Coverage Report - org.mule.expression.MessagePayloadExpressionEvaluator
 
Classes in this File Line Coverage Branch Coverage Complexity
MessagePayloadExpressionEvaluator
0%
0/16
0%
0/6
4
 
 1  
 /*
 2  
  * $Id: MessagePayloadExpressionEvaluator.java 19191 2010-08-25 21:05:23Z tcarlson $
 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.expression;
 12  
 
 13  
 import org.mule.api.MuleContext;
 14  
 import org.mule.api.MuleMessage;
 15  
 import org.mule.api.MuleRuntimeException;
 16  
 import org.mule.api.context.MuleContextAware;
 17  
 import org.mule.api.expression.ExpressionEvaluator;
 18  
 import org.mule.api.transformer.DataType;
 19  
 import org.mule.api.transformer.TransformerException;
 20  
 import org.mule.config.i18n.CoreMessages;
 21  
 import org.mule.transformer.types.DataTypeFactory;
 22  
 import org.mule.util.ClassUtils;
 23  
 import org.mule.util.StringUtils;
 24  
 
 25  
 import org.apache.commons.logging.Log;
 26  
 import org.apache.commons.logging.LogFactory;
 27  
 
 28  
 /**
 29  
  * Returns the message payload.  If the expression is set to a class name then Mule will attempt to transform the payload by
 30  
  * discovering the correct transformer(s) in the registry. This is only suited for simple transformations between common types.
 31  
  * <p/>
 32  
  * <code>
 33  
  * #[payload:byte[]]
 34  
  * </code>
 35  
  * <p/>
 36  
  * or
 37  
  * <p/>
 38  
  * <code>
 39  
  * #[payload:org.mule.api.OutputHandler]
 40  
  * </code>
 41  
  * <p/>
 42  
  * If the object passed in is not a MuleMessage, the same object will be returned.
 43  
  *
 44  
  * @see org.mule.api.expression.ExpressionEvaluator
 45  
  * @see DefaultExpressionManager
 46  
  */
 47  0
 public class MessagePayloadExpressionEvaluator implements ExpressionEvaluator, MuleContextAware
 48  
 {
 49  
     public static final String NAME = "payload";
 50  
     public static final String BYTE_ARRAY = "byte[]";
 51  
 
 52  
     /**
 53  
      * logger used by this class
 54  
      */
 55  0
     protected transient final Log logger = LogFactory.getLog(MessagePayloadExpressionEvaluator.class);
 56  
 
 57  
     protected MuleContext muleContext;
 58  
 
 59  
     public void setMuleContext(MuleContext context)
 60  
     {
 61  0
         this.muleContext = context;
 62  0
     }
 63  
 
 64  
     public Object evaluate(String expression, MuleMessage message)
 65  
     {
 66  0
         if(message==null) return null;
 67  
         
 68  0
         if (StringUtils.isEmpty(expression))
 69  
         {
 70  0
             return message.getPayload();
 71  
         }
 72  
         else
 73  
         {
 74  
             try
 75  
             {
 76  0
                 if (expression.equals(BYTE_ARRAY))
 77  
                 {
 78  0
                     return message.getPayload(DataType.BYTE_ARRAY_DATA_TYPE);
 79  
                 }
 80  
                 else
 81  
                 {
 82  0
                     return message.getPayload(DataTypeFactory.create(ClassUtils.loadClass(expression, getClass())));
 83  
                 }
 84  
             }
 85  0
             catch (TransformerException e)
 86  
             {
 87  0
                 throw new MuleRuntimeException(CoreMessages.failedToProcessExtractorFunction(expression), e);
 88  
             }
 89  0
             catch (ClassNotFoundException e)
 90  
             {
 91  0
                 throw new MuleRuntimeException(CoreMessages.failedToProcessExtractorFunction(expression), e);
 92  
             }
 93  
         }
 94  
     }
 95  
 
 96  
     /**
 97  
      * {@inheritDoc}
 98  
      */
 99  
     public String getName()
 100  
     {
 101  0
         return NAME;
 102  
     }
 103  
 
 104  
     /**
 105  
      * {@inheritDoc}
 106  
      */
 107  
     public void setName(String name)
 108  
     {
 109  0
         throw new UnsupportedOperationException();
 110  
     }
 111  
 }