer(mapContext, store); |
512 |
if (layer != null) { |
513 |
return mapContext;
|
514 |
} |
515 |
} |
516 |
return null; |
517 |
} |
518 |
|
519 |
private FLayer getLayer(MapContext mapContext, FeatureStore store) {
|
520 |
Iterator<FLayer> it = mapContext.deepiterator();
|
521 |
while (it.hasNext()) {
|
522 |
FLayer layer = it.next(); |
523 |
if (layer instanceof FLyrVect) { |
524 |
FeatureStore layer_store = ((FLyrVect) layer).getFeatureStore(); |
525 |
if (layer_store == store) {
|
526 |
return layer;
|
527 |
} |
528 |
} |
529 |
} |
530 |
return null; |
531 |
} |
532 |
|
533 |
private IProjection getProjection(Object[] args, int i) { |
534 |
Object value = args[i];
|
535 |
if (value == null) { |
536 |
return null; |
537 |
} |
538 |
if (value instanceof IProjection) { |
539 |
return (IProjection) value;
|
540 |
} |
541 |
String code = value.toString();
|
542 |
return CRSFactory.getCRS(code);
|
543 |
} |
544 |
|
545 |
private int getUnits(Object[] args, int i) { |
546 |
Object value = args[i];
|
547 |
if (value == null) { |
548 |
throw new IllegalArgumentException("Illegal unit value 'null'"); |
549 |
} |
550 |
if (value instanceof Number) { |
551 |
return ((Number) value).intValue(); |
552 |
} |
553 |
String name = value.toString();
|
554 |
String[] names = MapContext.getAreaAbbr(); |
555 |
for (int j = 0; j < names.length; j++) { |
556 |
if (name.equalsIgnoreCase(names[j])) {
|
557 |
return j;
|
558 |
} |
559 |
} |
560 |
names = MapContext.getAreaNames(); |
561 |
for (int j = 0; j < names.length; j++) { |
562 |
if (name.equalsIgnoreCase(names[j])) {
|
563 |
return j;
|
564 |
} |
565 |
} |
566 |
throw new IllegalArgumentException("Illegal unit name '" + name + "'"); |
567 |
} |
568 |
|
569 |
public static void selfRegister() { |
570 |
ExpressionEvaluatorManager manager = ExpressionEvaluatorLocator.getManager(); |
571 |
manager.registerSymbolTable(new ProjectSymbolTable(), true); |
572 |
} |
573 |
} |