Coverage Report - org.mule.model.resolvers.AbstractEntryPointResolver
 
Classes in this File Line Coverage Branch Coverage Complexity
AbstractEntryPointResolver
82%
42/51
70%
14/20
1.75
 
 1  
 /*
 2  
  * $Id: AbstractEntryPointResolver.java 12242 2008-07-07 13:35:38Z dirk.olmes $
 3  
  * --------------------------------------------------------------------------------------
 4  
  * Copyright (c) MuleSource, Inc.  All rights reserved.  http://www.mulesource.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  
 package org.mule.model.resolvers;
 11  
 
 12  
 import org.mule.VoidResult;
 13  
 import org.mule.api.MuleEventContext;
 14  
 import org.mule.api.model.EntryPointResolver;
 15  
 import org.mule.api.model.InvocationResult;
 16  
 import org.mule.api.transformer.TransformerException;
 17  
 import org.mule.transport.NullPayload;
 18  
 import org.mule.util.ClassUtils;
 19  
 import org.mule.util.StringMessageUtils;
 20  
 
 21  
 import java.lang.reflect.InvocationTargetException;
 22  
 import java.lang.reflect.Method;
 23  
 
 24  
 import edu.emory.mathcs.backport.java.util.concurrent.ConcurrentHashMap;
 25  
 
 26  
 import org.apache.commons.logging.Log;
 27  
 import org.apache.commons.logging.LogFactory;
 28  
 
 29  
 /**
 30  
  * A Base class for {@link org.mule.api.model.EntryPointResolver}. It provides parameters for
 31  
  * detemining if the payload of the message should be transformed first and whether void methods are
 32  
  * acceptible. It also provides a method cashe for those resolvers that use reflection to discover methods
 33  
  * on the service.
 34  
  */
 35  260
 public abstract class AbstractEntryPointResolver implements EntryPointResolver
 36  
 {
 37  
     /** logger used by this class */
 38  260
     protected transient final Log logger = LogFactory.getLog(getClass());
 39  
 
 40  260
     private boolean transformFirst = true;
 41  
 
 42  260
     private boolean acceptVoidMethods = false;
 43  
 
 44  
 
 45  
     // @GuardedBy(itself)
 46  260
     protected final ConcurrentHashMap methodCache = new ConcurrentHashMap(4);
 47  
 
 48  
     public boolean isTransformFirst()
 49  
     {
 50  132
         return transformFirst;
 51  
     }
 52  
 
 53  
     public void setTransformFirst(boolean transformFirst)
 54  
     {
 55  68
         this.transformFirst = transformFirst;
 56  68
     }
 57  
 
 58  
     public boolean isAcceptVoidMethods()
 59  
     {
 60  106
         return acceptVoidMethods;
 61  
     }
 62  
 
 63  
     public void setAcceptVoidMethods(boolean acceptVoidMethods)
 64  
     {
 65  22
         this.acceptVoidMethods = acceptVoidMethods;
 66  22
     }
 67  
 
 68  
     protected Method getMethodByName(String methodName, MuleEventContext context)
 69  
     {
 70  34
         StringBuffer key = new StringBuffer(24).append(context.getService().getName())
 71  
                 .append(".").append(methodName);
 72  34
         Method method = (Method) methodCache.get(key.toString());
 73  34
         return method;
 74  
     }
 75  
 
 76  
     protected Method addMethodByName(Method method, MuleEventContext context)
 77  
     {
 78  18
         StringBuffer key = new StringBuffer(24).append(context.getService().getName())
 79  
                 .append(".").append(method.getName());
 80  18
         Method previousMethod = (Method) methodCache.putIfAbsent(key.toString(), method);
 81  18
         return (previousMethod != null ? previousMethod : method);
 82  
     }
 83  
 
 84  
     protected Method addMethodByArguments(Object component, Method method, Object[] payload)
 85  
     {
 86  32
         Method previousMethod = (Method) methodCache.putIfAbsent(getCacheKeyForPayload(component, payload), method);
 87  32
         return (previousMethod != null ? previousMethod : method);
 88  
     }
 89  
 
 90  
 
 91  
     protected Method getMethodByArguments(Object component, Object[] payload)
 92  
     {
 93  48
         Method method = (Method) methodCache.get(getCacheKeyForPayload(component, payload));
 94  48
         return method;
 95  
     }
 96  
 
 97  
     protected String getCacheKeyForPayload(Object component, Object[] payload)
 98  
     {
 99  80
         StringBuffer key = new StringBuffer(48);
 100  170
         for (int i = 0; i < payload.length; i++)
 101  
         {
 102  90
             Object o = payload[i];
 103  90
             key.append(o.getClass().getName());
 104  
         }
 105  80
         key.append(".").append(ClassUtils.getClassName(component.getClass()));
 106  80
         return key.toString();
 107  
     }
 108  
 
 109  
 
 110  
     protected Object[] getPayloadFromMessage(MuleEventContext context) throws TransformerException
 111  
     {
 112  
         Object temp;
 113  72
         if (isTransformFirst())
 114  
         {
 115  64
             temp = context.transformMessage();
 116  
         }
 117  
         else
 118  
         {
 119  8
             temp = context.getMessage().getPayload();
 120  
         }
 121  72
         if (temp instanceof Object[])
 122  
         {
 123  20
             return (Object[]) temp;
 124  
         }
 125  52
         else if (temp instanceof NullPayload)
 126  
         {
 127  6
             return ClassUtils.NO_ARGS;
 128  
         }
 129  
         else
 130  
         {
 131  46
             return new Object[]{temp};
 132  
         }
 133  
     }
 134  
 
 135  
     protected InvocationResult invokeMethod(Object component, Method method, Object[] arguments)
 136  
             throws InvocationTargetException, IllegalAccessException
 137  
     {
 138  48
         String methodCall = null;
 139  
 
 140  48
         if (logger.isDebugEnabled())
 141  
         {
 142  0
             methodCall = component.getClass().getName() + "." + method.getName() + "("
 143  
                     + StringMessageUtils.toString(ClassUtils.getClassTypes(arguments)) + ")";
 144  0
             logger.debug("Invoking " + methodCall);
 145  
         }
 146  
 
 147  48
         Object result = method.invoke(component, arguments);
 148  48
         if (method.getReturnType().equals(Void.TYPE))
 149  
         {
 150  38
             result = VoidResult.getInstance();
 151  
         }
 152  
 
 153  48
         if (logger.isDebugEnabled())
 154  
         {
 155  0
             logger.debug("Result of call " + methodCall + " is " + (result == null ? "null" : "not null"));
 156  
         }
 157  
 
 158  48
         return new InvocationResult(result, method);
 159  
     }
 160  
 
 161  
 
 162  
     public String toString()
 163  
     {
 164  0
         final StringBuffer sb = new StringBuffer();
 165  0
         sb.append("AbstractEntryPointResolver");
 166  0
         sb.append("{transformFirst=").append(transformFirst);
 167  0
         sb.append(", acceptVoidMethods=").append(acceptVoidMethods);
 168  0
         sb.append('}');
 169  0
         return sb.toString();
 170  
     }
 171  
 }