Coverage Report - org.mule.transformer.TransformerChain
 
Classes in this File Line Coverage Branch Coverage Complexity
TransformerChain
0%
0/45
0%
0/22
0
 
 1  
 /*
 2  
  * $Id: TransformerChain.java 20321 2010-11-24 15:21:24Z dfeist $
 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  
 package org.mule.transformer;
 11  
 
 12  
 import org.mule.api.MuleContext;
 13  
 import org.mule.api.MuleMessage;
 14  
 import org.mule.api.endpoint.ImmutableEndpoint;
 15  
 import org.mule.api.lifecycle.InitialisationException;
 16  
 import org.mule.api.transformer.DataType;
 17  
 import org.mule.api.transformer.Transformer;
 18  
 import org.mule.api.transformer.TransformerException;
 19  
 import org.mule.util.StringUtils;
 20  
 
 21  
 import java.util.Arrays;
 22  
 import java.util.Iterator;
 23  
 import java.util.LinkedList;
 24  
 import java.util.List;
 25  
 
 26  
 /**
 27  
  * A referencable chain of transformers that can be used as a single transformer
 28  
  */
 29  
 public class TransformerChain extends AbstractMessageTransformer
 30  
 {
 31  
     private List<Transformer> transformers;
 32  
 
 33  
     public TransformerChain(List<Transformer> transformers)
 34  
     {
 35  0
         super();
 36  0
         if (transformers.size() < 1)
 37  
         {
 38  0
             throw new IllegalArgumentException("You must set at least one transformer");
 39  
         }
 40  0
         this.transformers = new LinkedList<Transformer>(transformers);
 41  0
     }
 42  
 
 43  
     public TransformerChain(Transformer... transformers)
 44  
     {
 45  0
         this(Arrays.asList(transformers));
 46  0
         this.name = generateTransformerName();
 47  0
     }
 48  
 
 49  
     public TransformerChain(String name, List<Transformer> transformers)
 50  
     {
 51  0
         this(transformers);
 52  0
         this.name = name;
 53  0
     }
 54  
 
 55  
     public TransformerChain(String name, Transformer... transformers)
 56  
     {
 57  0
         this(name, Arrays.asList(transformers));
 58  0
     }
 59  
 
 60  
     @Override
 61  
     public Object transformMessage(MuleMessage message, String outputEncoding) throws TransformerException
 62  
     {
 63  0
         MuleMessage result = message;
 64  0
         Object temp = message;
 65  0
         Transformer lastTransformer = null;
 66  0
         for (Iterator iterator = transformers.iterator(); iterator.hasNext();)
 67  
         {
 68  0
             lastTransformer = (Transformer) iterator.next();
 69  0
             temp = lastTransformer.transform(temp);
 70  0
             if (temp instanceof MuleMessage)
 71  
             {
 72  0
                 result = (MuleMessage) temp;
 73  
             }
 74  
             else
 75  
             {
 76  0
                 result.setPayload(temp);
 77  
             }
 78  
         }
 79  0
         if (lastTransformer != null && lastTransformer.getReturnClass().equals(MuleMessage.class))
 80  
         {
 81  0
             return result;
 82  
         }
 83  
         else
 84  
         {
 85  0
             return result.getPayload();
 86  
         }
 87  
     }
 88  
 
 89  
     @Override
 90  
     public void initialise() throws InitialisationException
 91  
     {
 92  0
         for (Transformer transformer : transformers)
 93  
         {
 94  0
             transformer.initialise();
 95  
         }
 96  0
     }
 97  
 
 98  
     @Override
 99  
     public void setMuleContext(MuleContext muleContext)
 100  
     {
 101  0
         super.setMuleContext(muleContext);
 102  0
         for (Transformer transformer : transformers)
 103  
         {
 104  0
             transformer.setMuleContext(muleContext);
 105  
         }
 106  0
     }
 107  
 
 108  
     @Override
 109  
     public void setEndpoint(ImmutableEndpoint endpoint)
 110  
     {
 111  0
         super.setEndpoint(endpoint);
 112  0
         for (Transformer transformer : transformers)
 113  
         {
 114  0
             transformer.setEndpoint(endpoint);
 115  
         }
 116  0
     }
 117  
 
 118  
     @Override
 119  
     protected String generateTransformerName()
 120  
     {
 121  0
         String name = transformers.get(0).getClass().getSimpleName();
 122  0
         int i = name.indexOf("To");
 123  0
         DataType dt = transformers.get(transformers.size() -1).getReturnDataType();
 124  0
         if (i > 0 && dt != null)
 125  
         {
 126  0
             String target = dt.getType().getSimpleName();
 127  0
             if (target.equals("byte[]"))
 128  
             {
 129  0
                 target = "byteArray";
 130  
             }
 131  0
             name = name.substring(0, i + 2) + StringUtils.capitalize(target);
 132  
         }
 133  0
         return name;
 134  
     }
 135  
 
 136  
 }