Field


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.api;
25  
26  import org.objectweb.jorm.type.api.PType;
27  import org.objectweb.medor.clone.api.Cloneable;
28  
29  /**
30   * A Field is one of the components of a TupleStructure.
31   * @author Sebastien Chassande-Barrioz
32   * @see TupleStructure
33   */
34  public interface Field extends Cloneable  , NullStatus, Comparable   {
35  
36      //The name of a field of type PName (NameDef) for extents
37      String   PNAMENAME = "_PName";
38  
39      /**
40       * Returns the Field name
41       * @return the Field name
42       */
43      String   getName();
44  
45      /**
46       * Returns the field type, as a PType
47       * @return the Field type
48       */
49      PType getType();
50  
51      /**
52       * What is the status of the Field regarding null values (NullStatus).
53       * @return the Null status of the Field
54       * @see NullStatus
55       */
56      //TODO remove this method if unused
57      short getNullStatus();
58  }
59
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