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Cayenne Object Persistence Framework
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 *  to you under the Apache License, Version 2.0 (the
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package org.apache.cayenne.remote.hessian;

import java.util.HashMap;
import java.util.Map;

import org.apache.cayenne.DataRow;
import org.apache.cayenne.util.PersistentObjectList;

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

/**
 * An object that manages all custom (de)serializers used on the client.
 * 
 * @since 1.2
 * @author Andrus Adamchik
 */
class ClientSerializerFactory extends AbstractSerializerFactory {

    private Map deserializers;
    private Deserializer dataRowDeserializer;

    public Serializer getSerializer(Class cl) throws HessianProtocolException {
        return null;
    }

    public Deserializer getDeserializer(Class cl) throws HessianProtocolException {
        Deserializer deserializer = null;

        if (PersistentObjectList.class.isAssignableFrom(cl)) {

            synchronized (this) {

                if (deserializers != null) {
                    deserializer = (Deserializer) deserializers.get(cl);
                }

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

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

                    deserializers.put(cl, deserializer);
                }
            }
        }
        else if(DataRow.class.isAssignableFrom(cl)) {
            if(dataRowDeserializer == null) {
                dataRowDeserializer = new DataRowDeserializer();
            }
            
            return dataRowDeserializer;
        }

        return deserializer;
    }
}