root / branches / v2_0_0_prep / libraries / libFMap_mapcontext / src / org / gvsig / fmap / mapcontext / layers / vectorial / CrossesGeometryEvaluator.java @ 38557
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package org.gvsig.fmap.mapcontext.layers.vectorial; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import org.gvsig.fmap.dal.exception.DataEvaluatorRuntimeException; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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import org.gvsig.fmap.dal.feature.FeatureType; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.operation.GeometryOperationException; |
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import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException; |
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import org.gvsig.fmap.geom.operation.relationship.Crosses; |
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import org.gvsig.fmap.geom.operation.relationship.DefaultRelationshipGeometryOperationContext; |
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import org.gvsig.fmap.geom.operation.towkt.ToWKT; |
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import org.gvsig.tools.evaluator.AbstractEvaluator; |
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import org.gvsig.tools.evaluator.EvaluatorData; |
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import org.gvsig.tools.evaluator.EvaluatorException; |
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/**
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*
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* @author Vicente Caballero Navarro
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*
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*/
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public class CrossesGeometryEvaluator extends AbstractEvaluator { |
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private String geomName; |
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private Geometry geometry;
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private Geometry geometryTrans;
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private String srs; |
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private boolean isDefault; |
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private String geometryWKT; |
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public CrossesGeometryEvaluator(Geometry geometry,
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IProjection projection, FeatureType featureType, |
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String geomName) {
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FeatureAttributeDescriptor fad = (FeatureAttributeDescriptor) featureType |
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.get(geomName); |
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this.isDefault = featureType.getDefaultGeometryAttributeName().equals(
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geomName); |
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this.geometry = geometry;
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this.geometryTrans = geometry.cloneGeometry();
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this.srs = projection.getAbrev();
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ICoordTrans ct = projection.getCT(fad.getSRS()); |
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if (ct != null) { |
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geometryTrans.reProject(ct); |
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} |
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this.geomName = geomName;
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this.getFieldsInfo().addMatchFieldValue(geomName, geometryTrans);
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} |
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public Object evaluate(EvaluatorData data) throws EvaluatorException { |
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try {
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DefaultRelationshipGeometryOperationContext context; |
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if (isDefault) {
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Feature feature = (Feature) data.getContextValue("feature");
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context =new DefaultRelationshipGeometryOperationContext(feature
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.getDefaultGeometry()); |
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} else {
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Geometry geom = (Geometry) data.getDataValue(geomName); |
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context = new DefaultRelationshipGeometryOperationContext(geom);
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} |
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return geometryTrans.invokeOperation(Crosses.CODE, context);
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} catch (Exception e) { |
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throw new EvaluatorException(e); |
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} |
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} |
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public String getName() { |
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return "crosses with geometry"; |
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} |
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public String getSQL() { |
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if (geometryWKT == null) { |
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try {
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geometryWKT = (String) geometry.invokeOperation(ToWKT.CODE,
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null);
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} catch (GeometryOperationNotSupportedException e) {
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throw new DataEvaluatorRuntimeException(e); |
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} catch (GeometryOperationException e) {
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throw new DataEvaluatorRuntimeException(e); |
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} |
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} |
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return " crosses(GeomFromText('" + geometryWKT + "', " + "'" |
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+ srs + "'" + "), " + geomName + ") "; |
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} |
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} |