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 / STUnionFunction.java @ 44644
History | View | Annotate | Download (690 Bytes)
1 |
package org.gvsig.expressionevaluator.impl.function.spatial; |
---|---|
2 |
|
3 |
import org.apache.commons.lang3.Range; |
4 |
import org.gvsig.expressionevaluator.Interpreter; |
5 |
import org.gvsig.expressionevaluator.spi.AbstractGeometryFunction; |
6 |
import org.gvsig.fmap.geom.Geometry; |
7 |
|
8 |
public class STUnionFunction extends AbstractGeometryFunction { |
9 |
|
10 |
public STUnionFunction() {
|
11 |
super("OGC", "ST_Union", Range.is(2)); |
12 |
} |
13 |
|
14 |
@Override
|
15 |
public boolean allowConstantFolding() { |
16 |
return true; |
17 |
} |
18 |
|
19 |
@Override
|
20 |
public Object call(Interpreter interpreter, Object[] args) throws Exception { |
21 |
Geometry r = getGeom(args, 0).union(getGeom(args, 1)); |
22 |
return r;
|
23 |
} |
24 |
|
25 |
} |