Clover coverage report - Code Coverage for hivemind release 1.0-beta-1
Coverage timestamp: Sat Jul 3 2004 09:41:37 EDT
file stats: LOC: 132   Methods: 8
NCLOC: 65   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
PropertyUtils.java 100% 100% 87.5% 96.9%
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.util;
 16   
 import java.beans.BeanInfo;
 17   
 import java.beans.Introspector;
 18   
 import java.util.HashMap;
 19   
 import java.util.Map;
 20   
 
 21   
 import org.apache.hivemind.ApplicationRuntimeException;
 22   
 
 23   
 /**
 24   
  * A collection of static methods used to perform property-level access on arbitrary objects.
 25   
  *
 26   
  * @author Howard Lewis Ship
 27   
  */
 28   
 public class PropertyUtils
 29   
 {
 30   
     private static final Map _classAdaptors = new HashMap();
 31   
 
 32   
     // Prevent instantiation
 33  0
     private PropertyUtils()
 34   
     {
 35   
     }
 36   
 
 37   
     /**
 38   
      * Updates the property of the target object.
 39   
      * 
 40   
      * @param target the object to update
 41   
      * @param propertyName the name of the property to be updated
 42   
      * @param value the value to be stored into the target object property
 43   
      */
 44  3509
     public static void write(Object target, String propertyName, Object value)
 45   
     {
 46  3509
         ClassAdaptor a = getAdaptor(target);
 47   
 
 48  3509
         a.write(target, propertyName, value);
 49   
     }
 50   
 
 51   
     /**
 52   
      * Returns true of the instance contains a writable property of the given type.
 53   
      * 
 54   
      * @param target the object to inspect
 55   
      * @param propertyName the name of the property to check
 56   
      */
 57   
 
 58  1060
     public static boolean isWritable(Object target, String propertyName)
 59   
     {
 60  1060
         return getAdaptor(target).isWritable(propertyName);
 61   
     }
 62   
 
 63  4
     public static boolean isReadable(Object target, String propertyName)
 64   
     {
 65  4
         return getAdaptor(target).isReadable(propertyName);
 66   
     }
 67   
 
 68   
     /**
 69   
      * Updates the property of the target object.
 70   
      * 
 71   
      * @param target the object to update
 72   
      * @param propertyName the name of a property toread
 73   
      */
 74   
 
 75  10
     public static Object read(Object target, String propertyName)
 76   
     {
 77  10
         ClassAdaptor a = getAdaptor(target);
 78   
 
 79  8
         return a.read(target, propertyName);
 80   
     }
 81   
 
 82   
     /**
 83   
      * Returns the type of the named property.
 84   
      * 
 85   
      * @param target the object to examine
 86   
      * @param propertyName the name of the property to check
 87   
      */
 88  3459
     public static Class getPropertyType(Object target, String propertyName)
 89   
     {
 90  3459
         ClassAdaptor a = getAdaptor(target);
 91   
 
 92  3459
         return a.getPropertyType(target, propertyName);
 93   
     }
 94   
 
 95  8042
     private static synchronized ClassAdaptor getAdaptor(Object target)
 96   
     {
 97  8042
         if (target == null)
 98  1
             throw new ApplicationRuntimeException(UtilMessages.nullObject());
 99   
 
 100  8041
         Class targetClass = target.getClass();
 101   
 
 102  8041
         ClassAdaptor result = (ClassAdaptor) _classAdaptors.get(targetClass);
 103   
 
 104  8041
         if (result == null)
 105   
         {
 106  185
             result = buildClassAdaptor(target, targetClass);
 107  184
             _classAdaptors.put(targetClass, result);
 108   
         }
 109   
 
 110  8040
         return result;
 111   
     }
 112   
 
 113  185
     private static ClassAdaptor buildClassAdaptor(Object target, Class targetClass)
 114   
     {
 115  185
         try
 116   
         {
 117  185
             BeanInfo info = Introspector.getBeanInfo(targetClass);
 118   
 
 119  184
             return new ClassAdaptor(info.getPropertyDescriptors());
 120   
         }
 121   
         catch (Exception ex)
 122   
         {
 123  1
             throw new ApplicationRuntimeException(
 124   
                 UtilMessages.unableToIntrospect(targetClass, ex),
 125   
                 target,
 126   
                 null,
 127   
                 ex);
 128   
         }
 129   
     }
 130   
 
 131   
 }
 132