contentmetadataimpl.java

jxta-cms-src-2.4.zip 是官网上的比较稳定的CMS源代码。目前是最稳定的高版本。

/*
 * Copyright (c) 2001 Sun Microsystems, Inc.  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 acknowledgment:
 *       "This product includes software developed by the
 *       Sun Microsystems, Inc. for Project JXTA."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact Project JXTA at http://www.jxta.org.
 *
 * 5. Products derived from this software may not be called "JXTA",
 *    nor may "JXTA" appear in their name, without prior written
 *    permission of Sun.
 *
 * 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,
 * 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.
 *
 *====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of Project JXTA.  For more
 * information on Project JXTA, please see
 * <http://www.jxta.org/>.
 *
 * This license is based on the BSD license adopted by the Apache Foundation.
 *
 * $Id: ContentMetadataImpl.java,v 1.3 2006/03/15 20:33:22 bondolo Exp $
 *
 */

package net.jxta.share.metadata;

import net.jxta.document.*;

import org.apache.log4j.Level;
import org.apache.log4j.Logger;

import java.util.*;

/**
 *@version $Revision: 1.3 $
 *@author $Author: bondolo $
 */
public class ContentMetadataImpl extends ContentMetadata {

    private final static transient Logger LOG
	= Logger.getLogger(ContentMetadataImpl.class.getName());

    private String value;

    /**Return the ContentMetadataConstructor used to create instances of this
     * class
     */
    public static ContentMetadataConstructor getConstructor() {
	return new ContentMetadataConstructor() {
		public ContentMetadata newInstance(Element metadataEl)
		throws IllegalArgumentException {
		    if(metadataEl == null)
			throw new IllegalArgumentException();
		    return new ContentMetadataImpl(metadataEl);
		}
	    };
    }

    public ContentMetadataImpl(Element metadata)
	throws IllegalArgumentException {
	init(metadata);
	value = (String)metadata.getValue();
    }
    
    /**A safe copy constructor*/
    public ContentMetadataImpl(ContentMetadataImpl cmi) {
    	name = cmi.name;
    	location = cmi.location;
    	content_type = cmi.content_type;
    	value = cmi.value;
    }
    
/**A function for generating safe copies of this ContentMetadata object.
 *
 * @return a safe copy of this ContentMetadata object
 */
    public Object clone() throws CloneNotSupportedException {
    	return new ContentMetadataImpl(this);
    }
    
    public String getValue() {
	return value;
    }
}