Coverage Report - org.mule.expression.MessageExpressionEvaluator
 
Classes in this File Line Coverage Branch Coverage Complexity
MessageExpressionEvaluator
0%
0/26
0%
0/22
8.333
 
 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.expression;
 8  
 
 9  
 import org.mule.api.ExceptionPayload;
 10  
 import org.mule.api.MuleMessage;
 11  
 import org.mule.api.expression.ExpressionEvaluator;
 12  
 import org.mule.util.StringUtils;
 13  
 
 14  
 import org.apache.commons.logging.Log;
 15  
 import org.apache.commons.logging.LogFactory;
 16  
 
 17  
 /**
 18  
  * Returns properties on the MuleMessage itself. The supported expressions map directly to methods on the message.
 19  
  * For example:
 20  
  * <ul>
 21  
  * <li>id - returns the value of {@link MuleMessage#getUniqueId()}</li>
 22  
  * <li>correlationId - returns the value of {@link MuleMessage#getCorrelationId()}</li>
 23  
  * <li>correlationGroupSize - returns the value of {@link MuleMessage#getCorrelationGroupSize()}</li>
 24  
  * <li>correlationSequence - returns the value of {@link MuleMessage#getCorrelationSequence()}</li>
 25  
  * <li>replyTo - returns the value of {@link MuleMessage#getReplyTo()}</li>
 26  
  * <li>payload - returns the value of {@link MuleMessage#getPayload()}</li>
 27  
  * <li>encoding - returns the value of {@link MuleMessage#getEncoding()}</li>
 28  
  * <li>exception - returns the value of <code>MuleMessage.getExceptionPayload().getException()</code> or null if there is no exception payload</li>
 29  
  * </ul>
 30  
  * If no expression is set the MuleMessage itself will be returned.
 31  
  * <p/>
 32  
  * If the object passed in is not a MuleMessage, the same object will be returned.
 33  
  *
 34  
  * @see ExpressionEvaluator
 35  
  * @see DefaultExpressionManager
 36  
  */
 37  0
 public class MessageExpressionEvaluator implements ExpressionEvaluator
 38  
 {
 39  
     public static final String NAME = "message";
 40  
 
 41  
     /**
 42  
      * logger used by this class
 43  
      */
 44  0
     protected transient final Log logger = LogFactory.getLog(MessagePayloadExpressionEvaluator.class);
 45  
 
 46  
     public Object evaluate(String expression, MuleMessage message)
 47  
     {
 48  0
         if (StringUtils.isEmpty(expression) || message==null)
 49  
         {
 50  0
             return message;
 51  
         }
 52  
         else
 53  
         {
 54  0
             if (expression.equals("id"))
 55  
             {
 56  0
                 return message.getUniqueId();
 57  
             }
 58  0
             else if (expression.equals("correlationId"))
 59  
             {
 60  0
                 return message.getCorrelationId();
 61  
             }
 62  0
             else if (expression.equals("correlationSequence"))
 63  
             {
 64  0
                 return message.getCorrelationSequence();
 65  
             }
 66  0
             else if (expression.equals("correlationGroupSize"))
 67  
             {
 68  0
                 return message.getCorrelationGroupSize();
 69  
             }
 70  0
             else if (expression.equals("replyTo"))
 71  
             {
 72  0
                 return message.getReplyTo();
 73  
             }
 74  0
             else if (expression.equals("payload"))
 75  
             {
 76  0
                 return message.getPayload();
 77  
             }
 78  0
             else if (expression.equals("encoding"))
 79  
             {
 80  0
                 return message.getEncoding();
 81  
             }
 82  0
             else if (expression.equals("exception"))
 83  
             {
 84  0
                 ExceptionPayload ep = message.getExceptionPayload();
 85  0
                 if (ep != null)
 86  
                 {
 87  0
                     return ep.getException();
 88  
                 }
 89  0
                 return null;
 90  
             }
 91  
             else
 92  
             {
 93  0
                 throw new IllegalArgumentException(expression);
 94  
             }
 95  
 
 96  
         }
 97  
     }
 98  
 
 99  
 
 100  
     /**
 101  
      * {@inheritDoc}
 102  
      */
 103  
     public String getName()
 104  
     {
 105  0
         return NAME;
 106  
     }
 107  
 
 108  
     /**
 109  
      * {@inheritDoc}
 110  
      */
 111  
     public void setName(String name)
 112  
     {
 113  0
         throw new UnsupportedOperationException();
 114  
     }
 115  
 }