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Java > Open Source Codes > org > objectweb > medor > query > lib > BasicBinaryUnaryQueryNodeFactory


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 package org.objectweb.medor.query.lib;
24
25 import org.objectweb.medor.query.api.BinaryUnaryQueryNodeFactory;
26 import org.objectweb.medor.query.api.QueryNode;
27 import org.objectweb.medor.query.api.QueryTree;
28 import org.objectweb.medor.query.api.OperationType;
29 import org.objectweb.medor.api.TupleStructure;
30 import org.objectweb.medor.api.QueryNodeException;
31 import org.objectweb.medor.api.MedorException;
32 import org.objectweb.medor.expression.api.Expression;
33
34 public class BasicBinaryUnaryQueryNodeFactory
35     implements BinaryUnaryQueryNodeFactory {
36
37     public QueryNode createQueryNode(QueryTree child, short operationType,
38                                      Expression filter,
39                                      TupleStructure tupleStructure)
40             throws QueryNodeException {
41         try {
42             switch (operationType) {
43                 case OperationType.SELECT_PROJECT:
44                     //QueryNode sp = new SelectProject(child, filter, tupleStructure, null);
45 default:
46                     throw new QueryNodeException("QueryNode operation type error: " + operationType);
47             }
48         } catch (MedorException e) {
49             throw new QueryNodeException(e);
50         }
51     }
52
53     public QueryNode createQueryNode(QueryTree leftChild, QueryTree rightChild,
54                                      short operationType,
55                                      Expression filter,
56                                      TupleStructure tupleStructure)
57             throws QueryNodeException {
58         try {
59             switch (operationType) {
60                 case OperationType.JOIN_PROJECT:
61                     //return new JoinProject(leftChild, rightChild, filter, tupleStructure, null);
62 default:
63                     throw new QueryNodeException("QueryNode operation type error: " + operationType);
64             }
65         } catch (MedorException e) {
66             throw new QueryNodeException(e);
67         }
68     }
69 }
70
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