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  
  * 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;
 8  
 
 9  
 import org.mule.api.MuleContext;
 10  
 import org.mule.api.MuleMessage;
 11  
 import org.mule.api.endpoint.ImmutableEndpoint;
 12  
 import org.mule.api.lifecycle.InitialisationException;
 13  
 import org.mule.api.transformer.DataType;
 14  
 import org.mule.api.transformer.Transformer;
 15  
 import org.mule.api.transformer.TransformerException;
 16  
 import org.mule.util.StringUtils;
 17  
 
 18  
 import java.util.Arrays;
 19  
 import java.util.Iterator;
 20  
 import java.util.LinkedList;
 21  
 import java.util.List;
 22  
 
 23  
 /**
 24  
  * A referencable chain of transformers that can be used as a single transformer
 25  
  */
 26  
 public class TransformerChain extends AbstractMessageTransformer
 27  
 {
 28  
     private List<Transformer> transformers;
 29  
 
 30  
     public TransformerChain(List<Transformer> transformers)
 31  
     {
 32  0
         super();
 33  0
         if (transformers.size() < 1)
 34  
         {
 35  0
             throw new IllegalArgumentException("You must set at least one transformer");
 36  
         }
 37  0
         this.transformers = new LinkedList<Transformer>(transformers);
 38  0
     }
 39  
 
 40  
     public TransformerChain(Transformer... transformers)
 41  
     {
 42  0
         this(Arrays.asList(transformers));
 43  0
         this.name = generateTransformerName();
 44  0
     }
 45  
 
 46  
     public TransformerChain(String name, List<Transformer> transformers)
 47  
     {
 48  0
         this(transformers);
 49  0
         this.name = name;
 50  0
     }
 51  
 
 52  
     public TransformerChain(String name, Transformer... transformers)
 53  
     {
 54  0
         this(name, Arrays.asList(transformers));
 55  0
     }
 56  
 
 57  
     @Override
 58  
     public Object transformMessage(MuleMessage message, String outputEncoding) throws TransformerException
 59  
     {
 60  0
         MuleMessage result = message;
 61  0
         Object temp = message;
 62  0
         Transformer lastTransformer = null;
 63  0
         for (Iterator iterator = transformers.iterator(); iterator.hasNext();)
 64  
         {
 65  0
             lastTransformer = (Transformer) iterator.next();
 66  0
             temp = lastTransformer.transform(temp);
 67  0
             if (temp instanceof MuleMessage)
 68  
             {
 69  0
                 result = (MuleMessage) temp;
 70  
             }
 71  
             else
 72  
             {
 73  0
                 result.setPayload(temp);
 74  
             }
 75  
         }
 76  0
         if (lastTransformer != null && lastTransformer.getReturnClass().equals(MuleMessage.class))
 77  
         {
 78  0
             return result;
 79  
         }
 80  
         else
 81  
         {
 82  0
             return result.getPayload();
 83  
         }
 84  
     }
 85  
 
 86  
     @Override
 87  
     public void initialise() throws InitialisationException
 88  
     {
 89  0
         for (Transformer transformer : transformers)
 90  
         {
 91  0
             transformer.initialise();
 92  
         }
 93  0
     }
 94  
 
 95  
     @Override
 96  
     public void setMuleContext(MuleContext muleContext)
 97  
     {
 98  0
         super.setMuleContext(muleContext);
 99  0
         for (Transformer transformer : transformers)
 100  
         {
 101  0
             transformer.setMuleContext(muleContext);
 102  
         }
 103  0
     }
 104  
 
 105  
     @Override
 106  
     public void setEndpoint(ImmutableEndpoint endpoint)
 107  
     {
 108  0
         super.setEndpoint(endpoint);
 109  0
         for (Transformer transformer : transformers)
 110  
         {
 111  0
             transformer.setEndpoint(endpoint);
 112  
         }
 113  0
     }
 114  
 
 115  
     @Override
 116  
     protected String generateTransformerName()
 117  
     {
 118  0
         String name = transformers.get(0).getClass().getSimpleName();
 119  0
         int i = name.indexOf("To");
 120  0
         DataType dt = transformers.get(transformers.size() -1).getReturnDataType();
 121  0
         if (i > 0 && dt != null)
 122  
         {
 123  0
             String target = dt.getType().getSimpleName();
 124  0
             if (target.equals("byte[]"))
 125  
             {
 126  0
                 target = "byteArray";
 127  
             }
 128  0
             name = name.substring(0, i + 2) + StringUtils.capitalize(target);
 129  
         }
 130  0
         return name;
 131  
     }
 132  
 
 133  
 }