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1   /*
2    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
3    * The software in this package is published under the terms of the CPAL v1.0
4    * license, a copy of which has been included with this distribution in the
5    * LICENSE.txt file.
6    */
7   package org.mule.example.hello;
8   
9   import org.mule.api.transformer.TransformerException;
10  import org.mule.transformer.AbstractTransformer;
11  import org.mule.transformer.types.DataTypeFactory;
12  
13  /**
14   * <code>ExceptionToString</code> converts an exception to a String,
15   * returning the exception's <code>getMessage()</code> result.
16   */
17  public class ExceptionToString extends AbstractTransformer
18  {
19  
20      public ExceptionToString()
21      {
22          super();
23          this.registerSourceType(DataTypeFactory.create(Exception.class));
24          this.setReturnDataType(DataTypeFactory.STRING);
25      }
26  
27      @Override
28      public Object doTransform(Object src, String outputEncoding) throws TransformerException
29      {
30          return ((Exception) src).getMessage();
31      }
32  
33  }