Clover coverage report - Code Coverage for hivemind release 1.0-beta-2
Coverage timestamp: Sun Aug 1 2004 14:03:45 EDT
file stats: LOC: 118   Methods: 7
NCLOC: 62   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
InvokeParentRule.java 87.5% 100% 100% 97.1%
coverage coverage
 1   
 //  Copyright 2004 The Apache Software Foundation
 2   
 //
 3   
 // Licensed under the Apache License, Version 2.0 (the "License");
 4   
 // you may not use this file except in compliance with the License.
 5   
 // You may obtain a copy of the License at
 6   
 //
 7   
 //     http://www.apache.org/licenses/LICENSE-2.0
 8   
 //
 9   
 // Unless required by applicable law or agreed to in writing, software
 10   
 // distributed under the License is distributed on an "AS IS" BASIS,
 11   
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12   
 // See the License for the specific language governing permissions and
 13   
 // limitations under the License.
 14   
 
 15   
 package org.apache.hivemind.schema.rules;
 16   
 
 17   
 import java.lang.reflect.Method;
 18   
 
 19   
 import org.apache.hivemind.ApplicationRuntimeException;
 20   
 import org.apache.hivemind.Element;
 21   
 import org.apache.hivemind.schema.SchemaProcessor;
 22   
 
 23   
 /**
 24   
  * Rule used to connect a child object to its parent by invoking a method
 25   
  * on the parent, passing the child.  The child object is the top object
 26   
  * on the stack and the parent object is the next object down on the stack.
 27   
  * Created from the <code>&lt;invoke-parent&gt;</code>
 28   
  * element.  Generally, this is the last rule in a sequence of rules.
 29   
  *
 30   
  * @author Howard Lewis Ship
 31   
  */
 32   
 public class InvokeParentRule extends BaseRule
 33   
 {
 34   
     private String _methodName;
 35   
     private int _depth = 1;
 36   
 
 37  2559
     public InvokeParentRule()
 38   
     {
 39   
 
 40   
     }
 41   
 
 42  426
     public InvokeParentRule(String methodName)
 43   
     {
 44  426
         _methodName = methodName;
 45   
     }
 46   
 
 47   
     /**
 48   
      * Invokes the named method on the parent object (using reflection).
 49   
      */
 50  2996
     public void begin(SchemaProcessor processor, Element element)
 51   
     {
 52  2996
         Object child = processor.peek();
 53  2996
         Object parent = processor.peek(_depth);
 54   
 
 55  2996
         try
 56   
         {
 57  2996
             Method m = findMethod(parent, _methodName, child.getClass());
 58   
 
 59  2995
             m.invoke(parent, new Object[] { child });
 60   
         }
 61   
         catch (Exception ex)
 62   
         {
 63  1
             throw new ApplicationRuntimeException(
 64   
                 RulesMessages.errorInvokingMethod(_methodName, parent, getLocation(), ex),
 65   
                 getLocation(),
 66   
                 ex);
 67   
         }
 68   
     }
 69   
 
 70  2
     public String getMethodName()
 71   
     {
 72  2
         return _methodName;
 73   
     }
 74   
 
 75  2559
     public void setMethodName(String string)
 76   
     {
 77  2559
         _methodName = string;
 78   
     }
 79   
 
 80   
     /**
 81   
      * Sets the depth of the parent object. The default is 1.
 82   
      */
 83  1992
     public void setDepth(int i)
 84   
     {
 85  1992
         _depth = i;
 86   
     }
 87   
 
 88   
     /** 
 89   
      * Searches for the *first* public method the has the right name, and takes a
 90   
      * single parameter that is compatible with the parameter type.
 91   
      * 
 92   
      * @throws NoSuchMethodException if a method can't be found 
 93   
      */
 94  2996
     private Method findMethod(Object target, String name, Class parameterType)
 95   
         throws NoSuchMethodException
 96   
     {
 97  2996
         Method[] methods = target.getClass().getMethods();
 98   
 
 99  2996
         for (int i = 0; i < methods.length; i++)
 100   
         {
 101  9798
             Method m = methods[i];
 102   
 
 103  9798
             if (m.getParameterTypes().length != 1)
 104  4107
                 continue;
 105   
 
 106  5691
             if (!m.getName().equals(name))
 107  2696
                 continue;
 108   
 
 109  2995
             if (m.getParameterTypes()[0].isAssignableFrom(parameterType))
 110  2995
                 return m;
 111   
 
 112   
         }
 113   
 
 114  1
         throw new NoSuchMethodException(name);
 115   
     }
 116   
 
 117   
 }
 118