Coverage Report - org.apache.tapestry.services.impl.ExtensionLookupFactory
 
Classes in this File Line Coverage Branch Coverage Complexity
ExtensionLookupFactory
0%
0/15
0%
0/4
3.333
 
 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.services.impl;
 16  
 
 17  
 import org.apache.hivemind.ApplicationRuntimeException;
 18  
 import org.apache.hivemind.ServiceImplementationFactory;
 19  
 import org.apache.hivemind.ServiceImplementationFactoryParameters;
 20  
 import org.apache.hivemind.lib.DefaultImplementationBuilder;
 21  
 import org.apache.tapestry.spec.IApplicationSpecification;
 22  
 
 23  
 /**
 24  
  * An implementation of {@link org.apache.hivemind.ServiceImplementationFactory}that looks for a
 25  
  * service implementation provided as an
 26  
  * {@link org.apache.tapestry.spec.ILibrarySpecification#getExtension(String) application
 27  
  * extension}. If no such extension exists, then a
 28  
  * {@link org.apache.hivemind.lib.DefaultImplementationBuilder default implementation}is
 29  
  * constructed and returned instead. This allows compatibility with Tapestry 3.0 and earlier
 30  
  * application extensions (though those will be phased out in the future).
 31  
  * 
 32  
  * @author Howard Lewis Ship
 33  
  * @since 4.0
 34  
  */
 35  0
 public class ExtensionLookupFactory implements ServiceImplementationFactory
 36  
 {
 37  
     private IApplicationSpecification _specification;
 38  
 
 39  
     private DefaultImplementationBuilder _defaultBuilder;
 40  
 
 41  
     public Object createCoreServiceImplementation(
 42  
             ServiceImplementationFactoryParameters factorParameters)
 43  
     {
 44  0
         ExtensionLookupParameter p = (ExtensionLookupParameter) factorParameters.getParameters()
 45  
                 .get(0);
 46  
 
 47  0
         String extensionName = p.getExtensionName();
 48  
 
 49  0
         Class serviceInterface = factorParameters.getServiceInterface();
 50  
 
 51  
         try
 52  
         {
 53  0
             if (_specification.checkExtension(extensionName))
 54  0
                 return _specification.getExtension(extensionName, serviceInterface);
 55  
 
 56  0
             if (p.getDefault() != null)
 57  0
                 return p.getDefault();
 58  
 
 59  0
             return _defaultBuilder.buildDefaultImplementation(serviceInterface);
 60  
         }
 61  0
         catch (Exception ex)
 62  
         {
 63  0
             throw new ApplicationRuntimeException(ex.getMessage(), p.getLocation(), ex);
 64  
         }
 65  
     }
 66  
 
 67  
     public void setDefaultBuilder(DefaultImplementationBuilder builder)
 68  
     {
 69  0
         _defaultBuilder = builder;
 70  0
     }
 71  
 
 72  
     public void setSpecification(IApplicationSpecification specification)
 73  
     {
 74  0
         _specification = specification;
 75  0
     }
 76  
 
 77  
 }