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/*
 * Copyright (c) 2006, David Peterson
 * 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 "randombits.org" 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.
 */
package com.servicerocket.confluence.randombits.storage;

import java.util.Map;
import java.util.Set;

/**
 * 
 * @author David Peterson
 */
public class MapStorage extends ObjectBasedStorage {
    private Map base;

    /**
     * @param base
     *            The Map serving as the base storage location.
     */
    public MapStorage( Map base ) {
        super( BoxType.Real );
        this.base = base;
    }

    /**
     * @return the Map at the base of the storage location.
     */
    public Map getBaseMap() {
        return base;
    }

    @Override protected Set baseNameSet() {
        return base.keySet();
    }

    @Override protected Object getBaseObject( String name ) {
        return base.get( name );
    }

    @Override protected void setBaseObject( String name, Object value ) {
        if ( value == null )
            base.remove( name );
        else
            base.put( name, value );
    }

    @Override public boolean isReadOnly() {
        return false;
    }
}