org.objectstyle.cayenne.remote.hessian.EnumSerializerFactory Maven / Gradle / Ivy

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/* ====================================================================
 * 
 * The ObjectStyle Group Software License, version 1.1
 * ObjectStyle Group - http://objectstyle.org/
 * 
 * Copyright (c) 2002-2005, Andrei (Andrus) Adamchik and individual authors
 * of the software. 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 independent contributors
 *    and hosted on ObjectStyle Group web site (http://objectstyle.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
 * 
 * 4. The names "ObjectStyle Group" and "Cayenne" must not be used to endorse
 *    or promote products derived from this software without prior written
 *    permission. For written permission, email
 *    "andrus at objectstyle dot org".
 * 
 * 5. Products derived from this software may not be called "ObjectStyle"
 *    or "Cayenne", nor may "ObjectStyle" or "Cayenne" appear in their
 *    names without prior written permission.
 * 
 * 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 OBJECTSTYLE GROUP 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 and hosted on ObjectStyle Group web site.  For more
 * information on the ObjectStyle Group, please see
 * .
 */
package org.objectstyle.cayenne.remote.hessian;

import java.util.HashMap;

import com.caucho.hessian.io.AbstractSerializerFactory;
import com.caucho.hessian.io.Deserializer;
import com.caucho.hessian.io.HessianProtocolException;
import com.caucho.hessian.io.Serializer;

/**
 * A Hessian SerializerFactory extension that supports serializing Enums.
 * 
 * Requires Java 1.5 or newer
 * 
 * 
 * @since 1.2
 * @author Andrus Adamchik
 */
class EnumSerializerFactory extends AbstractSerializerFactory {

    private final EnumSerializer enumSerializer = new EnumSerializer();
    private HashMap cachedDeserializerMap;

    public Serializer getSerializer(Class cl) throws HessianProtocolException {
        return (cl.isEnum()) ? enumSerializer : null;
    }

    public Deserializer getDeserializer(Class cl) throws HessianProtocolException {
        if (cl.isEnum()) {
            Deserializer deserializer = null;
            
            synchronized (this) {
                
                if (cachedDeserializerMap != null) {
                    deserializer = cachedDeserializerMap.get(cl);
                }

                if (deserializer == null) {
                    deserializer = new EnumDeserializer(cl);

                    if (cachedDeserializerMap == null) {
                        cachedDeserializerMap = new HashMap();
                    }

                    cachedDeserializerMap.put(cl, deserializer);
                }
            }

            return deserializer;
        }

        return null;
    }
}