View Javadoc
1 /*** 2 * Redistribution and use of this software and associated documentation 3 * ("Software"), with or without modification, are permitted provided 4 * that the following conditions are met: 5 * 6 * 1. Redistributions of source code must retain copyright 7 * statements and notices. Redistributions must also contain a 8 * copy of this document. 9 * 10 * 2. Redistributions in binary form must reproduce the 11 * above copyright notice, this list of conditions and the 12 * following disclaimer in the documentation and/or other 13 * materials provided with the distribution. 14 * 15 * 3. The name "Exolab" must not be used to endorse or promote 16 * products derived from this Software without prior written 17 * permission of Exoffice Technologies. For written permission, 18 * please contact info@exolab.org. 19 * 20 * 4. Products derived from this Software may not be called "Exolab" 21 * nor may "Exolab" appear in their names without prior written 22 * permission of Exoffice Technologies. Exolab is a registered 23 * trademark of Exoffice Technologies. 24 * 25 * 5. Due credit should be given to the Exolab Project 26 * (http://www.exolab.org/). 27 * 28 * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT 30 * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 31 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 32 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 33 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 34 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 35 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 37 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 38 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 39 * OF THE POSSIBILITY OF SUCH DAMAGE. 40 * 41 * Copyright 2000-2001,2003 (C) Exoffice Technologies Inc. All Rights Reserved. 42 */ 43 44 package org.exolab.jms.selector; 45 46 47 /*** 48 * This class is the base class for all expressions that are binary 49 * operators. 50 * 51 * @version $Revision: 1.4 $ $Date: 2003/08/09 15:49:50 $ 52 * @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a> 53 * @see Expression 54 * @see Operator 55 */ 56 abstract class BinaryOperator extends Operator { 57 58 /*** 59 * The left-hand side of the binary expression 60 */ 61 private final Expression _lhs; 62 63 /*** 64 * The right-hand side of the binary expression 65 */ 66 private final Expression _rhs; 67 68 /*** 69 * Construct a new <code>BinaryOperator</code> 70 * 71 * @param operator the operator 72 * @param lhs the left hand side of the expression 73 * @param rhs the right hand side of the expression 74 */ 75 public BinaryOperator(final String operator, final Expression lhs, 76 final Expression rhs) { 77 super(operator); 78 _lhs = lhs; 79 _rhs = rhs; 80 } 81 82 /*** 83 * Returns the left hand side of the expression 84 * 85 * @return the left hand side of the expression 86 */ 87 public final Expression left() { 88 return _lhs; 89 } 90 91 /*** 92 * Returns the right hand side of the expression 93 * 94 * @return the right hand side of the expression 95 */ 96 public final Expression right() { 97 return _rhs; 98 } 99 100 /*** 101 * Returns a stringified version of the expression 102 * 103 * @return a stringified version of the expression 104 */ 105 public final String toString() { 106 StringBuffer result = new StringBuffer(); 107 result.append('('); 108 result.append(_lhs.toString()); 109 result.append(' '); 110 result.append(operator()); 111 result.append(' '); 112 result.append(_rhs.toString()); 113 result.append(')'); 114 return result.toString(); 115 } 116 117 } //-- BinaryOperator

This page was automatically generated by Maven