Source Code Cross Referenced for CrossesIntegrity.java in  » GIS » GeoTools-2.4.1 » org » geotools » validation » relate » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » GIS » GeoTools 2.4.1 » org.geotools.validation.relate 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *    GeoTools - OpenSource mapping toolkit
003:         *    http://geotools.org
004:         *    (C) 2004-2006, Geotools Project Managment Committee (PMC)
005:         *    (C) 2004 TOPP - www.openplans.org
006:         *
007:         *    This library is free software; you can redistribute it and/or
008:         *    modify it under the terms of the GNU Lesser General Public
009:         *    License as published by the Free Software Foundation; either
010:         *    version 2.1 of the License, or (at your option) any later version.
011:         *
012:         *    This library is distributed in the hope that it will be useful,
013:         *    but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
015:         *    Lesser General Public License for more details.
016:         */
017:        package org.geotools.validation.relate;
018:
019:        import java.io.IOException;
020:        import java.util.HashSet;
021:        import java.util.Map;
022:        import java.util.logging.Logger;
023:
024:        import org.geotools.feature.FeatureIterator;
025:        import org.geotools.data.FeatureSource;
026:        import org.geotools.factory.FactoryConfigurationError;
027:        import org.geotools.feature.Feature;
028:        import org.geotools.feature.FeatureCollection;
029:        import org.geotools.feature.FeatureIterator;
030:        import org.geotools.feature.FeatureType;
031:        import org.geotools.filter.AttributeExpression;
032:        import org.geotools.filter.BBoxExpression;
033:        import org.geotools.filter.Filter;
034:        import org.geotools.filter.FilterFactory;
035:        import org.geotools.filter.FilterFactoryFinder;
036:        import org.geotools.filter.GeometryFilter;
037:        import org.geotools.filter.IllegalFilterException;
038:        import org.geotools.validation.ValidationResults;
039:
040:        import com.vividsolutions.jts.geom.Envelope;
041:        import com.vividsolutions.jts.geom.Geometry;
042:
043:        /**
044:         * CrossesIntegrity<br>
045:         * @author bowens, ptozer<br>
046:         * Created Apr 27, 2004<br>
047:         * @source $URL: http://svn.geotools.org/geotools/tags/2.4.1/modules/extension/validation/src/main/java/org/geotools/validation/relate/CrossesIntegrity.java $
048:         * @version <br>
049:         * 
050:         * <b>Puropse:</b><br>
051:         * <p>
052:         * Tests to see if a Geometry crosses another Geometry.
053:         * 
054:         * <b>Description:</b><br>
055:         * <p>
056:         * If only one layer is provided, the geometries of that layer are compared with each other.
057:         * If two layers are provided, then the geometries are compared across the layers.
058:         * </p>
059:         * 
060:         * <b>Usage:</b><br>
061:         * <p>
062:         * 		CrossesIntegrity cross = new CrossesIntegrity();
063:         *		cross.setExpected(false);
064:         *		cross.setGeomTypeRefA("my:line");
065:         *		
066:         *		Map map = new HashMap();
067:         *		try
068:         *		{
069:         *			map.put("my:line", mds.getFeatureSource("line"));
070:         *		} catch (IOException e1)
071:         *		{
072:         *			e1.printStackTrace();
073:         *		}
074:         *		
075:         *		try
076:         *		{
077:         *			assertFalse(cross.validate(map, lineBounds, vr));
078:         *		} catch (Exception e)
079:         *		{
080:         *			e.printStackTrace();
081:         *		}
082:         * </p>
083:         */
084:        public class CrossesIntegrity extends RelationIntegrity {
085:            private static final Logger LOGGER = org.geotools.util.logging.Logging
086:                    .getLogger("org.geotools.validation");
087:            private static HashSet usedIDs;
088:
089:            /**
090:             * CrossesIntegrity Constructor
091:             * 
092:             */
093:            public CrossesIntegrity() {
094:                super ();
095:                usedIDs = new HashSet(); //TODO: remove me later, memory inefficient
096:            }
097:
098:            /* (non-Javadoc)
099:             * @see org.geotools.validation.IntegrityValidation#validate(java.util.Map, com.vividsolutions.jts.geom.Envelope, org.geotools.validation.ValidationResults)
100:             */
101:            public boolean validate(Map layers, Envelope envelope,
102:                    ValidationResults results) throws Exception {
103:                LOGGER.finer("Starting test " + getName() + " ("
104:                        + getClass().getName() + ")");
105:                String typeRef1 = getGeomTypeRefA();
106:                LOGGER.finer(typeRef1 + ": looking up FeatureSource ");
107:                FeatureSource geomSource1 = (FeatureSource) layers
108:                        .get(typeRef1);
109:                LOGGER.finer(typeRef1 + ": found "
110:                        + geomSource1.getSchema().getTypeName());
111:
112:                String typeRef2 = getGeomTypeRefB();
113:                if (typeRef2 == EMPTY || typeRef1.equals(typeRef2))
114:                    return validateSingleLayer(geomSource1, isExpected(),
115:                            results, envelope);
116:                else {
117:                    LOGGER.finer(typeRef2 + ": looking up FeatureSource ");
118:                    FeatureSource geomSource2 = (FeatureSource) layers
119:                            .get(typeRef2);
120:                    LOGGER.finer(typeRef2 + ": found "
121:                            + geomSource2.getSchema().getTypeName());
122:                    return validateMultipleLayers(geomSource1, geomSource2,
123:                            isExpected(), results, envelope);
124:                }
125:
126:            }
127:
128:            /**
129:             * <b>validateMultipleLayers Purpose:</b> <br>
130:             * <p>
131:             * This validation tests for a geometry crosses another geometry.
132:             * Uses JTS' Geometry.crosses(Geometry) method.
133:             * The DE-9IM intersection matrix for crosses is
134:             * T*T****** (for a point and a curve, a point and an area or a line and an area)
135:             * 0******** (for two curves)
136:             * </p>
137:             * 
138:             * <b>Description:</b><br>
139:             * <p>
140:             * The function filters the FeatureSources using the given bounding box.
141:             * It creates iterators over both filtered FeatureSources. It calls overlaps() and contains()using the
142:             * geometries in the FeatureSource layers. Tests the results of the method call against
143:             * the given expected results. Returns true if the returned results and the expected results 
144:             * are true, false otherwise.
145:             * 
146:             * </p>
147:             * 
148:             * Author: bowens<br>
149:             * Created on: Apr 27, 2004<br>
150:             * @param featureSourceA - the FeatureSource to pull the original geometries from. This geometry is the one that is tested for overlaping with the other
151:             * @param featureSourceB - the FeatureSource to pull the other geometries from - these geometries will be those that may overlap the first geometry
152:             * @param expected - boolean value representing the user's expected outcome of the test
153:             * @param results - ValidationResults
154:             * @param bBox - Envelope - the bounding box within which to perform the overlaps() and contains()
155:             * @return boolean result of the test
156:             * @throws Exception - IOException if iterators improperly closed
157:             */
158:            private boolean validateMultipleLayers(
159:                    FeatureSource featureSourceA, FeatureSource featureSourceB,
160:                    boolean expected, ValidationResults results, Envelope bBox)
161:                    throws Exception {
162:                boolean success = true;
163:
164:                FilterFactory ff = FilterFactoryFinder.createFilterFactory();
165:                Filter filter = null;
166:
167:                //JD: fix this!!
168:                //filter = (Filter) ff.createBBoxExpression(bBox);
169:
170:                FeatureCollection featureResultsA = featureSourceA
171:                        .getFeatures(filter);
172:                FeatureCollection featureResultsB = featureSourceB
173:                        .getFeatures(filter);
174:
175:                FeatureIterator fr1 = null;
176:                FeatureIterator fr2 = null;
177:                try {
178:                    fr1 = featureResultsA.features();
179:
180:                    if (fr1 == null)
181:                        return success;
182:
183:                    while (fr1.hasNext()) {
184:                        Feature f1 = fr1.next();
185:                        Geometry g1 = f1.getDefaultGeometry();
186:                        fr2 = featureResultsB.features();
187:
188:                        while (fr2 != null && fr2.hasNext()) {
189:                            Feature f2 = fr2.next();
190:                            Geometry g2 = f2.getDefaultGeometry();
191:                            //System.out.println("Do the two overlap?->" + g1.overlaps(g2));
192:                            //System.out.println("Does the one contain the other?->" + g1.contains(g2));
193:                            if (g1.overlaps(g2) != expected
194:                                    || g1.contains(g2) != expected) {
195:                                results.error(f1, f1.getDefaultGeometry()
196:                                        .getGeometryType()
197:                                        + " "
198:                                        + getGeomTypeRefA()
199:                                        + " overlapped "
200:                                        + getGeomTypeRefB()
201:                                        + "("
202:                                        + f2.getID()
203:                                        + "), Result was not " + expected);
204:                                success = false;
205:                            }
206:                        }
207:                    }
208:                } finally {
209:                    fr1.close();
210:                    if (fr2 != null)
211:                        fr2.close();
212:                }
213:
214:                return success;
215:            }
216:
217:            /**
218:             * <b>validateSingleLayer Purpose:</b> <br>
219:             * <p>
220:             * This validation tests for a geometry crosses another geometry.
221:             * Uses JTS' Geometry.crosses(Geometry) method.
222:             * The DE-9IM intersection matrix for crosses is
223:             * T*T****** (for a point and a curve, a point and an area or a line and an area)
224:             * 0******** (for two curves)
225:             * </p>
226:             * 
227:             * <b>Description:</b><br>
228:             * <p>
229:             * The function filters the FeatureSource using the given bounding box.
230:             * It creates iterators over the filtered FeatureSource. It calls overlaps() and contains() using the
231:             * geometries in the FeatureSource layer. Tests the results of the method calls against
232:             * the given expected results. Returns true if the returned results and the expected results 
233:             * are true, false otherwise.
234:             * 
235:             * </p>	 * 
236:             * Author: bowens<br>
237:             * Created on: Apr 27, 2004<br>
238:             * @param featureSourceA - the FeatureSource to pull the original geometries from. This geometry is the one that is tested for overlapping itself
239:             * @param expected - boolean value representing the user's expected outcome of the test
240:             * @param results - ValidationResults
241:             * @param bBox - Envelope - the bounding box within which to perform the overlaps() and contains()
242:             * @return boolean result of the test
243:             * @throws Exception - IOException if iterators improperly closed
244:             */
245:            private boolean validateSingleLayer(FeatureSource featureSourceA,
246:                    boolean expected, ValidationResults results, Envelope bBox)
247:                    throws Exception {
248:                boolean success = true;
249:
250:                FeatureType ft = featureSourceA.getSchema();
251:
252:                Filter filter = filterBBox(bBox, ft);
253:
254:                //FeatureResults featureResults = featureSourceA.getFeatures(filter);
255:                FeatureCollection featureResults = featureSourceA.getFeatures();
256:
257:                FeatureIterator fr1 = null;
258:                FeatureIterator fr2 = null;
259:                try {
260:                    fr1 = featureResults.features();
261:
262:                    if (fr1 == null)
263:                        return success;
264:
265:                    while (fr1.hasNext()) {
266:                        //System.out.println("Single layer Outer loop count: " + loopCt1);
267:                        Feature f1 = fr1.next();
268:                        //				System.out.println("overlapFilter " + overlapsFilter.contains(f1));
269:                        //				System.out.println("containsFilter " + containsFilter.contains(f1));
270:                        //System.out.println("Filter " + filter.contains(f1));
271:                        //				System.out.println("f1 = " + f1.getDefaultGeometry().getEnvelope());
272:                        //				System.out.println("env1 = " + bBox);
273:
274:                        Geometry g1 = f1.getDefaultGeometry();
275:                        Filter filter2 = filterBBox(g1.getEnvelope()
276:                                .getEnvelopeInternal(), ft);
277:
278:                        //FeatureResults featureResults2 = featureSourceA.getFeatures(filter2);
279:                        FeatureCollection featureResults2 = featureSourceA
280:                                .getFeatures();
281:                        fr2 = featureResults2.features();
282:                        while (fr2 != null && fr2.hasNext()) {
283:                            Feature f2 = fr2.next();
284:                            //System.out.println("Filter2 " + filter2.contains(f2));
285:                            Geometry g2 = f2.getDefaultGeometry();
286:                            //System.out.println("Do the two overlap?->" + g1.overlaps(g2));
287:                            //System.out.println("Does the one contain the other?->" + g1.contains(g2));
288:                            if (!usedIDs.contains(f2.getID())) {
289:
290:                                if (!f1.getID().equals(f2.getID())) // if they are the same feature, move onto the next one
291:                                {
292:                                    if (g1.crosses(g2) != expected) {
293:                                        //results.error( f1, f1.getDefaultGeometry().getGeometryType()+" "+getGeomTypeRefA()+"("+f1.getID()+")"+" crossed "+getGeomTypeRefA()+"("+f2.getID()+"), Result was not "+expected );
294:                                        results.error(f1, getGeomTypeRefA()
295:                                                + "(" + f1.getID() + ")"
296:                                                + " crossed "
297:                                                + getGeomTypeRefA() + "("
298:                                                + f2.getID() + ")");
299:                                        System.out.println(f1
300:                                                .getDefaultGeometry()
301:                                                .getGeometryType()
302:                                                + " "
303:                                                + getGeomTypeRefA()
304:                                                + "("
305:                                                + f1.getID()
306:                                                + ")"
307:                                                + " crossed "
308:                                                + getGeomTypeRefA()
309:                                                + "("
310:                                                + f2.getID()
311:                                                + "), Result was not "
312:                                                + expected);
313:                                        success = false;
314:                                    }
315:                                }
316:                            }
317:                        }
318:                        usedIDs.add(f1.getID());
319:                    }
320:                } finally {
321:                    fr1.close();
322:                    if (fr2 != null)
323:                        fr2.close();
324:                }
325:
326:                return success;
327:            }
328:
329:            private Filter filterBBox(Envelope bBox, FeatureType ft)
330:                    throws FactoryConfigurationError, IllegalFilterException {
331:                FilterFactory ff = FilterFactoryFinder.createFilterFactory();
332:                BBoxExpression bboxExpr = ff.createBBoxExpression(bBox);
333:                AttributeExpression geomExpr = ff.createAttributeExpression(ft,
334:                        ft.getDefaultGeometry().getName());
335:                GeometryFilter containsFilter = ff
336:                        .createGeometryFilter(Filter.GEOMETRY_DISJOINT);
337:                containsFilter.addLeftGeometry(bboxExpr);
338:                containsFilter.addRightGeometry(geomExpr);
339:
340:                //		GeometryFilter overlapsFilter = ff.createGeometryFilter(Filter.GEOMETRY_OVERLAPS);
341:                //		overlapsFilter.addLeftGeometry(bboxExpr);
342:                //		overlapsFilter.addRightGeometry(geomExpr);
343:                //		Filter filter = containsFilter.or(overlapsFilter);
344:                Filter filter = containsFilter.and(containsFilter);
345:                return filter;
346:            }
347:        }
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