1
/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
4
* Copyright (C) 2010 Brian Aker
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.
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.
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
22
#include "plugin/show_dictionary/dictionary.h"
23
#include "drizzled/identifier.h"
27
using namespace drizzled;
29
static const string VARCHAR("VARCHAR");
30
/* VARBINARY already defined elsewhere */
31
static const string VARBIN("VARBINARY");
32
static const string DOUBLE("DOUBLE");
33
static const string BLOB("BLOB");
34
static const string TEXT("TEXT");
35
static const string ENUM("ENUM");
36
static const string INTEGER("INTEGER");
37
static const string BIGINT("BIGINT");
38
static const string DECIMAL("DECIMAL");
39
static const string DATE("DATE");
40
static const string TIMESTAMP("TIMESTAMP");
41
static const string DATETIME("DATETIME");
43
ShowColumns::ShowColumns() :
44
show_dictionary::Show("SHOW_COLUMNS")
48
add_field("Null", plugin::TableFunction::BOOLEAN, 0 , false);
50
add_field("Default_is_NULL", plugin::TableFunction::BOOLEAN, 0, false);
51
add_field("On_Update");
54
ShowColumns::Generator::Generator(Field **arg) :
55
show_dictionary::Show::Generator(arg),
56
is_tables_primed(false),
57
is_columns_primed(false),
60
if (not isShowQuery())
63
statement::Show *select= static_cast<statement::Show *>(getSession().lex->statement);
65
if (not select->getShowTable().empty() && not select->getShowSchema().empty())
67
table_name.append(select->getShowTable().c_str());
68
identifier::Table identifier(select->getShowSchema().c_str(), select->getShowTable().c_str());
70
is_tables_primed= plugin::StorageEngine::getTableDefinition(getSession(),
76
bool ShowColumns::Generator::nextColumnCore()
78
if (is_columns_primed)
84
if (not isTablesPrimed())
88
is_columns_primed= true;
91
if (column_iterator >= getTableProto()->field_size())
94
column= getTableProto()->field(column_iterator);
100
bool ShowColumns::Generator::nextColumn()
102
while (not nextColumnCore())
110
bool ShowColumns::Generator::populate()
113
if (not nextColumn())
121
void ShowColumns::Generator::pushType(message::Table::Field::FieldType type, const string collation)
126
case message::Table::Field::VARCHAR:
127
push(collation.compare("binary") ? VARCHAR : VARBIN);
129
case message::Table::Field::DOUBLE:
132
case message::Table::Field::BLOB:
133
push(collation.compare("binary") ? TEXT : BLOB);
135
case message::Table::Field::ENUM:
138
case message::Table::Field::INTEGER:
141
case message::Table::Field::BIGINT:
144
case message::Table::Field::DECIMAL:
147
case message::Table::Field::DATE:
150
case message::Table::Field::EPOCH:
153
case message::Table::Field::DATETIME:
160
void ShowColumns::Generator::fill()
166
pushType(column.type(), column.string_options().collation());
169
push(not column.constraints().is_notnull());
172
if (column.options().has_default_value())
173
push(column.options().default_value());
174
else if (column.options().has_default_expression())
175
push(column.options().default_expression());
177
push(column.options().default_bin_value());
179
/* Default_is_NULL */
180
push(column.options().default_null());
183
push(column.options().update_expression());