AbstractTrie.java

//
//  ========================================================================
//  Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
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//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
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package org.eclipse.jetty.util;

import java.nio.ByteBuffer;
import java.nio.charset.StandardCharsets;


/** 
 * Abstract Trie implementation.
 * <p>Provides some common implementations, which may not be the most
 * efficient. For byte operations, the assumption is made that the charset
 * is ISO-8859-1</p>
 * 
 * @param <V> the type of object that the Trie holds
 */
public abstract class AbstractTrie<V> implements Trie<V>
{
    final boolean _caseInsensitive;
    
    protected AbstractTrie(boolean insensitive)
    {
        _caseInsensitive=insensitive;
    }

    @Override
    public boolean put(V v)
    {
        return put(v.toString(),v);
    }

    @Override
    public V remove(String s)
    {
        V o=get(s);
        put(s,null);
        return o;
    }

    @Override
    public V get(String s)
    {
        return get(s,0,s.length());
    }

    @Override
    public V get(ByteBuffer b)
    {
        return get(b,0,b.remaining());
    }

    @Override
    public V getBest(String s)
    {
        return getBest(s,0,s.length());
    }
    
    @Override
    public V getBest(byte[] b, int offset, int len)
    {
        return getBest(new String(b,offset,len,StandardCharsets.ISO_8859_1));
    }

    @Override
    public boolean isCaseInsensitive()
    {
        return _caseInsensitive;
    }

}