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Java > Open Source Codes > com > caucho > quercus > program > StatementHandle


1 /*
2  * Copyright (c) 1998-2006 Caucho Technology -- all rights reserved
3  *
4  * This file is part of Resin(R) Open Source
5  *
6  * Each copy or derived work must preserve the copyright notice and this
7  * notice unmodified.
8  *
9  * Resin Open Source is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * Resin Open Source is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17  * of NON-INFRINGEMENT. See the GNU General Public License for more
18  * details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with Resin Open Source; if not, write to the
22  *
23  * Free Software Foundation, Inc.
24  * 59 Temple Place, Suite 330
25  * Boston, MA 02111-1307 USA
26  *
27  * @author Scott Ferguson
28  */
29
30 package com.caucho.quercus.program;
31
32 /**
33  * A handle to a statement
34  */
35 public class StatementHandle {
36   public static final StatementHandle NULL
37     = new StatementHandle(NullStatement.NULL);
38
39   private final StatementHandle _parent;
40   private final StatementHandle _previous;
41
42   private Statement _statement;
43
44   public StatementHandle(StatementHandle parent, StatementHandle previous)
45   {
46     _parent = parent;
47     _previous = previous;
48   }
49
50   private StatementHandle(Statement statement)
51   {
52     _parent = null;
53     _previous = null;
54
55     _statement = statement;
56   }
57
58   /**
59    * Sets the statement.
60    */
61   public void setStatement(Statement statement)
62   {
63     _statement = statement;
64   }
65
66   /**
67    * Gets the statement.
68    */
69   public Statement getStatement()
70   {
71     return _statement;
72   }
73 }
74
75
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