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,
078: that.key)
079: && DefaultTypeTransformation.compareEqual(this .value,
080: that.value);
081: }
082:
083: public int hashCode() {
084: return hash(key) ^ hash(value);
085: }
086:
087: public String toString() {
088: return "" + key + ":" + value;
089: }
090:
091: public Object getKey() {
092: return key;
093: }
094:
095: public void setKey(Object key) {
096: this .key = key;
097: }
098:
099: public Object getValue() {
100: return value;
101: }
102:
103: public Object setValue(Object value) {
104: this .value = value;
105: return value;
106: }
107:
108: /**
109: * Helper method to handle object hashes for possibly null values
110: */
111: protected int hash(Object object) {
112: return (object == null) ? 0xbabe : object.hashCode();
113: }
114:
115: }
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