Coverage Report - org.mule.expression.MapPayloadExpressionEvaluator
 
Classes in this File Line Coverage Branch Coverage Complexity
MapPayloadExpressionEvaluator
0%
0/27
0%
0/16
0
 
 1  
 /*
 2  
  * $Id: MapPayloadExpressionEvaluator.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  
 
 11  
 package org.mule.expression;
 12  
 
 13  
 import org.mule.api.MuleMessage;
 14  
 import org.mule.api.expression.ExpressionEvaluator;
 15  
 import org.mule.api.expression.RequiredValueException;
 16  
 import org.mule.config.i18n.CoreMessages;
 17  
 import org.mule.util.StringUtils;
 18  
 
 19  
 import java.util.HashMap;
 20  
 import java.util.Map;
 21  
 
 22  
 import static org.mule.expression.ExpressionConstants.DELIM;
 23  
 import static org.mule.expression.ExpressionConstants.OPTIONAL_ARGUMENT;
 24  
 
 25  
 /**
 26  
  * If the message payload is a map this extractor will look up the property value in
 27  
  * the map
 28  
  */
 29  0
 public class MapPayloadExpressionEvaluator implements ExpressionEvaluator
 30  
 {
 31  
     public static final String NAME = "map-payload";
 32  
 
 33  
     public Object evaluate(String expression, MuleMessage message)
 34  
     {
 35  0
         Object payload = message.getPayload();
 36  
 
 37  0
         if (!(payload instanceof Map))
 38  
         {
 39  0
             return null;
 40  
         }
 41  
         
 42  0
         if (expression.indexOf(DELIM) > -1)
 43  
         {
 44  
 
 45  0
             String[] strings = StringUtils.splitAndTrim(expression, DELIM);
 46  0
             Map<String, Object> result = new HashMap<String, Object>(strings.length);
 47  
 
 48  0
             for (String s : strings)
 49  
             {
 50  0
                 Object val = getValue(s, (Map) payload);
 51  0
                 if (val != null)
 52  
                 {
 53  0
                     if (s.endsWith(OPTIONAL_ARGUMENT))
 54  
                     {
 55  0
                         s = s.substring(0, s.length() - OPTIONAL_ARGUMENT.length());
 56  
                     }
 57  0
                     result.put(s, val);
 58  
                 }
 59  
             }
 60  0
             return result;
 61  
         }
 62  
         else
 63  
         {
 64  0
             return getValue(expression, (Map)payload);
 65  
         }
 66  
     }
 67  
 
 68  
     protected Object getValue(String key, Map map)
 69  
     {
 70  
         boolean required;
 71  0
         if (key.endsWith(OPTIONAL_ARGUMENT))
 72  
         {
 73  0
             key = key.substring(0, key.length() - OPTIONAL_ARGUMENT.length());
 74  0
             required = false;
 75  
         }
 76  
         else
 77  
         {
 78  0
             required = true;
 79  
         }
 80  0
         Object val = map.get(key);
 81  0
         if (val != null)
 82  
         {
 83  0
             return val;
 84  
         }
 85  0
         else if (required)
 86  
         {
 87  0
             throw new RequiredValueException(CoreMessages.expressionEvaluatorReturnedNull(NAME, key));
 88  
         }
 89  0
         return null;
 90  
     }
 91  
 
 92  
     /**
 93  
      * {@inheritDoc}
 94  
      */
 95  
     public String getName()
 96  
     {
 97  0
         return NAME;
 98  
     }
 99  
 
 100  
     /**
 101  
      * {@inheritDoc}
 102  
      */
 103  
     public void setName(String name)
 104  
     {
 105  0
         throw new UnsupportedOperationException();
 106  
     }
 107  
 
 108  
 }