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: 149   Methods: 10
NCLOC: 100   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
ExpressionEvaluatorImpl.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.tapestry.services.impl;
 16   
 
 17   
 import java.util.Iterator;
 18   
 import java.util.List;
 19   
 import java.util.Map;
 20   
 
 21   
 import ognl.ClassResolver;
 22   
 import ognl.Ognl;
 23   
 import ognl.OgnlRuntime;
 24   
 import ognl.TypeConverter;
 25   
 
 26   
 import org.apache.hivemind.ApplicationRuntimeException;
 27   
 import org.apache.tapestry.Tapestry;
 28   
 import org.apache.tapestry.services.ExpressionCache;
 29   
 import org.apache.tapestry.services.ExpressionEvaluator;
 30   
 import org.apache.tapestry.spec.IApplicationSpecification;
 31   
 
 32   
 /**
 33   
  * @author Howard M. Lewis Ship
 34   
  * @since 4.0
 35   
  */
 36   
 public class ExpressionEvaluatorImpl implements ExpressionEvaluator
 37   
 {
 38   
     // Uses Thread's context class loader
 39   
 
 40   
     private ClassResolver _ognlResolver = new OgnlClassResolver();
 41   
 
 42   
     private ExpressionCache _expressionCache;
 43   
 
 44   
     private IApplicationSpecification _applicationSpecification;
 45   
 
 46   
     private TypeConverter _typeConverter;
 47   
 
 48   
     private List _contributions;
 49   
 
 50  45
     public void setApplicationSpecification(IApplicationSpecification applicationSpecification)
 51   
     {
 52  45
         _applicationSpecification = applicationSpecification;
 53   
     }
 54   
 
 55  45
     public void initializeService()
 56   
     {
 57  45
         if (_applicationSpecification.checkExtension(Tapestry.OGNL_TYPE_CONVERTER))
 58  1
             _typeConverter = (TypeConverter) _applicationSpecification.getExtension(
 59   
                     Tapestry.OGNL_TYPE_CONVERTER,
 60   
                     TypeConverter.class);
 61   
 
 62  45
         Iterator i = _contributions.iterator();
 63   
 
 64  45
         while (i.hasNext())
 65   
         {
 66  88
             PropertyAccessorContribution c = (PropertyAccessorContribution) i.next();
 67   
 
 68  88
             OgnlRuntime.setPropertyAccessor(c.getSubjectClass(), c.getAccessor());
 69   
         }
 70   
 
 71   
     }
 72   
 
 73  48
     public Object read(Object target, String expression)
 74   
     {
 75  48
         return readCompiled(target, _expressionCache.getCompiledExpression(expression));
 76   
     }
 77   
 
 78  2449
     public Object readCompiled(Object target, Object expression)
 79   
     {
 80  2449
         try
 81   
         {
 82  2449
             Map context = createContext(target);
 83   
 
 84  2449
             return Ognl.getValue(expression, context, target);
 85   
         }
 86   
         catch (Exception ex)
 87   
         {
 88  2
             throw new ApplicationRuntimeException(ImplMessages.unableToReadExpression(ImplMessages
 89   
                     .parsedExpression(), target, ex), target, null, ex);
 90   
         }
 91   
     }
 92   
 
 93  3885
     private Map createContext(Object target)
 94   
     {
 95  3885
         Map result = Ognl.createDefaultContext(target, _ognlResolver);
 96   
 
 97  3885
         if (_typeConverter != null)
 98  1
             Ognl.setTypeConverter(result, _typeConverter);
 99   
 
 100  3885
         return result;
 101   
     }
 102   
 
 103  3
     public void write(Object target, String expression, Object value)
 104   
     {
 105  3
         writeCompiled(target, _expressionCache.getCompiledExpression(expression), value);
 106   
     }
 107   
 
 108  1436
     public void writeCompiled(Object target, Object expression, Object value)
 109   
     {
 110  1436
         try
 111   
         {
 112  1436
             Map context = createContext(target);
 113   
 
 114  1436
             Ognl.setValue(expression, context, target, value);
 115   
         }
 116   
         catch (Exception ex)
 117   
         {
 118  1
             throw new ApplicationRuntimeException(ImplMessages.unableToWriteExpression(ImplMessages
 119   
                     .parsedExpression(), target, value, ex), target, null, ex);
 120   
         }
 121   
 
 122   
     }
 123   
 
 124  959
     public boolean isConstant(String expression)
 125   
     {
 126  959
         Object compiled = _expressionCache.getCompiledExpression(expression);
 127   
 
 128  959
         try
 129   
         {
 130  959
             return Ognl.isConstant(compiled);
 131   
         }
 132   
         catch (Exception ex)
 133   
         {
 134  1
             throw new ApplicationRuntimeException(ImplMessages.isConstantExpressionError(
 135   
                     expression,
 136   
                     ex), ex);
 137   
         }
 138   
     }
 139   
 
 140  68
     public void setExpressionCache(ExpressionCache expressionCache)
 141   
     {
 142  68
         _expressionCache = expressionCache;
 143   
     }
 144   
 
 145  45
     public void setContributions(List contributions)
 146   
     {
 147  45
         _contributions = contributions;
 148   
     }
 149   
 }