Drizzled Public API Documentation

query_rewrite.cc
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2010 Padraig O'Sullivan
5  *
6  * Authors:
7  *
8  * Padraig O'Sullivan <posullivan@akibainc.com>
9  *
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; version 2 of the License.
13  *
14  * This program 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. See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22  */
23 
24 #include <config.h>
25 #include <drizzled/plugin/query_rewrite.h>
26 #include <drizzled/gettext.h>
27 
28 #include <algorithm>
29 #include <vector>
30 
31 namespace drizzled
32 {
33 
34 namespace plugin
35 {
36 
37 std::vector<plugin::QueryRewriter *> all_rewriters;
38 
39 
40 bool QueryRewriter::addPlugin(QueryRewriter *in_rewriter)
41 {
42  if (in_rewriter != NULL)
43  {
44  all_rewriters.push_back(in_rewriter);
45  }
46  return false;
47 }
48 
49 
50 void QueryRewriter::removePlugin(QueryRewriter *in_rewriter)
51 {
52  if (in_rewriter != NULL)
53  {
54  all_rewriters.erase(std::find(all_rewriters.begin(),
55  all_rewriters.end(),
56  in_rewriter));
57  }
58 }
59 
60 
61 /*
62  * This is the QueryRewriter::rewrite entry point.
63  * This gets called from within the Drizzle kernel.
64  */
65 void QueryRewriter::rewriteQuery(const std::string &schema, std::string &to_rewrite)
66 {
67  for (std::vector<plugin::QueryRewriter *>::iterator iter= all_rewriters.begin();
68  iter != all_rewriters.end();
69  ++iter)
70  {
71  (*iter)->rewrite(schema, to_rewrite);
72  }
73 }
74 
75 } /* namespace plugin */
76 
77 } /* namespace drizzled */
static void rewriteQuery(const std::string &schema, std::string &to_rewrite)