/* * reserved comment block * DO NOT REMOVE OR ALTER! */ /* * Copyright 1999-2004 The Apache Software Foundation. * * Licensed 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. */ /* * $Id: Equals.java,v 1.2.4.1 2005/09/14 21:31:44 jeffsuttor Exp $ */ package com.sun.org.apache.xpath.internal.operations; import com.sun.org.apache.xpath.internal.XPathContext; import com.sun.org.apache.xpath.internal.objects.XBoolean; import com.sun.org.apache.xpath.internal.objects.XObject; /** * The '=' operation expression executer. */ public class Equals extends Operation { static final long serialVersionUID = -2658315633903426134L; /** * Apply the operation to two operands, and return the result. * * * @param left non-null reference to the evaluated left operand. * @param right non-null reference to the evaluated right operand. * * @return non-null reference to the XObject that represents the result of the operation. * * @throws javax.xml.transform.TransformerException */ public XObject operate(XObject left, XObject right) throws javax.xml.transform.TransformerException { return left.equals(right) ? XBoolean.S_TRUE : XBoolean.S_FALSE; } /** * Execute a binary operation by calling execute on each of the operands, * and then calling the operate method on the derived class. * * * @param xctxt The runtime execution context. * * @return The XObject result of the operation. * * @throws javax.xml.transform.TransformerException */ public boolean bool(XPathContext xctxt) throws javax.xml.transform.TransformerException { XObject left = m_left.execute(xctxt, true); XObject right = m_right.execute(xctxt, true); boolean result = left.equals(right) ? true : false; left.detach(); right.detach(); return result; } }