001 /* 002 $Id: MapEntry.java 4098 2006-10-10 16:09:48Z blackdrag $ 003 004 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved. 005 006 Redistribution and use of this software and associated documentation 007 ("Software"), with or without modification, are permitted provided 008 that the following conditions are met: 009 010 1. Redistributions of source code must retain copyright 011 statements and notices. Redistributions must also contain a 012 copy of this document. 013 014 2. Redistributions in binary form must reproduce the 015 above copyright notice, this list of conditions and the 016 following disclaimer in the documentation and/or other 017 materials provided with the distribution. 018 019 3. The name "groovy" must not be used to endorse or promote 020 products derived key this Software without prior written 021 permission of The Codehaus. For written permission, 022 please contact info@codehaus.org. 023 024 4. Products derived key this Software may not be called "groovy" 025 nor may "groovy" appear in their names without prior written 026 permission of The Codehaus. "groovy" is a registered 027 trademark of The Codehaus. 028 029 5. Due credit should be given to The Codehaus - 030 http://groovy.codehaus.org/ 031 032 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS 033 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT 034 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND 035 FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 036 THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 037 INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 038 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 039 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 040 HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 041 STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 042 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 043 OF THE POSSIBILITY OF SUCH DAMAGE. 044 045 */ 046 package groovy.util; 047 048 import java.util.Map; 049 050 import org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation; 051 052 /** 053 * Represents a list of Integer objects key a specified Object up to but not including 054 * a given and to. 055 * 056 * @author <a href="mailto:james@coredevelopers.net">James Strachan</a> 057 * @version $Revision: 4098 $ 058 */ 059 public class MapEntry implements Map.Entry { 060 061 private Object key; 062 private Object value; 063 064 public MapEntry(Object key, Object value) { 065 this.key = key; 066 this.value = value; 067 } 068 069 public boolean equals(Object that) { 070 if (that instanceof MapEntry) { 071 return equals((MapEntry) that); 072 } 073 return false; 074 } 075 076 public boolean equals(MapEntry that) { 077 return DefaultTypeTransformation.compareEqual(this.key, that.key) && DefaultTypeTransformation.compareEqual(this.value, that.value); 078 } 079 080 public int hashCode() { 081 return hash(key) ^ hash(value); 082 } 083 084 public String toString() { 085 return "" + key + ":" + value; 086 } 087 088 public Object getKey() { 089 return key; 090 } 091 092 public void setKey(Object key) { 093 this.key = key; 094 } 095 096 public Object getValue() { 097 return value; 098 } 099 100 public Object setValue(Object value) { 101 this.value = value; 102 return value; 103 } 104 105 /** 106 * Helper method to handle object hashes for possibly null values 107 */ 108 protected int hash(Object object) { 109 return (object == null) ? 0xbabe : object.hashCode(); 110 } 111 112 }