svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.compat.cdc / org.gvsig.fmap.dal / org.gvsig.fmap.dal.impl / src / main / java / org / gvsig / expressionevaluator / impl / function / dataaccess / GeometryFunction.java @ 44925
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/**
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* gvSIG. Desktop Geographic Information System.
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*
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* Copyright (C) 2007-2020 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.expressionevaluator.impl.function.dataaccess; |
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import org.apache.commons.lang3.Range; |
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import org.gvsig.expressionevaluator.Interpreter; |
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import org.gvsig.expressionevaluator.impl.DALFunctions; |
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import static org.gvsig.fmap.dal.DataManager.FUNCTION_GEOMETRY; |
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import org.gvsig.fmap.dal.feature.Feature; |
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import org.gvsig.fmap.geom.Geometry; |
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/**
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*
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* @author jjdelcerro
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*/
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public class GeometryFunction extends AbstractFeatureFunction { |
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public GeometryFunction() {
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super(
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DALFunctions.GROUP_DATA_ACCESS, |
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FUNCTION_GEOMETRY, |
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Range.is(0),
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"Returns the value of the field that stores the default geometry " +
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"of the current row or feature.\n" +
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"Return null if used outer a table filter.",
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FUNCTION_GEOMETRY + "()",
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null,
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"Geometry",
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false
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); |
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} |
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@Override
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public boolean allowConstantFolding() { |
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return false; |
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} |
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@Override
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public Object call(Interpreter interpreter, Object[] args) throws Exception { |
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Feature feature = this.current_row(interpreter);
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if( feature == null ) { |
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return null; |
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} |
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Geometry geom = feature.getDefaultGeometry(); |
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return geom;
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} |
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} |