org.milyn.persistence.parameter.ParameterIndex Maven / Gradle / Ivy
/*
Milyn - Copyright (C) 2006 - 2010
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License (version 2.1) as published by the Free Software
Foundation.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU Lesser General Public License for more details:
http://www.gnu.org/licenses/lgpl.txt
*/
package org.milyn.persistence.parameter;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* @author [email protected]
*
*/
public abstract class ParameterIndex> {
private final Map indexMap = new HashMap();
public P register(K value) {
P parameter = indexMap.get(value);
if(parameter == null) {
parameter = createParameter(value);
indexMap.put(value, parameter);
}
return parameter;
}
protected abstract P createParameter(K value) ;
public P getParameter(Object keyValue) {
return indexMap.get(keyValue);
}
public boolean containsKey(Object key) {
return indexMap.containsKey(key);
}
public boolean containsParameter(Object parameter) {
return indexMap.containsValue(parameter);
}
public Map getIndexMap() {
return Collections.unmodifiableMap(indexMap) ;
}
public int size() {
return indexMap.size();
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
return indexMap.hashCode();
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
public boolean equals(ParameterIndex rhs) {
return indexMap.equals(rhs.indexMap);
}
}