Coverage Report - org.apache.tapestry.record.ChangeKey
 
Classes in this File Line Coverage Branch Coverage Complexity
ChangeKey
0%
0/22
0%
0/20
2.833
 
 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.record;
 16  
 
 17  
 import org.apache.hivemind.util.Defense;
 18  
 
 19  
 /**
 20  
  * Used to identify a property change.
 21  
  * 
 22  
  * @author Howard Lewis Ship
 23  
  */
 24  
 
 25  
 public class ChangeKey
 26  
 {
 27  0
     private int _hashCode = -1;
 28  
 
 29  
     private String _componentPath;
 30  
 
 31  
     private String _propertyName;
 32  
 
 33  
     public ChangeKey(String componentPath, String propertyName)
 34  0
     {
 35  0
         Defense.notNull(propertyName, "propertyName");
 36  
 
 37  0
         _componentPath = componentPath;
 38  0
         _propertyName = propertyName;
 39  0
     }
 40  
 
 41  
     public boolean equals(Object object)
 42  
     {
 43  0
         if (object == null)
 44  0
             return false;
 45  
 
 46  0
         if (this == object)
 47  0
             return true;
 48  
 
 49  0
         if (!(object instanceof ChangeKey))
 50  0
             return false;
 51  
 
 52  0
         ChangeKey other = (ChangeKey) object;
 53  
 
 54  0
         return same(_propertyName, other._propertyName)
 55  
                 && same(_componentPath, other._componentPath);
 56  
     }
 57  
 
 58  
     private boolean same(String s1, String s2)
 59  
     {
 60  0
         return s1 == s2 || (s1 != null && s1.equals(s2));
 61  
     }
 62  
 
 63  
     public String getComponentPath()
 64  
     {
 65  0
         return _componentPath;
 66  
     }
 67  
 
 68  
     public String getPropertyName()
 69  
     {
 70  0
         return _propertyName;
 71  
     }
 72  
 
 73  
     /**
 74  
      * Returns a hash code computed from the property name and component path.
 75  
      */
 76  
 
 77  
     public int hashCode()
 78  
     {
 79  0
         if (_hashCode == -1)
 80  
         {
 81  0
             _hashCode = 31 * 27 + _propertyName.hashCode();
 82  
 
 83  0
             if (_componentPath != null)
 84  0
                 _hashCode = 31 * _hashCode + _componentPath.hashCode();
 85  
         }
 86  
 
 87  0
         return _hashCode;
 88  
     }
 89  
 }