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Java > Open Source Codes > org > objectweb > medor > api > RWTupleStructure


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, S. Chassande-Barrioz
22  */
23
24 package org.objectweb.medor.api;
25
26 /**
27  * Repesents an extension of TupleStructure where the Fields can be added
28  * or removed.
29  * <p>It is used by QueryNodes
30  * @see org.objectweb.medor.query.api.QueryNode
31  */
32
33 public interface RWTupleStructure {
34     /**
35      * Adds a Field to the current RWTupleStructure
36      * @param f The Field to be added.
37      */
38     void addField(Field f);
39
40     /**
41      * Removes a Field from the current RWTupleStructure.
42      * @param f The Field to be removed.
43      * @return false if the Field could not be removed (was not part of the
44      * TupleStructure).
45      */
46     boolean removeField(Field f);
47 }
48
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