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Java > Open Source Codes > org > objectweb > medor > optim > api > ExecPlanGenerator


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.optim.api;
25
26 /**
27  * This interface represents the generator of a QueryTree which is evaluable
28  * by the QueryEvaluator.
29  * Typically, generating typed specializations of the Filter is performed
30  * at this stage.
31  * It also associates a TupleLoader to each node, and generates the indexes
32  * for each node (see QueryIndexGenerator).
33  */

34 public interface ExecPlanGenerator extends QueryTransformer {
35 }
36
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