StatementTreeObject


1   /**
2    * com.mckoi.database.StatementTreeObject  09 Sep 2001
3    *
4    * Mckoi SQL Database ( http://www.mckoi.com/database )
5    * Copyright (C) 2000, 2001, 2002  Diehl and Associates, Inc.
6    *
7    * This program is free software; you can redistribute it and/or
8    * modify it under the terms of the GNU General Public License
9    * Version 2 as published by the Free Software Foundation.
10   *
11   * This program is distributed in the hope that it will be useful,
12   * but WITHOUT ANY WARRANTY; without even the implied warranty of
13   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14   * GNU General Public License Version 2 for more details.
15   *
16   * You should have received a copy of the GNU General Public License
17   * Version 2 along with this program; if not, write to the Free Software
18   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
19   *
20   * Change Log:
21   * 
22   * 
23   */
24  
25  package com.mckoi.database;
26  
27  /**
28   * An complex object that is to be contained within a StatementTree object.
29   * A statement tree object must be serializable, and it must be able to
30   * reference all Expression objects so that they may be prepared.
31   *
32   * @author Tobias Downer
33   */
34  
35  public interface StatementTreeObject {
36  
37    /**
38     * Prepares all expressions in this statement tree object by passing the
39     * ExpressionPreparer object to the 'prepare' method of the expression.
40     */
41    void prepareExpressions(ExpressionPreparer preparer)
42                                                      throws DatabaseException;
43  
44    /**
45     * Performs a DEEP clone of this object if it is mutable, or a deep clone
46     * of its mutable members.  If the object is immutable then it may return
47     * 'this'.
48     */
49    Object   clone() throws CloneNotSupportedException  ;
50  
51  }
52
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