Clover coverage report - Code Coverage for tapestry release 4.0-alpha-3
Coverage timestamp: Mon May 16 2005 09:05:49 EDT
file stats: LOC: 100   Methods: 3
NCLOC: 52   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
InjectStateWorker.java - 100% 100% 100%
coverage
 1   
 // Copyright 2005 The Apache Software Foundation
 2   
 //
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 // Licensed under the Apache License, Version 2.0 (the "License");
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 // you may not use this file except in compliance with the License.
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 // You may obtain a copy of the License at
 6   
 //
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 //     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,
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 // 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.
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 15   
 package org.apache.tapestry.enhance;
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 17   
 import java.lang.reflect.Modifier;
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 19   
 import org.apache.hivemind.service.BodyBuilder;
 20   
 import org.apache.hivemind.service.ClassFabUtils;
 21   
 import org.apache.hivemind.service.MethodSignature;
 22   
 import org.apache.tapestry.engine.state.ApplicationStateManager;
 23   
 import org.apache.tapestry.event.PageDetachListener;
 24   
 import org.apache.tapestry.spec.InjectSpecification;
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 26   
 /**
 27   
  * Worker for injecting application state objects as properties of the component. These properties
 28   
  * are read/write and must be "live" (changes are propogated back into the
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  * {@link org.apache.tapestry.engine.state.ApplicationStateManager}). They should also cache in a
 30   
  * local variable for efficiency, and clear out that variable at the end of the request.
 31   
  * 
 32   
  * @author Howard M. Lewis Ship
 33   
  * @since 4.0
 34   
  */
 35   
 public class InjectStateWorker implements InjectEnhancementWorker
 36   
 {
 37   
     private ApplicationStateManager _applicationStateManager;
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 39  1
     public void performEnhancement(EnhancementOperation op, InjectSpecification spec)
 40   
     {
 41  1
         injectState(op, spec.getProperty(), spec.getObject());
 42   
     }
 43   
 
 44  1
     private void injectState(EnhancementOperation op, String propertyName, String objectName)
 45   
     {
 46  1
         Class propertyType = EnhanceUtils.extractPropertyType(op, propertyName, null);
 47  1
         String fieldName = "_$" + propertyName;
 48   
 
 49  1
         op.claimProperty(propertyName);
 50   
 
 51  1
         op.addField(fieldName, propertyType);
 52   
 
 53  1
         String managerField = op.addInjectedField(
 54   
                 "_$applicationStateManager",
 55   
                 _applicationStateManager);
 56   
 
 57  1
         BodyBuilder builder = new BodyBuilder();
 58   
 
 59   
         // Accessor
 60   
 
 61  1
         builder.begin();
 62  1
         builder.addln("if ({0} == null)", fieldName);
 63  1
         builder.addln("  {0} = ({1}) {2}.get(\"{3}\");", new Object[]
 64   
         { fieldName, ClassFabUtils.getJavaClassName(propertyType), managerField, objectName });
 65  1
         builder.addln("return {0};", fieldName);
 66  1
         builder.end();
 67   
 
 68  1
         String methodName = op.getAccessorMethodName(propertyName);
 69   
 
 70  1
         MethodSignature sig = new MethodSignature(propertyType, methodName, null, null);
 71   
 
 72  1
         op.addMethod(Modifier.PUBLIC, sig, builder.toString());
 73   
 
 74   
         // Mutator
 75   
 
 76  1
         builder.clear();
 77  1
         builder.begin();
 78  1
         builder.addln("{0}.store(\"{1}\", $1);", managerField, objectName);
 79  1
         builder.addln("{0} = $1;", fieldName);
 80  1
         builder.end();
 81   
 
 82  1
         sig = new MethodSignature(void.class, EnhanceUtils.createMutatorMethodName(propertyName),
 83   
                 new Class[]
 84   
                 { propertyType }, null);
 85   
 
 86  1
         op.addMethod(Modifier.PUBLIC, sig, builder.toString());
 87   
 
 88   
         // Extend pageDetached() to clean out the cached field value.
 89   
 
 90  1
         op.extendMethodImplementation(
 91   
                 PageDetachListener.class,
 92   
                 EnhanceUtils.PAGE_DETACHED_SIGNATURE,
 93   
                 fieldName + " = null;");
 94   
     }
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 96  1
     public void setApplicationStateManager(ApplicationStateManager applicationStateManager)
 97   
     {
 98  1
         _applicationStateManager = applicationStateManager;
 99   
     }
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 }