1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one 3 * or more contributor license agreements. See the NOTICE file 4 * distributed with this work for additional information 5 * regarding copyright ownership. The ASF licenses this file 6 * to you under the Apache License, Version 2.0 (the "License"); 7 * you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at 9 * 10 * http://www.apache.org/licenses/LICENSE-2.0 11 * 12 * Unless required by applicable law or agreed to in writing, software 13 * distributed under the License is distributed on an "AS IS" BASIS, 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 15 * See the License for the specific language governing permissions and 16 * limitations under the License. 17 */ 18 /* 19 * $Id: Mult.java 468655 2006-10-28 07:12:06Z minchau $ 20 */ 21 package org.apache.xpath.operations; 22 23 import org.apache.xpath.XPathContext; 24 import org.apache.xpath.objects.XNumber; 25 import org.apache.xpath.objects.XObject; 26 27 /** 28 * The '*' operation expression executer. 29 */ 30 public class Mult extends Operation 31 { 32 static final long serialVersionUID = -4956770147013414675L; 33 34 /** 35 * Apply the operation to two operands, and return the result. 36 * 37 * 38 * @param left non-null reference to the evaluated left operand. 39 * @param right non-null reference to the evaluated right operand. 40 * 41 * @return non-null reference to the XObject that represents the result of the operation. 42 * 43 * @throws javax.xml.transform.TransformerException 44 */ operate(XObject left, XObject right)45 public XObject operate(XObject left, XObject right) 46 throws javax.xml.transform.TransformerException 47 { 48 return new XNumber(left.num() * right.num()); 49 } 50 51 /** 52 * Evaluate this operation directly to a double. 53 * 54 * @param xctxt The runtime execution context. 55 * 56 * @return The result of the operation as a double. 57 * 58 * @throws javax.xml.transform.TransformerException 59 */ num(XPathContext xctxt)60 public double num(XPathContext xctxt) 61 throws javax.xml.transform.TransformerException 62 { 63 return (m_left.num(xctxt) * m_right.num(xctxt)); 64 } 65 66 } 67