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 / STNumGeometriesFunction.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 | 43518 | jjdelcerro | import org.gvsig.fmap.geom.Geometry; |
| 7 | import org.gvsig.fmap.geom.aggregate.Aggregate; |
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| 8 | 43512 | jjdelcerro | |
| 9 | 44644 | jjdelcerro | public class STNumGeometriesFunction extends AbstractGeometryFunction { |
| 10 | 43512 | jjdelcerro | |
| 11 | 43518 | jjdelcerro | public STNumGeometriesFunction() {
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| 12 | super("OGC", "ST_NumGeometries", Range.is(1)); |
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| 13 | 43512 | jjdelcerro | } |
| 14 | |||
| 15 | @Override
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| 16 | 44009 | jjdelcerro | public boolean allowConstantFolding() { |
| 17 | return true; |
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| 18 | } |
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| 19 | |||
| 20 | @Override
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| 21 | 43521 | jjdelcerro | public Object call(Interpreter interpreter, Object[] args) throws Exception { |
| 22 | 43518 | jjdelcerro | Geometry geom = getGeom(args, 0);
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| 23 | if( geom instanceof Aggregate ) { |
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| 24 | int r = ((Aggregate) geom).getPrimitivesNumber();
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| 25 | return r;
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| 26 | } |
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| 27 | return null; |
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| 28 | 43512 | jjdelcerro | } |
| 29 | |||
| 30 | } |