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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.transformer.simple;
8   
9   import org.mule.RequestContext;
10  import org.mule.api.transformer.TransformerException;
11  import org.mule.api.transport.OutputHandler;
12  import org.mule.transformer.types.DataTypeFactory;
13  import org.mule.util.IOUtils;
14  
15  import java.io.ByteArrayOutputStream;
16  import java.io.IOException;
17  import java.io.InputStream;
18  
19  /**
20   * <code>ObjectToByteArray</code> converts serilaizable object to a byte array but
21   * treats <code>java.lang.String</code> differently by converting to bytes using
22   * the <code>String.getBytrs()</code> method.
23   */
24  public class ObjectToByteArray extends SerializableToByteArray
25  {
26      public ObjectToByteArray()
27      {
28          this.registerSourceType(DataTypeFactory.INPUT_STREAM);
29          this.registerSourceType(DataTypeFactory.STRING);
30          this.registerSourceType(DataTypeFactory.create(OutputHandler.class));
31          setReturnDataType(DataTypeFactory.BYTE_ARRAY);
32      }
33  
34      @Override
35      public Object doTransform(Object src, String outputEncoding) throws TransformerException
36      {
37          try
38          {
39              if (src instanceof String)
40              {
41                  return src.toString().getBytes(outputEncoding);
42              }
43              else if (src instanceof InputStream)
44              {
45                  InputStream is = (InputStream) src;
46                  ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
47                  try
48                  {
49                      IOUtils.copyLarge(is, byteOut);
50                  }
51                  finally
52                  {
53                      is.close();
54                  }
55                  return byteOut.toByteArray();
56              }
57              else if (src instanceof OutputHandler)
58              {
59                  ByteArrayOutputStream bytes = new ByteArrayOutputStream();
60                  
61                  try
62                  {
63                      ((OutputHandler) src).write(RequestContext.getEvent(), bytes);
64                      
65                      return bytes.toByteArray();
66                  }
67                  catch (IOException e)
68                  {
69                      throw new TransformerException(this, e);
70                  }
71              }
72          }
73          catch (Exception e)
74          {
75              throw new TransformerException(this, e);
76          }
77  
78          return super.doTransform(src, outputEncoding);
79      }
80  }