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1   /*
2    * $Id: HexStringToByteArray.java 19250 2010-08-30 16:53:14Z dirk.olmes $
3    * --------------------------------------------------------------------------------------
4    * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.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  
11  package org.mule.transformer.simple;
12  
13  import org.mule.api.transformer.TransformerException;
14  import org.mule.transformer.AbstractTransformer;
15  import org.mule.transformer.types.DataTypeFactory;
16  import org.mule.util.ArrayUtils;
17  import org.mule.util.StringUtils;
18  
19  /**
20   * Converts a Hex String to a Byte array
21   */
22  public class HexStringToByteArray extends AbstractTransformer
23  {
24      public HexStringToByteArray()
25      {
26          registerSourceType(DataTypeFactory.STRING);
27          setReturnDataType(DataTypeFactory.BYTE_ARRAY);
28      }
29  
30      @Override
31      protected Object doTransform(Object src, String outputEncoding) throws TransformerException
32      {
33          if (src == null)
34          {
35              return ArrayUtils.EMPTY_BYTE_ARRAY;
36          }
37  
38          try
39          {
40              return StringUtils.hexStringToByteArray((String) src);
41          }
42          catch (Exception ex)
43          {
44              throw new TransformerException(this, ex);
45          }
46      }
47  
48  }