/*
* This software is subject to the terms of the Eclipse Public License v1.0
* Agreement, available at the following URL:
* http://www.eclipse.org/legal/epl-v10.html.
* You must accept the terms of that agreement to use this software.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package mondrian.udf;
import mondrian.olap.Evaluator;
import mondrian.olap.Syntax;
import mondrian.olap.type.NumericType;
import mondrian.olap.type.Type;
import mondrian.spi.UserDefinedFunction;
/**
* VB function <code>Val</code>
*
* @author Gang Chen
*/
public class ValUdf implements UserDefinedFunction {
public Object execute(Evaluator evaluator, Argument[] arguments) {
Object arg = arguments[0].evaluateScalar(evaluator);
if (arg instanceof Number) {
return new Double(((Number) arg).doubleValue());
} else {
return new Double(0.0);
}
}
public String getDescription() {
return "VB function Val";
}
public String getName() {
return "Val";
}
public Type[] getParameterTypes() {
return new Type[] { new NumericType() };
}
public String[] getReservedWords() {
return null;
}
public Type getReturnType(Type[] parameterTypes) {
return new NumericType();
}
public Syntax getSyntax() {
return Syntax.Function;
}
}
// End ValUdf.java