AttributeDescriptorBase


1   package org.apache.ojb.broker.metadata;
2   
3   /* Copyright 2002-2005 The Apache Software Foundation
4    *
5    * Licensed under the Apache License, Version 2.0 (the "License");
6    * you may not use this file except in compliance with the License.
7    * You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  
18  import org.apache.ojb.broker.metadata.fieldaccess.PersistentField;
19  import org.apache.ojb.broker.metadata.fieldaccess.PersistentFieldFactory;
20  
21  import java.io.Serializable  ;
22  
23  /**
24   * Is the base class for all other attribute descriptors.
25   * It holds basic the mapping information for a specific attribute.
26   *
27   * @author <a HREF="mailto:thma@apache.org">Thomas Mahler<a>
28   * @version $Id: AttributeDescriptorBase.java,v 1.17.2.1 2005/12/21 22:26:10 tomdz Exp $
29   */
30  public class AttributeDescriptorBase extends DescriptorBase implements Serializable  
31  {
32      private static final long serialVersionUID = -818671542770428043L;
33  
34      protected PersistentField m_PersistentField = null;
35      protected ClassDescriptor m_ClassDescriptor = null;
36  
37      /**
38       * Constructor declaration
39       */
40      public AttributeDescriptorBase(ClassDescriptor descriptor)
41      {
42          this.m_ClassDescriptor = descriptor;
43      }
44  
45      /**
46       * @throws MetadataException if an error occours when setting the PersistenteField
47       */
48      public void setPersistentField(Class   c, String   fieldname)
49      {
50          m_PersistentField = PersistentFieldFactory.createPersistentField(c, fieldname);
51      }
52  
53      public void setPersistentField(PersistentField pf)
54      {
55          m_PersistentField = pf;
56      }
57  
58      /**
59       *
60       */
61      public PersistentField getPersistentField()
62      {
63          return m_PersistentField;
64      }
65  
66      /**
67       * @return the name of the Attribute
68       */
69      public String   getAttributeName()
70      {
71          return getPersistentField().getName();
72      }
73  
74      /**
75       * Gets the classDescriptor.
76       * @return Returns a ClassDescriptor
77       */
78      public ClassDescriptor getClassDescriptor()
79      {
80          return m_ClassDescriptor;
81      }
82  
83      /**
84       * Sets the classDescriptor.
85       * @param classDescriptor The classDescriptor to set
86       */
87      public void setClassDescriptor(ClassDescriptor classDescriptor)
88      {
89          m_ClassDescriptor = classDescriptor;
90      }
91  
92      public String   toString()
93      {
94          StringBuffer   buf = new StringBuffer  ();
95          buf.append(m_PersistentField);
96          buf.append(", field_belongs_to " + m_ClassDescriptor.getClassNameOfObject());
97          buf.append(", "+super.toString());
98          return buf.toString();
99      }
100 }
101
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