svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.geometry / org.gvsig.expressionevaluator.geometry.lib / org.gvsig.expressionevaluator.geometry.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / function / spatial / STPerimeterFunction.java @ 44644
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1 | 43512 | jjdelcerro | package org.gvsig.expressionevaluator.impl.function.spatial; |
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2 | |||
3 | import org.apache.commons.lang3.Range; |
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4 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Interpreter; |
5 | 44644 | jjdelcerro | import org.gvsig.expressionevaluator.spi.AbstractGeometryFunction; |
6 | 43996 | jjdelcerro | import org.gvsig.fmap.geom.Geometry; |
7 | 43512 | jjdelcerro | |
8 | 44644 | jjdelcerro | public class STPerimeterFunction extends AbstractGeometryFunction { |
9 | 43512 | jjdelcerro | |
10 | 43996 | jjdelcerro | public STPerimeterFunction() {
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11 | super("OGC", "ST_Perimeter", Range.is(1)); |
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12 | 43512 | jjdelcerro | } |
13 | |||
14 | @Override
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15 | 44009 | jjdelcerro | public boolean allowConstantFolding() { |
16 | return true; |
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17 | } |
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18 | |||
19 | @Override
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20 | 43521 | jjdelcerro | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
21 | 43996 | jjdelcerro | Geometry geom = getGeom(args, 0);
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22 | double r = geom.perimeter();
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23 | 43512 | jjdelcerro | return r;
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24 | } |
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25 | |||
26 | } |