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'databene commons' is an open source Java library by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

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/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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 org.databene.commons.collection;

import java.util.Map;

import org.databene.commons.OrderedMap;

/**
 * Maps name strings to objects ignoring the capitalization of the name.
 * Created: 12.12.2012 11:08:44
 * @param  the type of the collection's elements
 * @since 0.5.21
 * @author Volker Bergmann
 */
public class CaseIgnorantOrderedNameMap extends OrderedMap {
	
    private static final long serialVersionUID = -3134506770888057108L;

	// constructors + factory methods ----------------------------------------------------------------------------------
	
	public CaseIgnorantOrderedNameMap() {
	}
    
    public CaseIgnorantOrderedNameMap(Map that) {
		super(that);
	}

    // Map interface implementation ------------------------------------------------------------------------------------
    
	@Override
	public boolean containsKey(Object key) {
        return containsKey((String) key);
    }

	public boolean containsKey(String key) {
        return super.containsKey(normalizeKey(key));
    }

	@Override
	public E get(Object key) {
		return get((String) key);
	}
	
	public E get(String key) {
        return super.get(normalizeKey(key));
    }

	@Override
	public Map.Entry getEntry(String key) {
        String normalizedKey = normalizeKey(key);
		E value = super.get(normalizedKey);
        return new MapEntry(normalizedKey, value);
    }

    @Override
    public E put(String key, E value) {
        return super.put(normalizeKey(key), value); 
    }

    public E remove(String key) {
        return super.remove(normalizeKey(key));
    }

    // private helpers -------------------------------------------------------------------------------------------------
    
    private static String normalizeKey(String key) {
		return (key != null ? key.toLowerCase() : key);
	}
    
}