groovy.util.MapEntry Maven / Gradle / Ivy
/*
* Copyright 2003-2007 the original author or authors.
*
* 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.
*/
package groovy.util;
import java.util.Map;
import org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation;
/**
* A Map.Entry implementation.
*
* @author James Strachan
* @version $Revision$
*/
public class MapEntry implements Map.Entry {
private Object key;
private Object value;
public MapEntry(Object key, Object value) {
this.key = key;
this.value = value;
}
public boolean equals(Object that) {
if (that instanceof MapEntry) {
return equals((MapEntry) that);
}
return false;
}
public boolean equals(MapEntry that) {
return DefaultTypeTransformation.compareEqual(this.key, that.key) && DefaultTypeTransformation.compareEqual(this.value, that.value);
}
public int hashCode() {
return hash(key) ^ hash(value);
}
public String toString() {
return "" + key + ":" + value;
}
public Object getKey() {
return key;
}
public void setKey(Object key) {
this.key = key;
}
public Object getValue() {
return value;
}
public Object setValue(Object value) {
this.value = value;
return value;
}
/**
* Helper method to handle object hashes for possibly null values
*/
protected int hash(Object object) {
return (object == null) ? 0xbabe : object.hashCode();
}
}