Coverage Report - org.mule.expression.MuleContextExpressionEvaluator
 
Classes in this File Line Coverage Branch Coverage Complexity
MuleContextExpressionEvaluator
0%
0/28
0%
0/20
4.667
 
 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.RequestContext;
 10  
 import org.mule.api.MuleContext;
 11  
 import org.mule.api.MuleEventContext;
 12  
 import org.mule.api.MuleMessage;
 13  
 import org.mule.api.MuleRuntimeException;
 14  
 import org.mule.api.context.MuleContextAware;
 15  
 import org.mule.api.expression.ExpressionEvaluator;
 16  
 import org.mule.api.service.Service;
 17  
 import org.mule.config.i18n.CoreMessages;
 18  
 
 19  
 /**
 20  
  * This property extractor exposes mule context information as expressions. This can be context information about
 21  
  * the server itself such as the server id or about the current request such as the current service name.
 22  
  * <ul>
 23  
  * <li>serviceName - returns the name of the service currently processing the event.</li>
 24  
  * <li>modelName - returns the name of the model that hosts the current service</li>
 25  
  * <li>inboundEndpoint - returns the URI string of the endpoint that received the current messgae.</li>
 26  
  * <li>serverId - the Mule instance server Id.</li>
 27  
  * <li>clusterId - the Mule instance cluster Id.</li>
 28  
  * <li>domainId - the Mule instance domain Id.</li>
 29  
  * <li>workingDir - Mule's working directory.</li>
 30  
  * <li>homeDir - Mule's home directory</li>
 31  
  * </ul>
 32  
  */
 33  0
 public class MuleContextExpressionEvaluator implements ExpressionEvaluator, MuleContextAware
 34  
 {
 35  
     public static final String NAME = "context";
 36  
 
 37  
     protected MuleContext muleContext;
 38  
 
 39  
     public void setMuleContext(MuleContext context)
 40  
     {
 41  0
         this.muleContext = context;
 42  0
     }
 43  
 
 44  
     /**
 45  
      * Extracts a single property from the message
 46  
      *
 47  
      * @param expression the property expression or expression
 48  
      * @param message    the message to extract from
 49  
      * @return the result of the extraction or null if the property was not found
 50  
      */
 51  
     public Object evaluate(String expression, MuleMessage message)
 52  
     {
 53  0
         if (expression.equals("serviceName"))
 54  
         {
 55  0
             return getEventContext().getFlowConstruct().getName();
 56  
         }
 57  0
         else if (expression.equals("modelName"))
 58  
         {
 59  0
             if (getEventContext().getFlowConstruct() instanceof Service)
 60  
             {
 61  0
                 return ((Service) getEventContext().getFlowConstruct()).getModel().getName();
 62  
             }
 63  
             else
 64  
             {
 65  0
                 throw new UnsupportedOperationException("The 'modelName' function can only be used with Service");
 66  
             }
 67  
         }
 68  0
         else if (expression.equals("inboundEndpoint"))
 69  
         {
 70  0
             return getEventContext().getEndpointURI();
 71  
         }
 72  0
         else if (expression.equals("serverId"))
 73  
         {
 74  0
             return getMuleContext().getConfiguration().getId();
 75  
         }
 76  0
         else if (expression.equals("clusterId"))
 77  
         {
 78  0
             return getMuleContext().getConfiguration().getClusterId();
 79  
         }
 80  0
         else if (expression.equals("domainId"))
 81  
         {
 82  0
             return getMuleContext().getConfiguration().getDomainId();
 83  
         }
 84  0
         else if (expression.equals("workingDir"))
 85  
         {
 86  0
             return getMuleContext().getConfiguration().getWorkingDirectory();
 87  
         }
 88  0
         else if (expression.equals("homeDir"))
 89  
         {
 90  0
             return getMuleContext().getConfiguration().getMuleHomeDirectory();
 91  
         }
 92  
         else
 93  
         {
 94  0
             throw new IllegalArgumentException(expression);
 95  
         }
 96  
     }
 97  
 
 98  
     protected MuleContext getMuleContext()
 99  
     {
 100  0
         return muleContext;
 101  
     }
 102  
 
 103  
     protected MuleEventContext getEventContext()
 104  
     {
 105  0
         if(RequestContext.getEventContext()==null)
 106  
         {
 107  0
              throw new MuleRuntimeException(CoreMessages.objectIsNull("MuleEventContext"));
 108  
         }
 109  
         else
 110  
         {
 111  0
             return RequestContext.getEventContext();
 112  
         }
 113  
     }
 114  
 
 115  
     /**
 116  
      * Gts the name of the object
 117  
      *
 118  
      * @return the name of the object
 119  
      */
 120  
     public String getName()
 121  
     {
 122  0
         return NAME;
 123  
     }
 124  
 
 125  
     /**
 126  
      * Sets the name of the object
 127  
      *
 128  
      * @param name the name of the object
 129  
      */
 130  
     public void setName(String name)
 131  
     {
 132  0
         throw new UnsupportedOperationException();
 133  
     }
 134  
 }