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 * 
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 * 
 * Copyright 2002 - 2007 Adobe Systems Incorporated All Rights Reserved.
 * 
 * NOTICE: All information contained herein is, and remains the property of Adobe Systems Incorporated and its suppliers, if any. The intellectual and technical concepts contained herein are
 * proprietary to Adobe Systems Incorporated and its suppliers and may be covered by U.S. and Foreign Patents, patents in process, and are protected by trade secret or copyright law. Dissemination of
 * this information or reproduction of this material is strictly forbidden unless prior written permission is obtained from Adobe Systems Incorporated.
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package flex.messaging.io.amf.translator;

import flex.messaging.io.SerializationContext;
import flex.messaging.io.TypeMarshaller;
import flex.messaging.io.amf.translator.decoder.ActionScriptDecoder;
import flex.messaging.io.amf.translator.decoder.DecoderFactory;
import flex.messaging.util.ClassUtil;
import flex.messaging.util.Trace;

/**
 * ASTranslator provides the ability to convert between ASObjects used by Flex and Java objects in your application.
 */
public class ASTranslator implements TypeMarshaller
{
    /** {@inheritDoc} */
    @Override
    public Object createInstance(Object source, Class desiredClass)
    {
        ActionScriptDecoder decoder = DecoderFactory.getDecoderForShell(desiredClass);

        Object instance = null;
        if (decoder.hasShell())
        {
            instance = decoder.createShell(source, desiredClass);
        }
        else
        {
            instance = ClassUtil.createDefaultInstance(desiredClass, null);
        }

        return instance;
    }

    /**
     * Translate an object to another object of type class. obj types should be ASObject, Boolean, String, Double, Date, ArrayList
     */
    @Override
    public Object convert(Object source, Class desiredClass)
    {
        if (source == null && !desiredClass.isPrimitive())
        {
            return null;
        }

        SerializationContext serializationContext = SerializationContext.getSerializationContext();

        ActionScriptDecoder decoder;
        if (serializationContext.restoreReferences)
            decoder = DecoderFactory.getReferenceAwareDecoder(source, desiredClass);
        else
            decoder = DecoderFactory.getDecoder(source, desiredClass);

        if (Trace.remote)
        {
            Trace.trace("Decoder for " + (source == null ? "null" : source.getClass().toString()) + " with desired " + desiredClass + " is " + decoder.getClass());
        }

        Object result = decoder.decodeObject(source, desiredClass);
        return result;
    }
}