package org.geotools.filter.function.math;
/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2005-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
//this code is autogenerated - you shouldnt be modifying it!
import static org.geotools.filter.capability.FunctionNameImpl.parameter;
import static org.geotools.filter.capability.FunctionNameImpl.parameter;
import org.geotools.filter.FunctionExpressionImpl;
import org.geotools.filter.capability.FunctionNameImpl;
import org.opengis.filter.capability.FunctionName;
public class FilterFunction_atan extends FunctionExpressionImpl {
//public static FunctionName NAME = new FunctionNameImpl("atan","value");
public static FunctionName NAME = new FunctionNameImpl("atan",
parameter("arc tan", Double.class),
parameter("value",Double.class));
public FilterFunction_atan() {
super("atan");
functionName = NAME;
}
public int getArgCount() {
return 1;
}
public Object evaluate(Object feature) {
double arg0;
try { // attempt to get value and perform conversion
arg0 = getExpression(0).evaluate(feature,Double.class).doubleValue();
} catch (Exception e) {
// probably a type error
throw new IllegalArgumentException(
"Filter Function problem for function atan argument #0 - expected type double");
}
return new Double(Math.atan(arg0));
}
}