/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.runtime.core.transformer.simple;
import org.mule.runtime.api.metadata.DataType;
import org.mule.runtime.core.api.Event;
import org.mule.runtime.api.lifecycle.InitialisationException;
import org.mule.runtime.core.api.transformer.TransformerException;
import org.mule.runtime.core.config.i18n.CoreMessages;
import org.mule.runtime.core.transformer.AbstractMessageTransformer;
import java.nio.charset.Charset;
/**
* A transformer that uses the transform discovery mechanism to convert the message payload. This transformer works much better
* when transforming custom object types rather that java types since there is less chance for ambiguity. If an exact match cannot
* be made an execption will be thrown.
*/
public class AutoTransformer extends AbstractMessageTransformer {
/**
* Template method where deriving classes can do any initialisation after the properties have been set on this transformer
*
* @throws InitialisationException
*
*/
@Override
public void initialise() throws InitialisationException {
super.initialise();
if (Object.class.equals(getReturnDataType().getType())) {
throw new InitialisationException(CoreMessages.transformerInvalidReturnType(Object.class, getName()), this);
}
}
@Override
public Object transformMessage(Event event, Charset outputEncoding) throws TransformerException {
return muleContext.getTransformationService().transform(event.getMessage(), DataType.fromType(getReturnDataType().getType()))
.getPayload().getValue();
}
}