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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
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 *
 * Modifications:
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package com.sun.jersey.core.util;

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import javax.ws.rs.core.MultivaluedMap;

/**
 * An implementation of {@link MultivaluedMap} where keys are instances of
 * String and are compared ignoring case.
 *
 * @param  the type of values.
 * @author [email protected]
 */
public class StringKeyIgnoreCaseMultivaluedMap
        extends KeyComparatorLinkedHashMap>
        implements MultivaluedMap {
        
    public StringKeyIgnoreCaseMultivaluedMap() {
        super(StringIgnoreCaseKeyComparator.SINGLETON);
    }

    public StringKeyIgnoreCaseMultivaluedMap(StringKeyIgnoreCaseMultivaluedMap that) {
        super(StringIgnoreCaseKeyComparator.SINGLETON);
        for (Map.Entry> e : that.entrySet()) {
            this.put(e.getKey(), new ArrayList(e.getValue()));
        }
    }

    // MultivaluedMap
    
    public void putSingle(String key, V value) {
        if (value == null)
            return;
        
        List l = getList(key);
        l.clear();
        l.add(value);
    }
    
    public void add(String key, V value) {
        if (value == null)
            return;
        
        List l = getList(key);
        l.add(value);        
    }
    
    public V getFirst(String key) {
        List values = get(key);
        if (values != null && values.size() > 0)
            return values.get(0);
        else
            return null;
    }    
    
    protected List getList(String key) {
        List l = get(key);
        if (l == null) {
            l = new LinkedList();
            put(key, l);
        }
        return l;
    }
}