ClassBehaviourBinding


1   /*
2    * Copyright (C) 2005 Alfresco, Inc.
3    *
4    * Licensed under the Mozilla Public License version 1.1 
5    * with a permitted attribution clause. You may obtain a
6    * copy of the License at
7    *
8    *   http://www.alfresco.org/legal/license.txt
9    *
10   * Unless required by applicable law or agreed to in writing,
11   * software distributed under the License is distributed on an
12   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
13   * either express or implied. See the License for the specific
14   * language governing permissions and limitations under the
15   * License.
16   */
17  package org.alfresco.repo.policy;
18  
19  import org.alfresco.service.cmr.dictionary.ClassDefinition;
20  import org.alfresco.service.cmr.dictionary.DictionaryService;
21  import org.alfresco.service.cmr.repository.NodeRef;
22  import org.alfresco.service.namespace.QName;
23  
24  
25  /**
26   * Behaviour binding to a Class (Type or Aspect) in the Content Model.
27   * 
28   * @author David Caruana
29   *
30   */
31  /*package*/ class ClassBehaviourBinding implements BehaviourBinding
32  {
33      // The dictionary service
34      private DictionaryService dictionary;
35      
36      // The class qualified name
37      private QName classQName; 
38  
39      // Instance level node reference
40      private NodeRef nodeRef;
41      
42  
43      /**
44       * Construct.
45       * 
46       * @param dictionary  the dictionary service
47       * @param nodeRef  the instance level node reference
48       * @param classQName  the Class qualified name
49       */
50      /*package*/ ClassBehaviourBinding(DictionaryService dictionary, NodeRef nodeRef, QName classQName)
51      {
52          this.dictionary = dictionary;
53          this.nodeRef = nodeRef;
54          this.classQName = classQName;
55      }
56      
57      /**
58       * Construct.
59       * 
60       * @param dictionary  the dictionary service
61       * @param classQName  the Class qualified name
62       */
63      /*package*/ ClassBehaviourBinding(DictionaryService dictionary, QName classQName)
64      {
65          this(dictionary, null, classQName);
66      }
67  
68      /*package*/ DictionaryService getDictionary()
69      {
70          return dictionary;
71      }
72      
73      /* (non-Javadoc)
74       * @see org.alfresco.repo.policy.BehaviourBinding#generaliseBinding()
75       */
76      public BehaviourBinding generaliseBinding()
77      {
78          BehaviourBinding generalisedBinding = null;
79          ClassDefinition classDefinition = dictionary.getClass(classQName);
80          if (classDefinition == null)
81          {
82              throw new PolicyException("Class definition " + classQName.toPrefixString() + " does not exist.");
83          }
84          
85          QName parentClassName = classDefinition.getParentName();
86          if (parentClassName != null)
87          {
88              generalisedBinding = new ClassBehaviourBinding(dictionary, parentClassName);
89          }
90          return generalisedBinding;
91      }
92      
93      /**
94       * Gets the instance level node reference
95       * 
96       * @return  the node reference
97       */
98      public NodeRef getNodeRef()
99      {
100         return nodeRef;
101     }
102     
103     /**
104      * Gets the class qualified name
105      * 
106      * @return  the class qualified name
107      */
108     public QName getClassQName()
109     {
110         return classQName;
111     }
112 
113     @Override  
114     public boolean equals(Object   obj)
115     {
116         if (obj == null || !(obj instanceof ClassBehaviourBinding))
117         {
118             return false;
119         }
120         return classQName.equals(((ClassBehaviourBinding)obj).classQName);
121     }
122 
123     @Override  
124     public int hashCode()
125     {
126         return classQName.hashCode();
127     }
128 
129     @Override  
130     public String   toString()
131     {
132         return "ClassBinding[class=" + classQName + "]";
133     }
134     
135 }
136
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