Coverage Report - org.apache.tapestry.enhance.ComponentConstructorImpl
 
Classes in this File Line Coverage Branch Coverage Complexity
ComponentConstructorImpl
0%
0/13
N/A
2
 
 1  
 // Copyright 2004, 2005 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.tapestry.enhance;
 16  
 
 17  
 import java.lang.reflect.Constructor;
 18  
 
 19  
 import org.apache.hivemind.ApplicationRuntimeException;
 20  
 import org.apache.hivemind.Location;
 21  
 import org.apache.hivemind.util.Defense;
 22  
 import org.apache.tapestry.services.ComponentConstructor;
 23  
 
 24  
 /**
 25  
  * @author Howard M. Lewis Ship
 26  
  * @since 4.0
 27  
  */
 28  
 public class ComponentConstructorImpl implements ComponentConstructor
 29  
 {
 30  
     private Location _location;
 31  
 
 32  
     private Constructor _constructor;
 33  
 
 34  
     private Object[] _parameters;
 35  
 
 36  
     private String _classFabString;
 37  
 
 38  
     /**
 39  
      * News instance of this class.
 40  
      * 
 41  
      * @param constructor
 42  
      *            the constructor method to invoke
 43  
      * @param parameters
 44  
      *            the parameters to pass to the constructor. These are retained, not copied.
 45  
      * @param classFabString
 46  
      *            a string representing the generated class information, used for exception
 47  
      *            reporting
 48  
      * @param location
 49  
      *            the location, used for exception reporting
 50  
      */
 51  
 
 52  
     public ComponentConstructorImpl(Constructor constructor, Object[] parameters,
 53  
             String classFabString, Location location)
 54  0
     {
 55  0
         Defense.notNull(constructor, "constructor");
 56  0
         _constructor = constructor;
 57  0
         _parameters = parameters;
 58  0
         _classFabString = classFabString;
 59  0
         _location = location;
 60  0
     }
 61  
 
 62  
     public Class getComponentClass()
 63  
     {
 64  0
         return _constructor.getDeclaringClass();
 65  
     }
 66  
 
 67  
     public Object newInstance()
 68  
     {
 69  
         try
 70  
         {
 71  0
             Object result = _constructor.newInstance(_parameters);
 72  
 
 73  
             // Unlikely to generate an error if we can get through it once, so it's
 74  
             // safe to release the big classFabString
 75  
 
 76  0
             _classFabString = null;
 77  
 
 78  0
             return result;
 79  
         }
 80  0
         catch (Throwable ex)
 81  
         {
 82  0
             throw new ApplicationRuntimeException(EnhanceMessages.instantiationFailure(
 83  
                     _constructor,
 84  
                     _parameters,
 85  
                     _classFabString,
 86  
                     ex), null, _location, ex);
 87  
         }
 88  
     }
 89  
 
 90  
 }