src/java/org/apache/commons/jxpath/MapDynamicPropertyHandler.java

/*
 * $Header: /home/jerenkrantz/tmp/commons/commons-convert/cvs/home/cvs/jakarta-commons//jxpath/src/java/org/apache/commons/jxpath/MapDynamicPropertyHandler.java,v 1.2 2002/04/24 03:29:33 dmitri Exp $
 * $Revision: 1.2 $
 * $Date: 2002/04/24 03:29:33 $
 *
 * ====================================================================
 * The Apache Software License, Version 1.1
 *
 *
 * Copyright (c) 1999-2001 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 *
 * 4. The names "The Jakarta Project", "Commons", and "Apache Software
 *    Foundation" must not be used to endorse or promote products derived
 *    from this software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache"
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 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * 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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation and was
 * originally based on software copyright (c) 2001, Plotnix, Inc,
 * <http://www.plotnix.com/>.
 * For more information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 */
package org.apache.commons.jxpath;

import java.util.Iterator;
import java.util.Map;

/**
 * Implements the DynamicPropertyHandler interface for java.util.Map.
 *
 * @author Dmitri Plotnikov
 * @version $Revision: 1.2 $ $Date: 2002/04/24 03:29:33 $
 */
public class MapDynamicPropertyHandler implements DynamicPropertyHandler {

    private static final String[] STRING_ARRAY = new String[0];

    /**
     * Returns string representations of all keys in the map.
     */
    public String[] getPropertyNames(Object object){
        Map map = (Map) object;
        String names[] = new String[map.size()];
        Iterator it = map.keySet().iterator();
        for (int i = 0; i < names.length; i++){
            names[i] = String.valueOf(it.next());
        }
        return names;
    }

    /**
     * Returns the value for the specified key.
     */
    public Object getProperty(Object object, String propertyName) {
        return ((Map) object).get(propertyName);
    }

    /**
     * Sets the specified key value.
     */
    public void setProperty(Object object, String propertyName, Object value){
        ((Map)object).put(propertyName, value);
    }
}