root / branches / v2_0_0_prep / libraries / libFMap_mapcontext / src / org / gvsig / fmap / mapcontext / layers / vectorial / IntersectsEnvelopeEvaluator.java @ 38100
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package org.gvsig.fmap.mapcontext.layers.vectorial; |
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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.primitive.Envelope; |
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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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public class IntersectsEnvelopeEvaluator extends AbstractEvaluator { |
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private Envelope envelope;
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private String geomName; |
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private String envelopeWKT = null; |
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private Envelope envelopeTrans;
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private boolean isDefault; |
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private String srs; |
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public IntersectsEnvelopeEvaluator(Envelope envelope,
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IProjection envelopeProjection, 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.envelope = envelope;
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// this.srs = envelopeProjection.getAbrev();
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// this.projection=CRSFactory.getCRS(fad.getSRS());
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// this.envelopeProjection=envelopeProjection;
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// ICoordTrans ct = null;
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// if (!this.srs.equals(fad.getSRS())) { // FIXME comparaci?n
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// ct = envelopeProjection.getCT(fad.getSRS());
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// }
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// if (ct != null) {
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// this.envelopeTrans = envelope.convert(ct);
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// } else {
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this.envelopeTrans = envelope;
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// }
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this.geomName = geomName;
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this.srs = envelopeProjection.getAbrev();
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this.getFieldsInfo().addMatchFieldValue(geomName, envelopeTrans);
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} |
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public Object evaluate(EvaluatorData data) throws EvaluatorException { |
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Envelope featureEnvelope; |
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if (isDefault) {
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featureEnvelope = ((Feature) data.getContextValue("feature"))
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.getDefaultEnvelope(); |
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} else {
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featureEnvelope = ((Geometry) data.getDataValue(geomName)).getEnvelope(); |
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} |
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return new Boolean(envelopeTrans.intersects(featureEnvelope)); |
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} |
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public String getName() { |
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return "intersets in envelope"; |
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} |
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public String getSQL() { |
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if (envelopeWKT == null) { |
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try {
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envelopeWKT = (String) envelope.getGeometry().convertToWKT();
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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 " intersects(GeomFromText('" + envelopeWKT + "', '" + srs |
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+ "'), envelope(" + geomName + ")) "; |
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} |
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} |