svn-gvsig-desktop / tags / v2_0_0_Build_2060 / libraries / libFMap_mapcontext / src / org / gvsig / fmap / mapcontext / layers / vectorial / CrossesGeometryEvaluator.java @ 39366
History | View | Annotate | Download (3.07 KB)
| 1 |
package org.gvsig.fmap.mapcontext.layers.vectorial; |
|---|---|
| 2 |
|
| 3 |
import org.cresques.cts.ICoordTrans; |
| 4 |
import org.cresques.cts.IProjection; |
| 5 |
import org.gvsig.fmap.dal.exception.DataEvaluatorRuntimeException; |
| 6 |
import org.gvsig.fmap.dal.feature.Feature; |
| 7 |
import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
| 8 |
import org.gvsig.fmap.dal.feature.FeatureType; |
| 9 |
import org.gvsig.fmap.geom.Geometry; |
| 10 |
import org.gvsig.fmap.geom.operation.GeometryOperationException; |
| 11 |
import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException; |
| 12 |
import org.gvsig.fmap.geom.operation.relationship.Crosses; |
| 13 |
import org.gvsig.fmap.geom.operation.relationship.DefaultRelationshipGeometryOperationContext; |
| 14 |
import org.gvsig.fmap.geom.operation.towkt.ToWKT; |
| 15 |
import org.gvsig.tools.evaluator.AbstractEvaluator; |
| 16 |
import org.gvsig.tools.evaluator.EvaluatorData; |
| 17 |
import org.gvsig.tools.evaluator.EvaluatorException; |
| 18 |
/**
|
| 19 |
*
|
| 20 |
* @author Vicente Caballero Navarro
|
| 21 |
*
|
| 22 |
*/
|
| 23 |
public class CrossesGeometryEvaluator extends AbstractEvaluator { |
| 24 |
|
| 25 |
private String geomName; |
| 26 |
private Geometry geometry;
|
| 27 |
private Geometry geometryTrans;
|
| 28 |
private String srs; |
| 29 |
private boolean isDefault; |
| 30 |
private String geometryWKT; |
| 31 |
|
| 32 |
public CrossesGeometryEvaluator(Geometry geometry,
|
| 33 |
IProjection projection, FeatureType featureType, |
| 34 |
String geomName) {
|
| 35 |
FeatureAttributeDescriptor fad = (FeatureAttributeDescriptor) featureType |
| 36 |
.get(geomName); |
| 37 |
this.isDefault = featureType.getDefaultGeometryAttributeName().equals(
|
| 38 |
geomName); |
| 39 |
this.geometry = geometry;
|
| 40 |
this.geometryTrans = geometry.cloneGeometry();
|
| 41 |
this.srs = projection.getAbrev();
|
| 42 |
|
| 43 |
ICoordTrans ct = null;
|
| 44 |
IProjection fad_proj = fad.getSRS(); |
| 45 |
|
| 46 |
if (fad_proj != null && !fad_proj.equals(projection)) { |
| 47 |
ct = projection.getCT(fad_proj); |
| 48 |
} |
| 49 |
|
| 50 |
if (ct != null) { |
| 51 |
geometryTrans.reProject(ct); |
| 52 |
} |
| 53 |
this.geomName = geomName;
|
| 54 |
|
| 55 |
this.getFieldsInfo().addMatchFieldValue(geomName, geometryTrans);
|
| 56 |
|
| 57 |
} |
| 58 |
|
| 59 |
public Object evaluate(EvaluatorData data) throws EvaluatorException { |
| 60 |
try {
|
| 61 |
DefaultRelationshipGeometryOperationContext context; |
| 62 |
if (isDefault) {
|
| 63 |
Feature feature = (Feature) data.getContextValue("feature");
|
| 64 |
context =new DefaultRelationshipGeometryOperationContext(feature
|
| 65 |
.getDefaultGeometry()); |
| 66 |
|
| 67 |
} else {
|
| 68 |
Geometry geom = (Geometry) data.getDataValue(geomName); |
| 69 |
|
| 70 |
context = new DefaultRelationshipGeometryOperationContext(geom);
|
| 71 |
} |
| 72 |
return geometryTrans.invokeOperation(Crosses.CODE, context);
|
| 73 |
|
| 74 |
} catch (Exception e) { |
| 75 |
throw new EvaluatorException(e); |
| 76 |
} |
| 77 |
} |
| 78 |
|
| 79 |
public String getName() { |
| 80 |
return "crosses with geometry"; |
| 81 |
} |
| 82 |
|
| 83 |
public String getSQL() { |
| 84 |
if (geometryWKT == null) { |
| 85 |
try {
|
| 86 |
geometryWKT = (String) geometry.invokeOperation(ToWKT.CODE,
|
| 87 |
null);
|
| 88 |
} catch (GeometryOperationNotSupportedException e) {
|
| 89 |
throw new DataEvaluatorRuntimeException(e); |
| 90 |
} catch (GeometryOperationException e) {
|
| 91 |
throw new DataEvaluatorRuntimeException(e); |
| 92 |
} |
| 93 |
} |
| 94 |
|
| 95 |
return " crosses(GeomFromText('" + geometryWKT + "', " + "'" |
| 96 |
+ srs + "'" + "), " + geomName + ") "; |
| 97 |
} |
| 98 |
|
| 99 |
} |