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1   /*
2    * $Id: AutoTransformer.java 11604 2008-04-18 22:39:51Z rossmason $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.com
5    *
6    * The software in this package is published under the terms of the CPAL v1.0
7    * license, a copy of which has been included with this distribution in the
8    * LICENSE.txt file.
9    */
10  package org.mule.transformer.simple;
11  
12  import org.mule.transformer.AbstractMessageAwareTransformer;
13  import org.mule.api.MuleMessage;
14  import org.mule.api.lifecycle.InitialisationException;
15  import org.mule.api.transformer.TransformerException;
16  import org.mule.config.i18n.CoreMessages;
17  
18  /**
19   * A transformer that uses the transform discovery mechanism to convert the message payload. This transformer
20   * works much better when transforming custom object types rather that java types since there is less chance for
21   * ambiguity.
22   * If an exact match cannot be made an execption will be thrown.
23   */
24  public class AutoTransformer extends AbstractMessageAwareTransformer
25  {
26      /**
27       * Template method where deriving classes can do any initialisation after the
28       * properties have been set on this transformer
29       *
30       * @throws org.mule.api.lifecycle.InitialisationException
31       *
32       */
33      //@Override
34      public void initialise() throws InitialisationException
35      {
36          super.initialise();
37          if(getReturnClass().equals(Object.class))
38          {
39              throw new InitialisationException(CoreMessages.transformerInvalidReturnType(Object.class, getName()), this);
40          }
41      }
42  
43      public Object transform(MuleMessage message, String outputEncoding) throws TransformerException
44      {
45          return message.getPayload(getReturnClass());
46      }
47  }