/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2005 Sun Microsystems Inc. All Rights Reserved
*
* The contents of this file are subject to the terms
* of the Common Development and Distribution License
* (the License). You may not use this file except in
* compliance with the License.
*
* You can obtain a copy of the License at
* https://opensso.dev.java.net/public/CDDLv1.0.html or
* opensso/legal/CDDLv1.0.txt
* See the License for the specific language governing
* permission and limitations under the License.
*
* When distributing Covered Code, include this CDDL
* Header Notice in each file and include the License file
* at opensso/legal/CDDLv1.0.txt.
* If applicable, add the following below the CDDL Header,
* with the fields enclosed by brackets [] replaced by
* your own identifying information:
* "Portions Copyrighted [year] [name of copyright owner]"
*
* $Id: CaseInsensitiveHashMap.java,v 1.4 2009/01/13 18:08:54 leiming Exp $
*
* Portions Copyrighted 2011-2015 ForgeRock AS.
*/
package com.sun.identity.common;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/**
* A case insensitive hash map with case preservation. If key is a String, a
* case insensitive hash code is used for hashing but original case of the key
* is preserved.
*/
public class CaseInsensitiveHashMap<K, V> extends HashMap<K, V> {
public CaseInsensitiveHashMap() {
super();
}
public CaseInsensitiveHashMap(int initialCapacity) {
super(initialCapacity);
}
public CaseInsensitiveHashMap(int initialCapacity, float loadFactor) {
super(initialCapacity, loadFactor);
}
public CaseInsensitiveHashMap(Map t) {
putAll(t);
}
public boolean containsKey(Object key) {
boolean retval;
if (key instanceof String) {
CaseInsensitiveKey ciKey = new CaseInsensitiveKey((String) key);
retval = super.containsKey(ciKey);
} else {
retval = super.containsKey(key);
}
return retval;
}
public V get(Object key) {
V retval;
if (key instanceof String) {
CaseInsensitiveKey ciKey = new CaseInsensitiveKey((String) key);
retval = super.get(ciKey);
} else {
retval = super.get(key);
}
return retval;
}
/**
* @return a <code>Set</Code> of keys.
*/
public Set<K> keySet() {
return new CaseInsensitiveHashSet<>(super.keySet());
}
/**
* Returns set view of mappings in this map
*
* @return a <code>Set</Code> of map entries
*/
public Set entrySet() {
Set entries = super.entrySet();
HashSet set = new HashSet();
Iterator iter = entries.iterator();
while (iter.hasNext()) {
// keys are CaseInsensitiveKey's,
// hence needs to switched to String
Map.Entry entry = (Map.Entry) iter.next();
set.add(new Entry(entry));
}
return set;
}
public V put(K key, V value) {
V retval;
if (key instanceof String) {
CaseInsensitiveKey ciKey = new CaseInsensitiveKey((String) key);
retval = super.put((K) ciKey, value);
} else {
retval = super.put(key, value);
}
return retval;
}
public void putAll(Map<? extends K, ? extends V> map) {
if (map == null || map.isEmpty()) {
return;
}
for (Map.Entry<? extends K, ? extends V> entry : map.entrySet()) {
put(entry.getKey(), entry.getValue());
}
}
public V remove(Object key) {
V retval;
if (key instanceof String) {
CaseInsensitiveKey ciKey = new CaseInsensitiveKey((String) key);
retval = super.remove(ciKey);
} else {
retval = super.remove(key);
}
return retval;
}
static private class Entry implements Map.Entry {
Map.Entry entry;
Entry(Map.Entry entry) {
this.entry = entry;
}
public Object getKey() {
// Since key would CaseInsensitiveKey,
// need to convert it to String
return (entry.getKey().toString());
}
public Object getValue() {
return (entry.getValue());
}
public boolean equals(Object o) {
return (entry.equals(o));
}
public Object setValue(Object o) {
return (entry.setValue(o));
}
public int hashCode() {
return (entry.hashCode());
}
}
}