01: package org.geotools.filter.function;
02:
03: /*
04: * GeoTools - OpenSource mapping toolkit
05: * http://geotools.org
06: * (C) 2005-2006, GeoTools Project Managment Committee (PMC)
07: *
08: * This library is free software; you can redistribute it and/or
09: * modify it under the terms of the GNU Lesser General Public
10: * License as published by the Free Software Foundation;
11: * version 2.1 of the License.
12: *
13: * This library is distributed in the hope that it will be useful,
14: * but WITHOUT ANY WARRANTY; without even the implied warranty of
15: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16: * Lesser General Public License for more details.
17: */
18:
19: //this code is autogenerated - you shouldnt be modifying it!
20: import org.geotools.filter.FunctionExpression;
21: import org.geotools.filter.FunctionExpressionImpl;
22:
23: import com.vividsolutions.jts.geom.Geometry;
24:
25: public class FilterFunction_centroid extends FunctionExpressionImpl
26: implements FunctionExpression {
27:
28: public FilterFunction_centroid() {
29: super ("centroid");
30: }
31:
32: public int getArgCount() {
33: return 1;
34: }
35:
36: public Object evaluate(Object feature) {
37: Geometry arg0;
38:
39: try { // attempt to get value and perform conversion
40: arg0 = (Geometry) getExpression(0).evaluate(feature);
41: } catch (Exception e) // probably a type error
42: {
43: throw new IllegalArgumentException(
44: "Filter Function problem for function centroid argument #0 - expected type Geometry");
45: }
46:
47: return (StaticGeometry.centroid(arg0));
48: }
49: }
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