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/*
* ====================================================================
* Project: openMDX/Core, http://www.openmdx.org/
* Description: Internalized Key Map
* Owner: OMEX AG, Switzerland, http://www.omex.ch
* ====================================================================
*
* This software is published under the BSD license as listed below.
*
* Copyright (c) 2013, OMEX AG, Switzerland
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* * Neither the name of the openMDX team nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* ------------------
*
* This product includes software developed by other organizations as
* listed in the NOTICE file.
*/
package org.openmdx.kernel.collection;
import java.util.AbstractMap;
import java.util.Collection;
import java.util.IdentityHashMap;
import java.util.Set;
/**
* The keys are restricted to String, Short,
* Integer and Long values.
*/
public class InternalizedKeyMap extends AbstractMap {
/**
* Constructor
*/
public InternalizedKeyMap(){
delegate = new IdentityHashMap();
}
/**
* Constructs a new, empty map with the specified expected maximum size.
* Putting more than the expected number of key-value mappings into
* the map may cause the internal data structure to grow, which may be
* somewhat time-consuming.
*
* @param expectedMaxSize the expected maximum size of the map
* @throws IllegalArgumentException if expectedMaxSize is negative
*/
public InternalizedKeyMap(
int expectedMaxSize
){
delegate = new IdentityHashMap(expectedMaxSize);
}
/**
* The delegate map
*/
private final IdentityHashMap delegate;
/* (non-Javadoc)
* @see java.util.AbstractMap#entrySet()
*/
@Override
public Set> entrySet() {
return this.delegate.entrySet();
}
/* (non-Javadoc)
* @see java.util.AbstractMap#containsKey(java.lang.Object)
*/
@Override
public boolean containsKey(Object key) {
return
InternalizedKeys.isInternalizable(key) &&
this.delegate.containsKey(InternalizedKeys.internalize(key));
}
/* (non-Javadoc)
* @see java.util.AbstractMap#get(java.lang.Object)
*/
@Override
public V get(Object key) {
return InternalizedKeys.isInternalizable(key) ?
this.delegate.get(InternalizedKeys.internalize(key)) :
null;
}
/* (non-Javadoc)
* @see java.util.AbstractMap#put(java.lang.Object, java.lang.Object)
*/
@Override
public V put(K key, V value) {
K internalizedKey = InternalizedKeys.internalize(key);
return this.delegate.put(internalizedKey, value);
}
/* (non-Javadoc)
* @see java.util.AbstractMap#remove(java.lang.Object)
*/
@Override
public V remove(Object key) {
return InternalizedKeys.isInternalizable(key) ?
this.delegate.remove(InternalizedKeys.internalize(key)) :
null;
}
/* (non-Javadoc)
* @see java.util.AbstractMap#containsValue(java.lang.Object)
*/
@Override
public boolean containsValue(Object value) {
return this.delegate.containsValue(value);
}
/* (non-Javadoc)
* @see java.util.AbstractMap#keySet()
*/
@Override
public Set keySet() {
return this.delegate.keySet();
}
/* (non-Javadoc)
* @see java.util.AbstractMap#values()
*/
@Override
public Collection values() {
return this.delegate.values();
}
/* (non-Javadoc)
* @see java.util.AbstractMap#size()
*/
@Override
public int size() {
return this.delegate.size();
}
/* (non-Javadoc)
* @see java.util.AbstractMap#isEmpty()
*/
@Override
public boolean isEmpty() {
return this.delegate.isEmpty();
}
/* (non-Javadoc)
* @see java.util.AbstractMap#clear()
*/
@Override
public void clear() {
this.delegate.clear();
}
}
