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 / IntersectsEnvelopeEvaluator.java @ 44644
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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 | 43020 | jjdelcerro | * This program is free software; you can redistribute it and/or modify it under
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7 | * the terms of the GNU General Public License as published by the Free Software
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8 | * Foundation; either version 3 of the License, or (at your option) any later
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9 | * version.
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10 | 40559 | jjdelcerro | *
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11 | 43020 | jjdelcerro | * This program is distributed in the hope that it will be useful, but WITHOUT
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12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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13 | * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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14 | * details.
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15 | 40559 | jjdelcerro | *
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16 | 43020 | jjdelcerro | * You should have received a copy of the GNU General Public License along with
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17 | * this program; if not, write to the Free Software Foundation, Inc., 51
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18 | * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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19 | 40559 | jjdelcerro | *
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20 | 43020 | jjdelcerro | * For any additional information, do not hesitate to contact us at info AT
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21 | * gvsig.com, or visit our website www.gvsig.com.
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22 | 40559 | jjdelcerro | */
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23 | 40435 | jjdelcerro | package org.gvsig.fmap.mapcontext.layers.vectorial; |
24 | |||
25 | import org.cresques.cts.IProjection; |
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26 | 44043 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionBuilder; |
27 | 44644 | jjdelcerro | import org.gvsig.expressionevaluator.GeometryExpressionBuilder; |
28 | 42464 | fdiaz | |
29 | 40435 | jjdelcerro | import org.gvsig.fmap.dal.feature.Feature; |
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.primitive.Envelope; |
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34 | import org.gvsig.tools.evaluator.AbstractEvaluator; |
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35 | import org.gvsig.tools.evaluator.EvaluatorData; |
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36 | import org.gvsig.tools.evaluator.EvaluatorException; |
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37 | |||
38 | public class IntersectsEnvelopeEvaluator extends AbstractEvaluator { |
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39 | |||
40 | 43040 | jjdelcerro | private final Envelope envelope; |
41 | private final String geomName; |
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42 | private final boolean isDefault; |
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43 | private final String defaultGeometryAttributeName; |
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44 | private final IProjection projection; |
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45 | 44644 | jjdelcerro | private final GeometryExpressionBuilder builder; |
46 | 43739 | jjdelcerro | FeatureAttributeDescriptor fad; |
47 | 44043 | jjdelcerro | |
48 | 43040 | jjdelcerro | IntersectsEnvelopeEvaluator( |
49 | Envelope envelope, |
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50 | IProjection envelopeProjection, |
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51 | FeatureType featureType, |
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52 | 43020 | jjdelcerro | String geomName,
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53 | 44644 | jjdelcerro | GeometryExpressionBuilder builder |
54 | 43040 | jjdelcerro | ) { |
55 | 43739 | jjdelcerro | fad = (FeatureAttributeDescriptor) featureType.get(geomName); |
56 | 43020 | jjdelcerro | defaultGeometryAttributeName = featureType.getDefaultGeometryAttributeName(); |
57 | this.isDefault = defaultGeometryAttributeName.equals(geomName);
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58 | this.envelope = envelope;
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59 | 43040 | jjdelcerro | this.projection = envelopeProjection;
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60 | this.builder = builder;
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61 | 43020 | jjdelcerro | this.geomName = geomName;
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62 | this.getFieldsInfo().addMatchFieldValue(geomName, envelope);
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63 | } |
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64 | 40435 | jjdelcerro | |
65 | 43020 | jjdelcerro | @Override
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66 | 42464 | fdiaz | public Object evaluate(EvaluatorData data) throws EvaluatorException { |
67 | Envelope featureEnvelope; |
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68 | 43020 | jjdelcerro | Geometry geom ; |
69 | 42464 | fdiaz | if (isDefault) {
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70 | geom = (Geometry) data.getDataValue(defaultGeometryAttributeName); |
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71 | featureEnvelope = ((Feature) data.getContextValue("feature")).getDefaultEnvelope();
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72 | } else {
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73 | geom = (Geometry) data.getDataValue(geomName); |
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74 | if (geom == null) { |
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75 | 43040 | jjdelcerro | return false; |
76 | 42464 | fdiaz | } |
77 | featureEnvelope = geom.getEnvelope(); |
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78 | } |
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79 | 43020 | jjdelcerro | if (envelope.intersects(featureEnvelope)) {
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80 | return envelope.intersects(geom);
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81 | 42464 | fdiaz | } |
82 | 43040 | jjdelcerro | return false; |
83 | 42464 | fdiaz | } |
84 | 40435 | jjdelcerro | |
85 | 43020 | jjdelcerro | @Override
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86 | public String getName() { |
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87 | return "intersects envelope"; |
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88 | } |
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89 | 40435 | jjdelcerro | |
90 | 43020 | jjdelcerro | @Override
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91 | public String getSQL() { |
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92 | 44361 | jjdelcerro | ExpressionBuilder.Variable column = builder.column(fad.getName()); |
93 | 44369 | jjdelcerro | IProjection theProjection = this.projection;
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94 | if( this.fad.getSRS()==null ) { |
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95 | theProjection = null;
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96 | } |
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97 | 43040 | jjdelcerro | return builder.set(
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98 | 44361 | jjdelcerro | builder.and( |
99 | builder.not_is_null(column) , |
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100 | builder.ST_Intersects( |
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101 | 44369 | jjdelcerro | column, |
102 | builder.geometry(envelope.getGeometry(), theProjection) |
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103 | 44361 | jjdelcerro | ) |
104 | 43040 | jjdelcerro | ) |
105 | ).toString(); |
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106 | 43020 | jjdelcerro | } |
107 | 40435 | jjdelcerro | } |