Clover coverage report - Code Coverage for hivemind release 1.1-beta-1
Coverage timestamp: Thu Apr 28 2005 19:53:41 EDT
file stats: LOC: 147   Methods: 5
NCLOC: 76   Classes: 1
30 day Evaluation Version distributed via the Maven Jar Repository. Clover is not free. You have 30 days to evaluate it. Please visit http://www.thecortex.net/clover to obtain a licensed version of Clover
 
 Source file Conditionals Statements Methods TOTAL
ProxyBuilder.java 100% 100% 100% 100%
coverage
 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.hivemind.impl;
 16   
 
 17   
 import java.io.Serializable;
 18   
 import java.lang.reflect.Modifier;
 19   
 
 20   
 import org.apache.hivemind.internal.Module;
 21   
 import org.apache.hivemind.internal.ServicePoint;
 22   
 import org.apache.hivemind.internal.ser.ServiceSerializationHelper;
 23   
 import org.apache.hivemind.service.BodyBuilder;
 24   
 import org.apache.hivemind.service.ClassFab;
 25   
 import org.apache.hivemind.service.ClassFabUtils;
 26   
 import org.apache.hivemind.service.ClassFactory;
 27   
 import org.apache.hivemind.service.MethodIterator;
 28   
 import org.apache.hivemind.service.MethodSignature;
 29   
 
 30   
 /**
 31   
  * Class used to assist service extension points in creating proxies.
 32   
  * 
 33   
  * @author Howard Lewis Ship
 34   
  */
 35   
 public final class ProxyBuilder
 36   
 {
 37   
     private ServicePoint _point;
 38   
 
 39   
     private Class _serviceInterface;
 40   
 
 41   
     private ClassFab _classFab;
 42   
 
 43   
     private String _type;
 44   
 
 45  967
     public ProxyBuilder(String type, ServicePoint point)
 46   
     {
 47  967
         this(type, point, false);
 48   
     }
 49   
 
 50   
     /**
 51   
      * Constructs a new builder. The type will be incorporated into value returned by the
 52   
      * <code>toString()</code> method. The service extension point is used to identify the service
 53   
      * interface and service id.
 54   
      * 
 55   
      * @param type
 56   
      *            used as part of the <code>toString()</code> method's return value
 57   
      * @param point
 58   
      *            the service point for which this proxy is being constructed
 59   
      * @param outerProxy
 60   
      *            if false, then the proxy can extend the service points service interface always.
 61   
      *            If true and the service point's declared interface is actually a bean class (not
 62   
      *            an interface), then the proxy will be a subclass of that bean.
 63   
      */
 64  1928
     public ProxyBuilder(String type, ServicePoint point, boolean outerProxy)
 65   
     {
 66  1928
         _point = point;
 67  1928
         _type = type;
 68  1928
         _serviceInterface = point.getServiceInterface();
 69   
 
 70  1928
         Class declaredInterface = point.getDeclaredInterface();
 71   
 
 72  1928
         Module module = point.getModule();
 73  1928
         ClassFactory factory = (ClassFactory) module.getService(
 74   
                 "hivemind.ClassFactory",
 75   
                 ClassFactory.class);
 76   
 
 77  1928
         boolean extendBeanClass = outerProxy && !declaredInterface.isInterface();
 78  1928
         Class baseClass = extendBeanClass ? declaredInterface : Object.class;
 79   
 
 80  1928
         _classFab = factory.newClass(ClassFabUtils.generateClassName(_serviceInterface), baseClass);
 81   
 
 82  1928
         if (!extendBeanClass)
 83  1922
             _classFab.addInterface(_serviceInterface);
 84   
 
 85   
         // Not exactly certain this will work with non-interface beans that already
 86   
         // are serializable!
 87   
 
 88  1928
         if (outerProxy)
 89  961
             addSerializable(point.getExtensionPointId());
 90   
     }
 91   
 
 92   
     /** @since 1.1 */
 93  961
     private void addSerializable(String pointId)
 94   
     {
 95  961
         _classFab.addInterface(Serializable.class);
 96   
 
 97  961
         BodyBuilder bb = new BodyBuilder();
 98   
 
 99  961
         bb.add(
 100   
                 "return {0}.getServiceSerializationSupport().getServiceTokenForService(\"{1}\");",
 101   
                 ServiceSerializationHelper.class.getName(),
 102   
                 pointId);
 103   
 
 104  961
         MethodSignature sig = new MethodSignature(Object.class, "writeReplace", null, null);
 105   
 
 106  961
         _classFab.addMethod(Modifier.PRIVATE, sig, bb.toString());
 107   
     }
 108   
 
 109  1928
     public ClassFab getClassFab()
 110   
     {
 111  1928
         return _classFab;
 112   
     }
 113   
 
 114   
     /**
 115   
      * Creates the service methods for the class.
 116   
      * 
 117   
      * @param indirection
 118   
      *            the name of a variable, or a method invocation snippet, used to redirect the
 119   
      *            invocation on the proxy to the actual service implementation.
 120   
      */
 121  1928
     public void addServiceMethods(String indirection)
 122   
     {
 123  1928
         BodyBuilder builder = new BodyBuilder();
 124   
 
 125  1928
         MethodIterator mi = new MethodIterator(_serviceInterface);
 126   
 
 127  1928
         while (mi.hasNext())
 128   
         {
 129  2261
             MethodSignature m = mi.next();
 130   
 
 131  2261
             builder.clear();
 132  2261
             builder.begin();
 133  2261
             builder.add("return ($r) ");
 134  2261
             builder.add(indirection);
 135  2261
             builder.add(".");
 136  2261
             builder.add(m.getName());
 137  2261
             builder.addln("($$);");
 138  2261
             builder.end();
 139   
 
 140  2261
             _classFab.addMethod(Modifier.PUBLIC, m, builder.toString());
 141   
         }
 142   
 
 143  1928
         if (!mi.getToString())
 144  1926
             ClassFabUtils.addToStringMethod(_classFab, "<" + _type + " for "
 145   
                     + _point.getExtensionPointId() + "(" + _serviceInterface.getName() + ")>");
 146   
     }
 147   
 }