svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.mapcontext / org.gvsig.fmap.mapcontext.api / src / main / java / org / gvsig / fmap / mapcontext / layers / vectorial / CrossesGeometryEvaluator.java @ 42809
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2013 gvSIG Association.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 3
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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* For any additional information, do not hesitate to contact us
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* at info AT gvsig.com, or visit our website www.gvsig.com.
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*/
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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.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 = null;
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IProjection fad_proj = fad.getSRS(); |
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if (fad_proj != null && !fad_proj.equals(projection)) { |
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ct = projection.getCT(fad_proj); |
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} |
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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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Geometry geom = null;
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if (isDefault) {
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Feature feature = (Feature) data.getContextValue("feature");
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geom = feature.getDefaultGeometry(); |
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} else {
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geom = (Geometry) data.getDataValue(geomName); |
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} |
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if ( geom == null ) { |
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return Boolean.FALSE; |
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} |
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return new Boolean(geometryTrans.crosses(geom)); |
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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 = geometry.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 " ST_crosses(ST_GeomFromText('" + geometryWKT + "', " + "'" |
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+ srs + "'" + "), " + geomName + ") "; |
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} |
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} |