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 @ 41348
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1 | 40559 | jjdelcerro | /**
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2 | * gvSIG. Desktop Geographic Information System.
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3 | *
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4 | * Copyright (C) 2007-2013 gvSIG Association.
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5 | *
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6 | * This program is free software; you can redistribute it and/or
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7 | * modify it under the terms of the GNU General Public License
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8 | * as published by the Free Software Foundation; either version 3
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9 | * of the License, or (at your option) any later version.
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10 | *
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11 | * This program is distributed in the hope that it will be useful,
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12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | * GNU General Public License for more details.
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15 | *
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16 | * You should have received a copy of the GNU General Public License
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17 | * along with this program; if not, write to the Free Software
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18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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19 | * MA 02110-1301, USA.
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20 | *
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21 | * For any additional information, do not hesitate to contact us
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22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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23 | */
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24 | 40435 | jjdelcerro | package org.gvsig.fmap.mapcontext.layers.vectorial; |
25 | |||
26 | import org.cresques.cts.ICoordTrans; |
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27 | import org.cresques.cts.IProjection; |
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28 | import org.gvsig.fmap.dal.exception.DataEvaluatorRuntimeException; |
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29 | import org.gvsig.fmap.dal.feature.Feature; |
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30 | import org.gvsig.fmap.dal.feature.FeatureAttributeDescriptor; |
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31 | import org.gvsig.fmap.dal.feature.FeatureType; |
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32 | import org.gvsig.fmap.geom.Geometry; |
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33 | import org.gvsig.fmap.geom.operation.GeometryOperationException; |
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34 | import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException; |
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35 | import org.gvsig.tools.evaluator.AbstractEvaluator; |
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36 | import org.gvsig.tools.evaluator.EvaluatorData; |
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37 | import org.gvsig.tools.evaluator.EvaluatorException; |
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38 | /**
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39 | *
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40 | * @author Vicente Caballero Navarro
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41 | *
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42 | */
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43 | public class CrossesGeometryEvaluator extends AbstractEvaluator { |
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44 | |||
45 | private String geomName; |
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46 | private Geometry geometry;
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47 | private Geometry geometryTrans;
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48 | private String srs; |
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49 | private boolean isDefault; |
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50 | private String geometryWKT; |
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51 | |||
52 | public CrossesGeometryEvaluator(Geometry geometry,
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53 | IProjection projection, FeatureType featureType, |
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54 | String geomName) {
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55 | FeatureAttributeDescriptor fad = (FeatureAttributeDescriptor) featureType |
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56 | .get(geomName); |
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57 | this.isDefault = featureType.getDefaultGeometryAttributeName().equals(
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58 | geomName); |
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59 | this.geometry = geometry;
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60 | this.geometryTrans = geometry.cloneGeometry();
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61 | this.srs = projection.getAbrev();
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62 | |||
63 | ICoordTrans ct = null;
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64 | IProjection fad_proj = fad.getSRS(); |
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65 | |||
66 | if (fad_proj != null && !fad_proj.equals(projection)) { |
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67 | ct = projection.getCT(fad_proj); |
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68 | } |
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69 | |||
70 | if (ct != null) { |
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71 | geometryTrans.reProject(ct); |
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72 | } |
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73 | this.geomName = geomName;
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74 | |||
75 | this.getFieldsInfo().addMatchFieldValue(geomName, geometryTrans);
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76 | |||
77 | } |
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78 | |||
79 | public Object evaluate(EvaluatorData data) throws EvaluatorException { |
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80 | |||
81 | try {
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82 | Geometry geom = null;
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83 | if (isDefault) {
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84 | Feature feature = (Feature) data.getContextValue("feature");
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85 | geom = feature.getDefaultGeometry(); |
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86 | } else {
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87 | geom = (Geometry) data.getDataValue(geomName); |
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88 | } |
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89 | 41348 | jjdelcerro | if ( geom == null ) { |
90 | return Boolean.FALSE; |
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91 | } |
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92 | 40435 | jjdelcerro | return new Boolean(geometryTrans.crosses(geom)); |
93 | |||
94 | } catch (Exception e) { |
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95 | throw new EvaluatorException(e); |
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96 | } |
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97 | } |
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98 | |||
99 | public String getName() { |
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100 | return "crosses with geometry"; |
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101 | } |
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102 | |||
103 | public String getSQL() { |
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104 | if (geometryWKT == null) { |
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105 | try {
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106 | geometryWKT = geometry.convertToWKT(); |
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107 | } catch (GeometryOperationNotSupportedException e) {
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108 | throw new DataEvaluatorRuntimeException(e); |
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109 | } catch (GeometryOperationException e) {
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110 | throw new DataEvaluatorRuntimeException(e); |
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111 | } |
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112 | } |
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113 | |||
114 | return " ST_crosses(ST_GeomFromText('" + geometryWKT + "', " + "'" |
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115 | + srs + "'" + "), " + geomName + ") "; |
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116 | } |
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117 | |||
118 | } |