Drizzled Public API Documentation

table_definition_cache.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 Brian Aker
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 #include <config.h>
22 
23 #include <plugin/table_cache_dictionary/dictionary.h>
24 
25 using namespace drizzled;
26 using namespace std;
27 
28 table_cache_dictionary::TableDefinitionCache::TableDefinitionCache() :
29  plugin::TableFunction("DATA_DICTIONARY", "TABLE_DEFINITION_CACHE")
30 {
31  add_field("TABLE_SCHEMA", plugin::TableFunction::STRING, MAXIMUM_IDENTIFIER_LENGTH, false);
32  add_field("TABLE_NAME", plugin::TableFunction::STRING, MAXIMUM_IDENTIFIER_LENGTH, false);
33  add_field("VERSION", plugin::TableFunction::NUMBER, 0, false);
34  add_field("TABLE_COUNT", plugin::TableFunction::NUMBER, 0, false);
35  add_field("IS_NAME_LOCKED", plugin::TableFunction::BOOLEAN, 0, false);
36 }
37 
38 table_cache_dictionary::TableDefinitionCache::Generator::Generator(drizzled::Field **arg) :
39  drizzled::plugin::TableFunction::Generator(arg)
40 {
41 }
42 
44 {
45  while (drizzled::TableShare::shared_ptr share= table_definition_cache_generator)
46  {
52  /* TABLE_SCHEMA 1 */
53  push(share->getSchemaNameRef());
54 
55  /* TABLE_NAME 2 */
56  push(share->getTableNameRef());
57 
58  /* VERSION 3 */
59  push(static_cast<int64_t>(share->getVersion()));
60 
61  /* TABLE_COUNT 4 */
62  push(static_cast<uint64_t>(share->getTableCount()));
63 
64  /* IS_NAME_LOCKED */
65  push(false);
66 
67  return true;
68  }
69 
70  return false;
71 }