Clover coverage report - Code Coverage for hivemind-lib release 1.0-rc-2
Coverage timestamp: Sat Sep 11 2004 09:10:14 EDT
file stats: LOC: 137   Methods: 5
NCLOC: 91   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
DefaultImplementationBuilderImpl.java 100% 97% 100% 98.1%
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.lib.impl;
 16   
 
 17   
 import java.lang.reflect.Modifier;
 18   
 import java.util.Collections;
 19   
 import java.util.HashMap;
 20   
 import java.util.Map;
 21   
 
 22   
 import org.apache.hivemind.ApplicationRuntimeException;
 23   
 import org.apache.hivemind.impl.BaseLocatable;
 24   
 import org.apache.hivemind.internal.Module;
 25   
 import org.apache.hivemind.lib.DefaultImplementationBuilder;
 26   
 import org.apache.hivemind.service.ClassFab;
 27   
 import org.apache.hivemind.service.ClassFabUtils;
 28   
 import org.apache.hivemind.service.ClassFactory;
 29   
 import org.apache.hivemind.service.MethodIterator;
 30   
 import org.apache.hivemind.service.MethodSignature;
 31   
 
 32   
 /**
 33   
  * Implemenation of {@link org.apache.hivemind.lib.DefaultImplementationBuilder}.
 34   
  *
 35   
  * @author Howard Lewis Ship
 36   
  */
 37   
 public class DefaultImplementationBuilderImpl
 38   
     extends BaseLocatable
 39   
     implements DefaultImplementationBuilder
 40   
 {
 41   
     private Map _instances = Collections.synchronizedMap(new HashMap());
 42   
 
 43   
     private ClassFactory _classFactory;
 44   
 
 45  10
     public Object buildDefaultImplementation(Class interfaceType, Module module)
 46   
     {
 47  10
         Object result = _instances.get(interfaceType);
 48   
 
 49  10
         if (result == null)
 50   
         {
 51  9
             result = create(interfaceType, module);
 52  8
             _instances.put(interfaceType, result);
 53   
         }
 54   
 
 55  9
         return result;
 56   
     }
 57   
 
 58  9
     private Object create(Class interfaceType, Module module)
 59   
     {
 60  9
         Class defaultClass = createClass(interfaceType, module);
 61   
 
 62  8
         try
 63   
         {
 64  8
             return defaultClass.newInstance();
 65   
         }
 66   
         catch (Exception ex)
 67   
         {
 68  0
             throw new ApplicationRuntimeException(
 69   
                 ImplMessages.unableToCreateDefaultImplementation(interfaceType, ex),
 70   
                 ex);
 71   
         }
 72   
     }
 73   
 
 74  9
     private Class createClass(Class interfaceType, Module module)
 75   
     {
 76  9
         if (!interfaceType.isInterface())
 77  1
             throw new ApplicationRuntimeException(ImplMessages.notAnInterface(interfaceType));
 78   
 
 79  8
         String name = ClassFabUtils.generateClassName("DefaultImpl");
 80   
 
 81  8
         ClassFab cf =
 82   
             _classFactory.newClass(name, Object.class, module.getClassResolver().getClassLoader());
 83   
 
 84  8
         cf.addInterface(interfaceType);
 85   
 
 86  8
         MethodIterator mi = new MethodIterator(interfaceType);
 87   
 
 88  8
         while (mi.hasNext())
 89   
         {
 90  10
             addMethod(cf, mi.next());
 91   
         }
 92   
 
 93  8
         if (!mi.getToString())
 94  7
             ClassFabUtils.addToStringMethod(
 95   
                 cf,
 96   
                 ImplMessages.defaultImplementationDescription(interfaceType));
 97   
 
 98  8
         return cf.createClass();
 99   
     }
 100   
 
 101  10
     private void addMethod(ClassFab cf, MethodSignature m)
 102   
     {
 103  10
         StringBuffer body = new StringBuffer("{ ");
 104   
 
 105  10
         Class returnType = m.getReturnType();
 106   
 
 107  10
         if (returnType != void.class)
 108   
         {
 109  5
             body.append("return");
 110   
 
 111  5
             if (returnType.isPrimitive())
 112   
             {
 113  3
                 if (returnType == boolean.class)
 114  1
                     body.append(" false");
 115   
                 else
 116  2
                     body.append(" 0");
 117   
             }
 118   
             else
 119   
             {
 120  2
                 body.append(" null");
 121   
             }
 122   
 
 123  5
             body.append(";");
 124   
         }
 125   
 
 126  10
         body.append(" }");
 127   
 
 128  10
         cf.addMethod(Modifier.PUBLIC, m, body.toString());
 129   
     }
 130   
 
 131  14
     public void setClassFactory(ClassFactory factory)
 132   
     {
 133  14
         _classFactory = factory;
 134   
     }
 135   
 
 136   
 }
 137