1   /*
2    * Copyright 2003 - 2013 The eFaps Team
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *     http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   *
16   * Revision:        $Rev$
17   * Last Changed:    $Date$
18   * Last Changed By: $Author$
19   */
20  
21  
22  package org.efaps.db.search.value;
23  
24  import org.efaps.db.wrapper.SQLPart;
25  import org.efaps.db.wrapper.SQLSelect;
26  
27  /**
28   * TODO comment!
29   *
30   * @author The eFaps Team
31   * @version $Id$
32   */
33  public class QNullValue
34      extends AbstractQValue
35  {
36      /**
37       * {@inheritDoc}
38       */
39      @Override
40      public QNullValue appendSQL(final SQLSelect _sql)
41      {
42          _sql.addPart(SQLPart.NULL);
43          return this;
44      }
45  }