svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.geometry / org.gvsig.fmap.geometry.operation / src / main / java / org / gvsig / fmap / geom / operation / fromwkt / WKTParser.java @ 40559
History | View | Annotate | Download (21.7 KB)
1 | 40559 | jjdelcerro | /**
|
---|---|---|---|
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 | 40435 | jjdelcerro | package org.gvsig.fmap.geom.operation.fromwkt; |
25 | |||
26 | import java.io.IOException; |
||
27 | import java.io.Reader; |
||
28 | import java.io.StreamTokenizer; |
||
29 | import java.io.StringReader; |
||
30 | import java.util.ArrayList; |
||
31 | |||
32 | import org.gvsig.fmap.geom.Geometry; |
||
33 | import org.gvsig.fmap.geom.GeometryLocator; |
||
34 | import org.gvsig.fmap.geom.GeometryManager; |
||
35 | import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
||
36 | import org.gvsig.fmap.geom.Geometry.TYPES; |
||
37 | import org.gvsig.fmap.geom.aggregate.MultiPoint; |
||
38 | import org.gvsig.fmap.geom.exception.CreateGeometryException; |
||
39 | import org.gvsig.fmap.geom.primitive.Curve; |
||
40 | import org.gvsig.fmap.geom.primitive.GeneralPathX; |
||
41 | import org.gvsig.fmap.geom.primitive.Point; |
||
42 | import org.gvsig.fmap.geom.primitive.Surface; |
||
43 | |||
44 | import com.vividsolutions.jts.geom.Coordinate; |
||
45 | import com.vividsolutions.jts.io.ParseException; |
||
46 | |||
47 | /**
|
||
48 | * Converts a Well-Known Text string to a <code>Geometry</code>.
|
||
49 | * <p>
|
||
50 | * The <code>WKTReader</code> allows
|
||
51 | * extracting <code>Geometry</code> objects from either input streams or
|
||
52 | * internal strings. This allows it to function as a parser to read <code>Geometry</code>
|
||
53 | * objects from text blocks embedded in other data formats (e.g. XML). <P>
|
||
54 | * <p>
|
||
55 | * The Well-known
|
||
56 | * Text format is defined in the <A HREF="http://www.opengis.org/techno/specs.htm">
|
||
57 | * OpenGIS Simple Features Specification for SQL</A> . <P>
|
||
58 | * <p>
|
||
59 | * <B>Note: </B> There is an inconsistency in the SFS. The WKT grammar states
|
||
60 | * that <code>MultiPoints</code> are represented by <code>MULTIPOINT ( ( x y), (x y) )</code>
|
||
61 | * , but the examples show <code>MultiPoint</code>s as <code>MULTIPOINT ( x y, x y )</code>
|
||
62 | * . Other implementations follow the latter syntax, so JTS will adopt it as
|
||
63 | * well.
|
||
64 | *
|
||
65 | * A <code>WKTReader</code> is parameterized by a <code>GeometryFactory</code>
|
||
66 | * , to allow it to create <code>Geometry</code> objects of the appropriate
|
||
67 | * implementation. In particular, the <code>GeometryFactory</code> will
|
||
68 | * determine the <code>PrecisionModel</code> and <code>SRID</code> that is
|
||
69 | * used. <P>
|
||
70 | *
|
||
71 | * The <code>WKTReader</code> will convert the input numbers to the precise
|
||
72 | * internal representation.
|
||
73 | *
|
||
74 | * Reads non-standard "LINEARRING" tags.
|
||
75 | *
|
||
76 | *@version 1.5
|
||
77 | */
|
||
78 | public class WKTParser { |
||
79 | |||
80 | private GeometryManager manager = GeometryLocator.getGeometryManager();
|
||
81 | /**
|
||
82 | * Creates a WKTReader that creates objects using a basic GeometryFactory.
|
||
83 | */
|
||
84 | public WKTParser() {
|
||
85 | } |
||
86 | |||
87 | |||
88 | |||
89 | /**
|
||
90 | * Converts a Well-known Text representation to a <code>Geometry</code>.
|
||
91 | *
|
||
92 | * @param wellKnownText
|
||
93 | * one or more <Geometry Tagged Text>strings (see the OpenGIS
|
||
94 | * Simple Features Specification) separated by whitespace
|
||
95 | * @return a <code>Geometry</code> specified by <code>wellKnownText</code>
|
||
96 | * @throws ParseException
|
||
97 | * if a parsing problem occurs
|
||
98 | */
|
||
99 | public Geometry read(String wellKnownText) throws ParseException { |
||
100 | StringReader reader = new StringReader(wellKnownText); |
||
101 | try {
|
||
102 | return read(reader);
|
||
103 | } |
||
104 | finally {
|
||
105 | reader.close(); |
||
106 | } |
||
107 | } |
||
108 | |||
109 | /**
|
||
110 | * Converts a Well-known Text representation to a <code>Geometry</code>.
|
||
111 | *
|
||
112 | *@param reader a Reader which will return a <Geometry Tagged Text>
|
||
113 | * string (see the OpenGIS Simple Features Specification)
|
||
114 | *@return a <code>Geometry</code> read from <code>reader</code>
|
||
115 | *@throws ParseException if a parsing problem occurs
|
||
116 | */
|
||
117 | public Geometry read(Reader reader) throws ParseException { |
||
118 | StreamTokenizer tokenizer = new StreamTokenizer(reader); |
||
119 | try {
|
||
120 | return readGeometryTaggedText(tokenizer);
|
||
121 | } |
||
122 | catch (IOException e) { |
||
123 | throw new ParseException(e.toString()); |
||
124 | } catch (CreateGeometryException e) {
|
||
125 | throw new ParseException(e.toString()); |
||
126 | } |
||
127 | } |
||
128 | |||
129 | /**
|
||
130 | * Returns the next array of <code>Coordinate</code>s in the stream.
|
||
131 | *
|
||
132 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
133 | * format. The next element returned by the stream should be "(" (the
|
||
134 | * beginning of "(x1 y1, x2 y2, ..., xn yn)") or "EMPTY".
|
||
135 | *@return the next array of <code>Coordinate</code>s in the
|
||
136 | * stream, or an empty array if "EMPTY" is the next element returned by
|
||
137 | * the stream.
|
||
138 | *@throws IOException if an I/O error occurs
|
||
139 | *@throws ParseException if an unexpected token was encountered
|
||
140 | */
|
||
141 | private Coordinate[] getCoordinates(StreamTokenizer tokenizer) |
||
142 | throws IOException, ParseException |
||
143 | { |
||
144 | String nextToken = getNextEmptyOrOpener(tokenizer);
|
||
145 | if (nextToken.equals("EMPTY")) { |
||
146 | return new Coordinate[]{}; |
||
147 | } |
||
148 | ArrayList coordinates = new ArrayList(); |
||
149 | coordinates.add(getPreciseCoordinate(tokenizer)); |
||
150 | nextToken = getNextCloserOrComma(tokenizer); |
||
151 | while (nextToken.equals(",")) { |
||
152 | coordinates.add(getPreciseCoordinate(tokenizer)); |
||
153 | nextToken = getNextCloserOrComma(tokenizer); |
||
154 | } |
||
155 | Coordinate[] array = new Coordinate[coordinates.size()]; |
||
156 | return (Coordinate[]) coordinates.toArray(array); |
||
157 | } |
||
158 | |||
159 | private Coordinate getPreciseCoordinate(StreamTokenizer tokenizer) |
||
160 | throws IOException, ParseException |
||
161 | { |
||
162 | Coordinate coord = new Coordinate();
|
||
163 | coord.x = getNextNumber(tokenizer); |
||
164 | coord.y = getNextNumber(tokenizer); |
||
165 | if (isNumberNext(tokenizer)) {
|
||
166 | coord.z = getNextNumber(tokenizer); |
||
167 | } |
||
168 | return coord;
|
||
169 | } |
||
170 | private boolean isNumberNext(StreamTokenizer tokenizer) throws IOException { |
||
171 | try {
|
||
172 | return tokenizer.nextToken() == StreamTokenizer.TT_NUMBER; |
||
173 | } |
||
174 | finally {
|
||
175 | tokenizer.pushBack(); |
||
176 | } |
||
177 | } |
||
178 | /**
|
||
179 | * Returns the next number in the stream.
|
||
180 | *
|
||
181 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
182 | * format. The next token must be a number.
|
||
183 | *@return the next number in the stream
|
||
184 | *@throws ParseException if the next token is not a number
|
||
185 | *@throws IOException if an I/O error occurs
|
||
186 | */
|
||
187 | private double getNextNumber(StreamTokenizer tokenizer) throws IOException, |
||
188 | ParseException {
|
||
189 | int type = tokenizer.nextToken();
|
||
190 | switch (type) {
|
||
191 | case StreamTokenizer.TT_EOF: |
||
192 | throw new ParseException("Expected number but encountered end of stream"); |
||
193 | case StreamTokenizer.TT_EOL: |
||
194 | throw new ParseException("Expected number but encountered end of line"); |
||
195 | case StreamTokenizer.TT_NUMBER: |
||
196 | return tokenizer.nval;
|
||
197 | case StreamTokenizer.TT_WORD: |
||
198 | throw new ParseException("Expected number but encountered word: " + |
||
199 | tokenizer.sval); |
||
200 | case '(': |
||
201 | throw new ParseException("Expected number but encountered '('"); |
||
202 | case ')': |
||
203 | throw new ParseException("Expected number but encountered ')'"); |
||
204 | case ',': |
||
205 | throw new ParseException("Expected number but encountered ','"); |
||
206 | } |
||
207 | return 0; |
||
208 | } |
||
209 | |||
210 | /**
|
||
211 | * Returns the next "EMPTY" or "(" in the stream as uppercase text.
|
||
212 | *
|
||
213 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
214 | * format. The next token must be "EMPTY" or "(".
|
||
215 | *@return the next "EMPTY" or "(" in the stream as uppercase
|
||
216 | * text.
|
||
217 | *@throws ParseException if the next token is not "EMPTY" or "("
|
||
218 | *@throws IOException if an I/O error occurs
|
||
219 | */
|
||
220 | private String getNextEmptyOrOpener(StreamTokenizer tokenizer) throws IOException, ParseException { |
||
221 | String nextWord = getNextWord(tokenizer);
|
||
222 | if (nextWord.equals("EMPTY") || nextWord.equals("(")) { |
||
223 | return nextWord;
|
||
224 | } |
||
225 | throw new ParseException("Expected 'EMPTY' or '(' but encountered '" + |
||
226 | nextWord + "'");
|
||
227 | } |
||
228 | |||
229 | /**
|
||
230 | * Returns the next ")" or "," in the stream.
|
||
231 | *
|
||
232 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
233 | * format. The next token must be ")" or ",".
|
||
234 | *@return the next ")" or "," in the stream
|
||
235 | *@throws ParseException if the next token is not ")" or ","
|
||
236 | *@throws IOException if an I/O error occurs
|
||
237 | */
|
||
238 | private String getNextCloserOrComma(StreamTokenizer tokenizer) throws IOException, ParseException { |
||
239 | String nextWord = getNextWord(tokenizer);
|
||
240 | if (nextWord.equals(",") || nextWord.equals(")")) { |
||
241 | return nextWord;
|
||
242 | } |
||
243 | throw new ParseException("Expected ')' or ',' but encountered '" + nextWord |
||
244 | + "'");
|
||
245 | } |
||
246 | |||
247 | /**
|
||
248 | * Returns the next ")" in the stream.
|
||
249 | *
|
||
250 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
251 | * format. The next token must be ")".
|
||
252 | *@return the next ")" in the stream
|
||
253 | *@throws ParseException if the next token is not ")"
|
||
254 | *@throws IOException if an I/O error occurs
|
||
255 | */
|
||
256 | private String getNextCloser(StreamTokenizer tokenizer) throws IOException, ParseException { |
||
257 | String nextWord = getNextWord(tokenizer);
|
||
258 | if (nextWord.equals(")")) { |
||
259 | return nextWord;
|
||
260 | } |
||
261 | throw new ParseException("Expected ')' but encountered '" + nextWord + "'"); |
||
262 | } |
||
263 | |||
264 | /**
|
||
265 | * Returns the next word in the stream as uppercase text.
|
||
266 | *
|
||
267 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
268 | * format. The next token must be a word.
|
||
269 | *@return the next word in the stream as uppercase text
|
||
270 | *@throws ParseException if the next token is not a word
|
||
271 | *@throws IOException if an I/O error occurs
|
||
272 | */
|
||
273 | private String getNextWord(StreamTokenizer tokenizer) throws IOException, ParseException { |
||
274 | int type = tokenizer.nextToken();
|
||
275 | switch (type) {
|
||
276 | case StreamTokenizer.TT_EOF: |
||
277 | throw new ParseException("Expected word but encountered end of stream"); |
||
278 | case StreamTokenizer.TT_EOL: |
||
279 | throw new ParseException("Expected word but encountered end of line"); |
||
280 | case StreamTokenizer.TT_NUMBER: |
||
281 | throw new ParseException("Expected word but encountered number: " + |
||
282 | tokenizer.nval); |
||
283 | case StreamTokenizer.TT_WORD: |
||
284 | return tokenizer.sval.toUpperCase();
|
||
285 | case '(': |
||
286 | return "("; |
||
287 | case ')': |
||
288 | return ")"; |
||
289 | case ',': |
||
290 | return ","; |
||
291 | } |
||
292 | // Assert.shouldNeverReachHere("Encountered unexpected StreamTokenizer type: " + type);
|
||
293 | return null; |
||
294 | } |
||
295 | |||
296 | /**
|
||
297 | * Creates a <code>Geometry</code> using the next token in the stream.
|
||
298 | *
|
||
299 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
300 | * format. The next tokens must form a <Geometry Tagged Text>.
|
||
301 | *@return a <code>Geometry</code> specified by the next token
|
||
302 | * in the stream
|
||
303 | *@throws ParseException if the coordinates used to create a <code>Polygon</code>
|
||
304 | * shell and holes do not form closed linestrings, or if an unexpected
|
||
305 | * token was encountered
|
||
306 | *@throws IOException if an I/O error occurs
|
||
307 | * @throws CreateGeometryException
|
||
308 | */
|
||
309 | private Geometry readGeometryTaggedText(StreamTokenizer tokenizer) throws IOException, ParseException, CreateGeometryException{ |
||
310 | String type = getNextWord(tokenizer);
|
||
311 | if (type.equals("POINT")) { |
||
312 | return readPointText(tokenizer);
|
||
313 | } |
||
314 | else if (type.equals("LINESTRING")) { |
||
315 | return readLineStringText(tokenizer);
|
||
316 | } |
||
317 | else if (type.equals("LINEARRING")) { |
||
318 | return readLinearRingText(tokenizer);
|
||
319 | } |
||
320 | else if (type.equals("POLYGON")) { |
||
321 | return readPolygonText(tokenizer);
|
||
322 | } |
||
323 | else if (type.equals("MULTIPOINT")) { |
||
324 | return readMultiPointText(tokenizer);
|
||
325 | } |
||
326 | else if (type.equals("MULTILINESTRING")) { |
||
327 | return readMultiLineStringText(tokenizer);
|
||
328 | } |
||
329 | else if (type.equals("MULTIPOLYGON")) { |
||
330 | return readMultiPolygonText(tokenizer);
|
||
331 | } |
||
332 | /* else if (type.equals("GEOMETRYCOLLECTION")) {
|
||
333 | return readGeometryCollectionText(tokenizer);
|
||
334 | } */
|
||
335 | System.err.println("Unknown type: " + type); |
||
336 | throw new ParseException("Unknown type: " + type); |
||
337 | } |
||
338 | |||
339 | /**
|
||
340 | * Creates a <code>Point</code> using the next token in the stream.
|
||
341 | *
|
||
342 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
343 | * format. The next tokens must form a <Point Text>.
|
||
344 | *@return a <code>Point</code> specified by the next token in
|
||
345 | * the stream
|
||
346 | *@throws IOException if an I/O error occurs
|
||
347 | *@throws ParseException if an unexpected token was encountered
|
||
348 | * @throws IllegalAccessException
|
||
349 | * @throws InstantiationException
|
||
350 | * @throws CreateGeometryException
|
||
351 | */
|
||
352 | private Geometry readPointText(StreamTokenizer tokenizer) throws IOException, ParseException, CreateGeometryException { |
||
353 | String nextToken = getNextEmptyOrOpener(tokenizer);
|
||
354 | if (nextToken.equals("EMPTY")) { |
||
355 | return null; |
||
356 | } |
||
357 | Coordinate c = getPreciseCoordinate(tokenizer); |
||
358 | Point point = (Point)manager.create(TYPES.POINT, SUBTYPES.GEOM2D); |
||
359 | point.setX(c.x); |
||
360 | point.setY(c.y); |
||
361 | getNextCloser(tokenizer); |
||
362 | |||
363 | return point;
|
||
364 | } |
||
365 | |||
366 | /**
|
||
367 | * Creates a <code>LineString</code> using the next token in the stream.
|
||
368 | *
|
||
369 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
370 | * format. The next tokens must form a <LineString Text>.
|
||
371 | *@return a <code>LineString</code> specified by the next
|
||
372 | * token in the stream
|
||
373 | *@throws IOException if an I/O error occurs
|
||
374 | *@throws ParseException if an unexpected token was encountered
|
||
375 | * @throws CreateGeometryException
|
||
376 | * @throws IllegalAccessException
|
||
377 | * @throws InstantiationException
|
||
378 | */
|
||
379 | private Geometry readLineStringText(StreamTokenizer tokenizer) throws IOException, ParseException, CreateGeometryException { |
||
380 | Coordinate[] arrayC = getCoordinates(tokenizer);
|
||
381 | GeneralPathX gp = new GeneralPathX();
|
||
382 | gp.moveTo(arrayC[0].x,arrayC[0].y); |
||
383 | for (int i=1;i < arrayC.length; i++) |
||
384 | { |
||
385 | gp.lineTo(arrayC[i].x, arrayC[i].y); |
||
386 | } |
||
387 | // IJM: Cambiado Surface por Curve
|
||
388 | Curve curve = (Curve) manager.create(TYPES.CURVE, SUBTYPES.GEOM2D); |
||
389 | curve.setGeneralPath(gp); |
||
390 | return curve;
|
||
391 | } |
||
392 | |||
393 | /**
|
||
394 | * Creates a <code>LinearRing</code> using the next token in the stream.
|
||
395 | *
|
||
396 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
397 | * format. The next tokens must form a <LineString Text>.
|
||
398 | *@return a <code>LinearRing</code> specified by the next
|
||
399 | * token in the stream
|
||
400 | *@throws IOException if an I/O error occurs
|
||
401 | *@throws ParseException if the coordinates used to create the <code>LinearRing</code>
|
||
402 | * do not form a closed linestring, or if an unexpected token was
|
||
403 | * encountered
|
||
404 | * @throws IllegalAccessException
|
||
405 | * @throws InstantiationException
|
||
406 | * @throws CreateGeometryException
|
||
407 | */
|
||
408 | private Geometry readLinearRingText(StreamTokenizer tokenizer) |
||
409 | throws IOException, ParseException, CreateGeometryException |
||
410 | { |
||
411 | Coordinate[] arrayC = getCoordinates(tokenizer);
|
||
412 | GeneralPathX gp = new GeneralPathX();
|
||
413 | gp.moveTo(arrayC[0].x, arrayC[0].y); |
||
414 | for (int i=1;i < arrayC.length; i++) |
||
415 | { |
||
416 | gp.lineTo(arrayC[i].x, arrayC[i].y); |
||
417 | } |
||
418 | Surface surface = (Surface)manager.create(TYPES.SURFACE, SUBTYPES.GEOM2D); |
||
419 | surface.setGeneralPath(gp); |
||
420 | return surface;
|
||
421 | } |
||
422 | |||
423 | /**
|
||
424 | * Creates a <code>MultiPoint</code> using the next token in the stream.
|
||
425 | *
|
||
426 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
427 | * format. The next tokens must form a <MultiPoint Text>.
|
||
428 | *@return a <code>MultiPoint</code> specified by the next
|
||
429 | * token in the stream
|
||
430 | *@throws IOException if an I/O error occurs
|
||
431 | *@throws ParseException if an unexpected token was encountered
|
||
432 | * @throws IllegalAccessException
|
||
433 | * @throws InstantiationException
|
||
434 | * @throws CreateGeometryException
|
||
435 | */
|
||
436 | private Geometry readMultiPointText(StreamTokenizer tokenizer) throws IOException, ParseException, CreateGeometryException { |
||
437 | Coordinate[] coords = getCoordinates(tokenizer);
|
||
438 | MultiPoint multiPoint = (MultiPoint)manager.create(TYPES.MULTIPOINT, SUBTYPES.GEOM2D); |
||
439 | for (int i=0; i < coords.length; i++) |
||
440 | { |
||
441 | Point point = (Point)manager.create(TYPES.POINT, SUBTYPES.GEOM2D); |
||
442 | point.setX(coords[i].x); |
||
443 | point.setY(coords[i].y); |
||
444 | multiPoint.addPoint(point); |
||
445 | } |
||
446 | |||
447 | return multiPoint;
|
||
448 | } |
||
449 | |||
450 | |||
451 | /**
|
||
452 | * Creates a <code>Polygon</code> using the next token in the stream.
|
||
453 | *
|
||
454 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
455 | * format. The next tokens must form a <Polygon Text>.
|
||
456 | *@return a <code>Polygon</code> specified by the next token
|
||
457 | * in the stream
|
||
458 | *@throws ParseException if the coordinates used to create the <code>Polygon</code>
|
||
459 | * shell and holes do not form closed linestrings, or if an unexpected
|
||
460 | * token was encountered.
|
||
461 | *@throws IOException if an I/O error occurs
|
||
462 | * @throws IllegalAccessException
|
||
463 | * @throws InstantiationException
|
||
464 | * @throws CreateGeometryException
|
||
465 | */
|
||
466 | private Geometry readPolygonText(StreamTokenizer tokenizer) throws IOException, ParseException, CreateGeometryException { |
||
467 | String nextToken = getNextEmptyOrOpener(tokenizer);
|
||
468 | if (nextToken.equals("EMPTY")) { |
||
469 | return null; |
||
470 | } |
||
471 | ArrayList holes = new ArrayList(); |
||
472 | Geometry shell = readLinearRingText(tokenizer); |
||
473 | nextToken = getNextCloserOrComma(tokenizer); |
||
474 | while (nextToken.equals(",")) { |
||
475 | Geometry hole = readLinearRingText(tokenizer); |
||
476 | holes.add(hole); |
||
477 | nextToken = getNextCloserOrComma(tokenizer); |
||
478 | } |
||
479 | // LinearRing[] array = new LinearRing[holes.size()];
|
||
480 | return shell; //geometryFactory.createPolygon(shell, (LinearRing[]) holes.toArray(array)); |
||
481 | } |
||
482 | |||
483 | /**
|
||
484 | * Creates a <code>MultiLineString</code> using the next token in the stream.
|
||
485 | *
|
||
486 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
487 | * format. The next tokens must form a <MultiLineString Text>.
|
||
488 | *@return a <code>MultiLineString</code> specified by the
|
||
489 | * next token in the stream
|
||
490 | *@throws IOException if an I/O error occurs
|
||
491 | *@throws ParseException if an unexpected token was encountered
|
||
492 | * @throws IllegalAccessException
|
||
493 | * @throws InstantiationException
|
||
494 | * @throws CreateGeometryException
|
||
495 | */
|
||
496 | private Geometry readMultiLineStringText(StreamTokenizer tokenizer) throws IOException, ParseException, CreateGeometryException { |
||
497 | // TODO: HACER ESTO BIEN, CON UN GENERAL PATH
|
||
498 | String nextToken = getNextEmptyOrOpener(tokenizer);
|
||
499 | if (nextToken.equals("EMPTY")) { |
||
500 | return null; |
||
501 | } |
||
502 | ArrayList lineStrings = new ArrayList(); |
||
503 | Geometry lineString = readLineStringText(tokenizer); |
||
504 | lineStrings.add(lineString); |
||
505 | nextToken = getNextCloserOrComma(tokenizer); |
||
506 | while (nextToken.equals(",")) { |
||
507 | lineString = readLineStringText(tokenizer); |
||
508 | lineStrings.add(lineString); |
||
509 | nextToken = getNextCloserOrComma(tokenizer); |
||
510 | } |
||
511 | // LineString[] array = new LineString[lineStrings.size()];
|
||
512 | return lineString; // geometryFactory.createMultiLineString((LineString[]) lineStrings.toArray(array)); |
||
513 | } |
||
514 | |||
515 | /**
|
||
516 | * Creates a <code>MultiPolygon</code> using the next token in the stream.
|
||
517 | *
|
||
518 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
519 | * format. The next tokens must form a <MultiPolygon Text>.
|
||
520 | *@return a <code>MultiPolygon</code> specified by the next
|
||
521 | * token in the stream, or if if the coordinates used to create the
|
||
522 | * <code>Polygon</code> shells and holes do not form closed linestrings.
|
||
523 | *@throws IOException if an I/O error occurs
|
||
524 | *@throws ParseException if an unexpected token was encountered
|
||
525 | * @throws CreateGeometryException
|
||
526 | */
|
||
527 | // TODO:
|
||
528 | private Geometry readMultiPolygonText(StreamTokenizer tokenizer) throws IOException, ParseException, CreateGeometryException { |
||
529 | String nextToken = getNextEmptyOrOpener(tokenizer);
|
||
530 | if (nextToken.equals("EMPTY")) { |
||
531 | return null; |
||
532 | } |
||
533 | ArrayList polygons = new ArrayList(); |
||
534 | Geometry polygon = readPolygonText(tokenizer); |
||
535 | /* polygons.add(polygon);
|
||
536 | nextToken = getNextCloserOrComma(tokenizer);
|
||
537 | while (nextToken.equals(",")) {
|
||
538 | polygon = readPolygonText(tokenizer);
|
||
539 | polygons.add(polygon);
|
||
540 | nextToken = getNextCloserOrComma(tokenizer);
|
||
541 | } */
|
||
542 | // Polygon[] array = new Polygon[polygons.size()];
|
||
543 | return polygon; //geometryFactory.createMultiPolygon((Polygon[]) polygons.toArray(array)); |
||
544 | } |
||
545 | |||
546 | /**
|
||
547 | * Creates a <code>GeometryCollection</code> using the next token in the
|
||
548 | * stream.
|
||
549 | *
|
||
550 | *@param tokenizer tokenizer over a stream of text in Well-known Text
|
||
551 | * format. The next tokens must form a <GeometryCollection Text>.
|
||
552 | *@return a <code>GeometryCollection</code> specified by the
|
||
553 | * next token in the stream
|
||
554 | *@throws ParseException if the coordinates used to create a <code>Polygon</code>
|
||
555 | * shell and holes do not form closed linestrings, or if an unexpected
|
||
556 | * token was encountered
|
||
557 | *@throws IOException if an I/O error occurs
|
||
558 | */
|
||
559 | // TODO:
|
||
560 | /* private GeometryCollection readGeometryCollectionText(StreamTokenizer tokenizer) throws IOException, ParseException {
|
||
561 | String nextToken = getNextEmptyOrOpener(tokenizer);
|
||
562 | if (nextToken.equals("EMPTY")) {
|
||
563 | return geometryFactory.createGeometryCollection(new Geometry[]{});
|
||
564 | }
|
||
565 | ArrayList geometries = new ArrayList();
|
||
566 | Geometry geometry = readGeometryTaggedText(tokenizer);
|
||
567 | geometries.add(geometry);
|
||
568 | nextToken = getNextCloserOrComma(tokenizer);
|
||
569 | while (nextToken.equals(",")) {
|
||
570 | geometry = readGeometryTaggedText(tokenizer);
|
||
571 | geometries.add(geometry);
|
||
572 | nextToken = getNextCloserOrComma(tokenizer);
|
||
573 | }
|
||
574 | Geometry[] array = new Geometry[geometries.size()];
|
||
575 | return geometryFactory.createGeometryCollection((Geometry[]) geometries.toArray(array));
|
||
576 | } */
|
||
577 | } |