Coverage Report - org.mule.model.resolvers.ReflectionEntryPointResolver
 
Classes in this File Line Coverage Branch Coverage Complexity
ReflectionEntryPointResolver
0%
0/47
0%
0/10
0
 
 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.model.resolvers;
 8  
 
 9  
 import org.mule.api.MuleEventContext;
 10  
 import org.mule.api.model.InvocationResult;
 11  
 import org.mule.routing.filters.WildcardFilter;
 12  
 import org.mule.util.ClassUtils;
 13  
 import org.mule.util.StringMessageUtils;
 14  
 import org.mule.util.StringUtils;
 15  
 
 16  
 import java.lang.reflect.Method;
 17  
 import java.util.Arrays;
 18  
 import java.util.Collections;
 19  
 import java.util.HashSet;
 20  
 import java.util.List;
 21  
 import java.util.Set;
 22  
 
 23  
 /**
 24  
  * <code>ReflectEntryPointResolver</code> is used to determine the entry point on a service
 25  
  * after an event has been received for it. The entrypoint is  discovered using
 26  
  * the event payload type(s) as the argument using reflection. An entry point will try and match for
 27  
  * different argument types, so it's possible to have multiple entry points on a
 28  
  * single service.
 29  
  * <p/>
 30  
  * For multiple parameters the payload of context.getMessage().getPayload() should be an Array of objects.
 31  
  * If the message payload is of type {@link org.mule.transport.NullPayload} the resolver will look for a no-argument
 32  
  * method to call that doesn't match the set of ignoredMethods on the resolver.
 33  
  * <p/>
 34  
  * Also a set of 'ignored' methods are available (and the use can add others) to tell the resolver to not
 35  
  * resolve to these methods. The default ones are:
 36  
  * <ul>
 37  
  * <li>{@link #toString()}
 38  
  * <li>{@link #getClass()}
 39  
  * <li>{@link #notify}
 40  
  * <li>{@link #notifyAll}
 41  
  * <li>{@link #hashCode}
 42  
  * <li>{@link #wait}
 43  
  * <li>{@link java.lang.reflect.Proxy#getInvocationHandler}
 44  
  * <li>'is*'
 45  
  * <li>'get*'.
 46  
  * <li>'set*'.
 47  
  * </ul>
 48  
  * <p/> Note that wildcard expressions can be used.
 49  
  */
 50  
 public class ReflectionEntryPointResolver extends AbstractEntryPointResolver
 51  
 {
 52  
     // we don't want to match these methods when looking for a service method
 53  0
     private Set<String> ignoredMethods = new HashSet<String>(Arrays.asList("equals",
 54  
             "getInvocationHandler", "set*", "toString",
 55  
             "getClass", "notify", "notifyAll", "wait", "hashCode", "clone", "is*", "get*"));
 56  
 
 57  
     protected WildcardFilter filter;
 58  
 
 59  
     public ReflectionEntryPointResolver()
 60  0
     {
 61  0
         updateFilter();
 62  0
     }
 63  
 
 64  
     private void updateFilter()
 65  
     {
 66  0
         filter = new WildcardFilter(StringUtils.join(ignoredMethods, ','));
 67  0
     }
 68  
 
 69  
     /**
 70  
      * Returns an unmodifiable Set of ignoredMethods on this resolver
 71  
      * To add method to the resolver use {@link #addIgnoredMethod(String)}
 72  
      *
 73  
      * @return unmodifiable set of method names set on this resolver
 74  
      */
 75  
     public Set<String> getIgnoredMethods()
 76  
     {
 77  0
         return Collections.unmodifiableSet(ignoredMethods);
 78  
     }
 79  
 
 80  
     public void setIgnoredMethods(Set<String> methods)
 81  
     {
 82  0
         this.ignoredMethods = new HashSet<String>(methods);
 83  0
         updateFilter();
 84  0
     }
 85  
 
 86  
     public void addIgnoredMethod(String name)
 87  
     {
 88  0
         this.ignoredMethods.add(name);
 89  0
         updateFilter();
 90  0
     }
 91  
 
 92  
     public boolean removeIgnoredMethod(String name)
 93  
     {
 94  0
         boolean result = this.ignoredMethods.remove(name);
 95  0
         updateFilter();
 96  0
         return result;
 97  
     }
 98  
 
 99  
     /**
 100  
      * Will discover the entrypoint on the service using the payload type to figure out the method to call.
 101  
      * For multiple parameters the payload of context.getMessage().geTPayload() should be an Array of objects.
 102  
      * If the message payload is of type {@link org.mule.transport.NullPayload} the resolver will look for a no-argument
 103  
      * method to call that doesn't match the set of ignoredMethods on the resover.
 104  
      *
 105  
      * @throws Exception
 106  
      */
 107  
     public InvocationResult invoke(Object component, MuleEventContext context) throws Exception
 108  
     {
 109  0
         Object[] payload = getPayloadFromMessage(context);
 110  
 
 111  
         Method method;
 112  
         InvocationResult result;
 113  
 
 114  0
         method = this.getMethodByArguments(component, payload);
 115  
 
 116  0
         if (method != null)
 117  
         {
 118  0
             return invokeMethod(component, method, payload);
 119  
         }
 120  
 
 121  0
         Class<?>[] types = ClassUtils.getClassTypes(payload);
 122  
 
 123  
         // do any methods on the service accept a context?
 124  0
         List<Method> methods = ClassUtils.getSatisfiableMethods(component.getClass(), types,
 125  
                 isAcceptVoidMethods(), false, ignoredMethods, filter);
 126  
 
 127  0
         int numMethods = methods.size();
 128  0
         if (numMethods > 1)
 129  
         {
 130  0
             result = new InvocationResult(this, InvocationResult.State.FAILED);
 131  
             // too many methods match the context argument
 132  0
             result.setErrorTooManyMatchingMethods(component, types, StringMessageUtils.toString(methods));
 133  0
             return result;
 134  
 
 135  
         }
 136  0
         else if (numMethods == 1)
 137  
         {
 138  
             // found exact match for method with context argument
 139  0
             method = this.addMethodByArguments(component, methods.get(0), payload);
 140  
         }
 141  
         else
 142  
         {
 143  0
             methods = ClassUtils.getSatisfiableMethods(component.getClass(), 
 144  
                 ClassUtils.getClassTypes(payload), true, true, ignoredMethods);
 145  
 
 146  0
             numMethods = methods.size();
 147  
 
 148  0
             if (numMethods > 1)
 149  
             {
 150  0
                 result = new InvocationResult(this, InvocationResult.State.FAILED);
 151  
                 // too many methods match the context argument
 152  0
                 result.setErrorTooManyMatchingMethods(component, types, StringMessageUtils.toString(methods));
 153  0
                 return result;
 154  
             }
 155  0
             else if (numMethods == 1)
 156  
             {
 157  
                 // found exact match for payload argument
 158  0
                 method = this.addMethodByArguments(component, methods.get(0), payload);
 159  
             }
 160  
             else
 161  
             {
 162  0
                 result = new InvocationResult(this, InvocationResult.State.FAILED);
 163  
                 // no method for payload argument either - bail out
 164  0
                 result.setErrorNoMatchingMethods(component, ClassUtils.getClassTypes(payload));
 165  0
                 return result;
 166  
             }
 167  
         }
 168  
 
 169  0
         return invokeMethod(component, method, payload);
 170  
     }
 171  
 
 172  
 
 173  
     @Override
 174  
     public String toString()
 175  
     {
 176  0
         final StringBuffer sb = new StringBuffer();
 177  0
         sb.append("ReflectionEntryPointResolver");
 178  0
         sb.append("{ignoredMethods=").append(StringMessageUtils.toString(ignoredMethods));
 179  0
         sb.append(", acceptVoidMethods=").append(isAcceptVoidMethods());
 180  0
         sb.append('}');
 181  0
         return sb.toString();
 182  
     }
 183  
 }