001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017 018package org.apache.commons.jxpath.ri.compiler; 019 020import org.apache.commons.jxpath.ri.EvalContext; 021import org.apache.commons.jxpath.ri.InfoSetUtil; 022 023/** 024 * Implementation of {@link Expression} for the operation "div". 025 */ 026public class CoreOperationDivide extends CoreOperation { 027 028 /** 029 * Constructs a new CoreOperationDivide. 030 * 031 * @param arg1 dividend 032 * @param arg2 divisor 033 */ 034 public CoreOperationDivide(final Expression arg1, final Expression arg2) { 035 super(new Expression[] { arg1, arg2 }); 036 } 037 038 @Override 039 public Object computeValue(final EvalContext context) { 040 final double l = InfoSetUtil.doubleValue(args[0].computeValue(context)); 041 final double r = InfoSetUtil.doubleValue(args[1].computeValue(context)); 042 return Double.valueOf(l / r); 043 } 044 045 @Override 046 protected int getPrecedence() { 047 return MULTIPLY_PRECEDENCE; 048 } 049 050 @Override 051 public String getSymbol() { 052 return "div"; 053 } 054 055 @Override 056 protected boolean isSymmetric() { 057 return false; 058 } 059}