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Java > Open Source Codes > org > xquark > extractor > algebra > ConstantTempTable


1 /*
2  * This file belongs to the XQuark distribution.
3  * Copyright (C) 2003 Universite de Versailles Saint-Quentin.
4  *
5  * This program is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2.1 of the License, or (at your option) any later version.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this program; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307.
18  * You can also get it at http://www.gnu.org/licenses/lgpl.html
19  *
20  * For more information on this software, see http://www.xquark.org.
21  */
22
23 package org.xquark.extractor.algebra;
24
25 import java.util.ArrayList JavaDoc;
26 import java.util.List JavaDoc;
27 import java.util.Map JavaDoc;
28
29 import org.xquark.extractor.common.SqlWrapperException;
30 import org.xquark.extractor.sql.SqlExpression;
31
32 /**
33  * NOTE: This class may have been used when front-end used to pass lists of literals.
34  * May be removed ?
35  */
36 public final class ConstantTempTable extends Table
37 {
38
39     private static final String JavaDoc RCSRevision = "$Revision: 1.3 $";
40     private static final String JavaDoc RCSName = "$Name: $";
41
42
43     protected List JavaDoc _tuples;
44
45
46     public ConstantTempTable(org.xquark.extractor.metadata.Table mTable) {
47         super(mTable);
48     }
49
50
51     synchronized Object JavaDoc clone(Map JavaDoc clonedExprs) throws CloneNotSupportedException JavaDoc {
52         //Trace.enter(this, "clone(Map clonedExprs)");
53
54         ConstantTempTable retVal = (ConstantTempTable)super.clone(clonedExprs);
55
56         clonedExprs.put(this, retVal);
57         //Trace.exit(this, "clone(Map clonedExprs)");
58 return retVal;
59     }
60
61
62     public void addValues(List JavaDoc values) {
63         if (null == _tuples ) {
64             _tuples = new ArrayList JavaDoc();
65         }
66         _tuples.add(values);
67     }
68
69     public List JavaDoc getValues() {
70         return _tuples;
71     }
72
73     public SqlExpression accept (GenSqlVisitor visitor) throws SqlWrapperException {
74         return visitor.visit(this);
75     }
76
77     public void accept (AlgebraVisitor visitor) throws SqlWrapperException {
78         visitor.visit(this);
79     }
80
81 }
82
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