/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.jxpath.ri.compiler;
import org.apache.commons.jxpath.ri.EvalContext;
import org.apache.commons.jxpath.ri.InfoSetUtil;
/**
* Implementation of {@link Expression} for the operation "*".
*
* @author Dmitri Plotnikov
* @version $Revision: 652845 $ $Date: 2008-05-02 12:46:46 -0500 (Fri, 02 May 2008) $
*/
public class CoreOperationMultiply extends CoreOperation {
/**
* Create a new CoreOperationMultiply.
* @param arg1 factor 1
* @param arg2 factor 2
*/
public CoreOperationMultiply(Expression arg1, Expression arg2) {
super(new Expression[] { arg1, arg2 });
}
public Object computeValue(EvalContext context) {
double l = InfoSetUtil.doubleValue(args[0].computeValue(context));
double r = InfoSetUtil.doubleValue(args[1].computeValue(context));
return new Double(l * r);
}
protected int getPrecedence() {
return MULTIPLY_PRECEDENCE;
}
protected boolean isSymmetric() {
return true;
}
public String getSymbol() {
return "*";
}
}