InCriteria


1   package org.apache.ojb.broker.query;
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 java.util.Collection  ;
19  
20  /**
21   * SelectionCriteria for 'in (a,b,c..)'
22   * 
23   * @author <a HREF="mailto:jbraeuchi@gmx.ch">Jakob Braeuchi</a>
24   * @version $Id: InCriteria.java,v 1.11.2.1 2005/12/21 22:27:09 tomdz Exp $
25   */
26  public class InCriteria extends ValueCriteria
27  {
28      InCriteria(Object   anAttribute, Object   aValue, String   aClause, String   anAlias)
29      {
30          super(anAttribute, aValue, aClause, anAlias);
31      }
32   
33      InCriteria(Object   anAttribute, Object   aValue, String   aClause, UserAlias anAlias)
34      {
35          super(anAttribute, aValue, aClause, anAlias);
36      }
37   
38      /**
39       * @see org.apache.ojb.broker.query.SelectionCriteria#isBindable()
40       * BRJ: empty Collection is bindable
41       */
42      protected boolean isBindable()
43      {
44          if (getValue() instanceof Collection  )
45          {
46              Collection   coll = (Collection  )getValue();
47              return coll.isEmpty();
48          }   
49          else
50          {
51              return true;
52          }   
53      }
54  
55  }
56  
57
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