Drizzled Public API Documentation

show_create_table.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 #include <plugin/show_dictionary/dictionary.h>
23 #include <drizzled/identifier.h>
24 #include <drizzled/message.h>
26 #include <google/protobuf/text_format.h>
27 #include <drizzled/plugin/authorization.h>
28 #include <string>
29 
30 using namespace std;
31 using namespace drizzled;
32 
33 ShowCreateTable::ShowCreateTable() :
34  show_dictionary::Show("TABLE_SQL_DEFINITION")
35 {
36  add_field("TABLE_NAME", plugin::TableFunction::STRING, MAXIMUM_IDENTIFIER_LENGTH, false);
37  add_field("TABLE_SQL_DEFINITION", plugin::TableFunction::STRING, TABLE_FUNCTION_BLOB_SIZE, false);
38 }
39 
40 ShowCreateTable::Generator::Generator(Field **arg) :
41  show_dictionary::Show::Generator(arg),
42  is_primed(false)
43 {
44  if (not isShowQuery())
45  return;
46 
47  statement::Show& select= static_cast<statement::Show&>(statement());
48 
49  if (not select.getShowTable().empty() && not select.getShowSchema().empty())
50  {
51  identifier::Table identifier(getSession().catalog().identifier(),
52  select.getShowSchema(),
53  select.getShowTable());
54 
55  if (not plugin::Authorization::isAuthorized(*getSession().user(),
56  identifier, false))
57  {
58  drizzled::error::access(*getSession().user(), identifier);
59  return;
60  }
61 
62  table_message= plugin::StorageEngine::getTableMessage(getSession(),
63  identifier);
64 
65  if (table_message)
66  is_primed= true;
67  else
68  my_error(ER_BAD_TABLE_ERROR, identifier);
69  }
70 }
71 
72 bool ShowCreateTable::Generator::populate()
73 {
74  enum drizzled::message::TransformSqlError transform_err;
75 
76  if (not is_primed)
77  return false;
78 
79  std::string create_sql;
80  transform_err= message::transformTableDefinitionToSql(*table_message,
81  create_sql,
82  message::DRIZZLE,
83  false);
84  if (transform_err != drizzled::message::NONE)
85  {
86  return false;
87  }
88 
89  push(table_message->name());
90  push(create_sql);
91  is_primed= false;
92 
93  return true;
94 }
TODO: Rename this file - func.h is stupid.