RdbField


1   /**
2    * MEDOR: Middleware Enabling Distributed Object Requests
3    * 
4    * Copyright (C) 2001-2003 France Telecom R&D
5    * Contact: alexandre.lefebvre@rd.francetelecom.com
6    *
7    * This library is free software; you can redistribute it and/or
8    * modify it under the terms of the GNU Lesser General Public
9    * License as published by the Free Software Foundation; either
10   * version 2.1 of the License, or (at your option) any later version.
11   *
12   * This library is distributed in the hope that it will be useful,
13   * but WITHOUT ANY WARRANTY; without even the implied warranty of
14   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
15   * Lesser General Public License for more details.
16   *
17   * You should have received a copy of the GNU Lesser General Public
18   * License along with this library; if not, write to the Free Software
19   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20   *
21   * Initial developers: M. Alia, A. Lefebvre
22   */
23  
24  package org.objectweb.medor.query.rdb.api;
25  
26  import org.objectweb.medor.query.api.QueryTreeField;
27  
28  /**
29   * An RdbField represents a QueryTreeField which is associated to an
30   * RdbQueryLeaf.
31   *
32   * @author Sebastien Chassande-Barrioz
33   */
34  public interface RdbField extends QueryTreeField {
35  
36      /**
37       * Returns the name of the column, either in the SQL ResultSet in the case
38       * of RdbStringQueryLeaf, or the name of the column in the QualifiedTable
39       * in the case of RdbExpQueryLeaf. This name is not to be confused with the
40       * name of the Field itself.
41       * @return the name of the RdbField in the underlying resultset (in the case
42       * of a RdbStringQueryLeaf) or QualifiedTable (in the case of
43       * a RdbExpField in a RdbExpQueryLeaf).
44       */
45      String   getColumnName();
46  }
47
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