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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2010 Brian Aker
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <config.h>
#include <plugin/show_dictionary/dictionary.h>
#include <drizzled/identifier.h>
using namespace std;
using namespace drizzled;
ShowTables::ShowTables() :
show_dictionary::Show("SHOW_TABLES")
{
add_field("TABLE_NAME", plugin::TableFunction::STRING, MAXIMUM_IDENTIFIER_LENGTH, false);
}
ShowTables::Generator::Generator(drizzled::Field **arg) :
show_dictionary::Show::Generator(arg),
is_primed(false)
{
if (not isShowQuery())
return;
statement::Show& select= static_cast<statement::Show&>(statement());
if (not select.getShowSchema().empty())
{
schema_name.append(select.getShowSchema());
assert(not schema_name.empty());
}
}
bool ShowTables::Generator::nextCore()
{
if (is_primed)
{
table_iterator++;
}
else
{
if (schema_name.empty())
{
is_primed= true;
return false;
}
identifier::Schema identifier(schema_name);
plugin::StorageEngine::getIdentifiers(getSession(), identifier, set_of_identifiers);
table_iterator= set_of_identifiers.begin();
is_primed= true;
}
if (table_iterator == set_of_identifiers.end())
return false;
if (isWild((*table_iterator).getTableName()))
return false;
return true;
}
bool ShowTables::Generator::next()
{
while (not nextCore())
{
if (table_iterator != set_of_identifiers.end())
continue;
return false;
}
return true;
}
bool ShowTables::Generator::populate()
{
if (not next())
return false;
fill();
return true;
}
void ShowTables::Generator::fill()
{
/* TABLE_NAME */
push((*table_iterator).getTableName());
}
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