Drizzled Public API Documentation

statement.h
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2009 Sun Microsystems, Inc.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
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 for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #pragma once
22 
23 #include <drizzled/definitions.h>
24 #include <drizzled/error.h>
25 #include <drizzled/sql_parse.h>
26 #include <drizzled/sql_base.h>
27 
28 namespace drizzled {
29 namespace statement {
30 
35 class Statement
36 {
37 public:
38  Statement(Session *in_session) :
39  _session(*in_session)
40  {}
41 
42  virtual ~Statement() {}
43 
44  void set_command(enum_sql_command);
45  LEX& lex();
46  session::Transactions& transaction();
47 
53  virtual bool execute()= 0;
54 
55  /* True if can be in transaction. Currently only DDL is not.
56  This should go away when DDL commands are within transactions. */
57  virtual bool isTransactional()
58  {
59  return false;
60  }
61 
62  Session& session() const
63  {
64  return _session;
65  }
66 
67  virtual bool isShow() { return false; }
68 
69 private:
70  Session& _session;
71 };
72 
73 } /* namespace statement */
74 } /* namespace drizzled */
75 
Represents a statement to be executed.
Definition: statement.h:35