Coverage Report - org.mule.transformer.simple.ObjectToString
 
Classes in this File Line Coverage Branch Coverage Complexity
ObjectToString
0%
0/41
0%
0/6
0
 
 1  
 /*
 2  
  * $Id: ObjectToString.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.RequestContext;
 14  
 import org.mule.api.transformer.DiscoverableTransformer;
 15  
 import org.mule.api.transformer.TransformerException;
 16  
 import org.mule.api.transport.OutputHandler;
 17  
 import org.mule.config.i18n.CoreMessages;
 18  
 import org.mule.transformer.AbstractTransformer;
 19  
 import org.mule.transformer.types.DataTypeFactory;
 20  
 import org.mule.util.IOUtils;
 21  
 import org.mule.util.StringMessageUtils;
 22  
 
 23  
 import java.io.ByteArrayOutputStream;
 24  
 import java.io.IOException;
 25  
 import java.io.InputStream;
 26  
 import java.io.UnsupportedEncodingException;
 27  
 
 28  
 /**
 29  
  * <code>ObjectToString</code> transformer is useful for debugging. It will return
 30  
  * human-readable output for various kinds of objects. Right now, it is just coded to
 31  
  * handle Map and Collection objects. Others will be added.
 32  
  */
 33  
 public class ObjectToString extends AbstractTransformer implements DiscoverableTransformer
 34  
 {
 35  
     protected static final int DEFAULT_BUFFER_SIZE = 80;
 36  
 
 37  
     /** Give core transformers a slighty higher priority */
 38  0
     private int priorityWeighting = DiscoverableTransformer.DEFAULT_PRIORITY_WEIGHTING + 1;
 39  
 
 40  
     public ObjectToString()
 41  0
     {
 42  0
         registerSourceType(DataTypeFactory.OBJECT);
 43  0
         registerSourceType(DataTypeFactory.BYTE_ARRAY);
 44  0
         registerSourceType(DataTypeFactory.INPUT_STREAM);
 45  0
         registerSourceType(DataTypeFactory.create(OutputHandler.class));
 46  
         //deliberately set the mime for this transformer to text plain so that other transformers
 47  
         //that serialize string types such as XML or JSON will not match this
 48  0
         setReturnDataType(DataTypeFactory.TEXT_STRING);
 49  0
     }
 50  
 
 51  
     @Override
 52  
     public Object doTransform(Object src, String encoding) throws TransformerException
 53  
     {
 54  0
         String output = "";
 55  
 
 56  0
         if (src instanceof InputStream)
 57  
         {
 58  0
             InputStream is = (InputStream) src;
 59  
             try
 60  
             {
 61  0
                 ByteArrayOutputStream byteOut = new ByteArrayOutputStream();
 62  0
                 IOUtils.copy(is, byteOut);
 63  0
                 output = new String(byteOut.toByteArray(), encoding);
 64  
             }
 65  0
             catch (IOException e)
 66  
             {
 67  0
                 throw new TransformerException(CoreMessages.errorReadingStream(), e);
 68  
             }
 69  
             finally
 70  
             {
 71  0
                 try
 72  
                 {
 73  0
                     is.close();
 74  
                 }
 75  0
                 catch (IOException e)
 76  
                 {
 77  0
                     logger.warn("Could not close stream", e);
 78  0
                 }
 79  0
             }
 80  0
         }
 81  0
         else if (src instanceof OutputHandler)
 82  
         {
 83  0
             ByteArrayOutputStream bytes = new ByteArrayOutputStream();
 84  
             
 85  
             try
 86  
             {
 87  0
                 ((OutputHandler) src).write(RequestContext.getEvent(), bytes);
 88  
                 
 89  0
                 output = new String(bytes.toByteArray(), encoding);
 90  
             }
 91  0
             catch (IOException e)
 92  
             {
 93  0
                 throw new TransformerException(this, e);
 94  0
             }
 95  
             
 96  
             
 97  0
         }
 98  0
         else if (src instanceof byte[])
 99  
         {
 100  
             try
 101  
             {
 102  0
                 output = new String((byte[]) src, encoding);
 103  
             }
 104  0
             catch (UnsupportedEncodingException e)
 105  
             {
 106  0
                 throw new TransformerException(this, e);
 107  0
             }
 108  
         }
 109  
         else
 110  
         {
 111  0
             output = StringMessageUtils.toString(src);
 112  
         }
 113  
 
 114  0
         return output;
 115  
     }
 116  
 
 117  
     public int getPriorityWeighting()
 118  
     {
 119  0
         return priorityWeighting;
 120  
     }
 121  
 
 122  
     public void setPriorityWeighting(int priorityWeighting)
 123  
     {
 124  0
         this.priorityWeighting = priorityWeighting;
 125  0
     }
 126  
 }