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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"
using namespace std;
using namespace drizzled;
ShowSchemas::ShowSchemas() :
plugin::TableFunction("DATA_DICTIONARY", "SHOW_SCHEMAS")
{
add_field("SCHEMA_NAME");
}
ShowSchemas::Generator::Generator(Field **arg) :
plugin::TableFunction::Generator(arg),
is_schema_primed(false)
{
}
/**
@note return true if a match occurs.
*/
bool ShowSchemas::Generator::checkSchema()
{
if (isWild((*schema_iterator).getSchemaName()))
return true;
return false;
}
bool ShowSchemas::Generator::nextSchemaCore()
{
if (is_schema_primed)
{
schema_iterator++;
}
else
{
plugin::StorageEngine::getSchemaIdentifiers(getSession(), schema_names);
schema_names.sort();
schema_iterator= schema_names.begin();
is_schema_primed= true;
}
if (schema_iterator == schema_names.end())
return false;
if (checkSchema())
return false;
return true;
}
bool ShowSchemas::Generator::nextSchema()
{
while (not nextSchemaCore())
{
if (schema_iterator == schema_names.end())
return false;
}
return true;
}
bool ShowSchemas::Generator::populate()
{
if (nextSchema())
{
fill();
return true;
}
return false;
}
/**
A lack of a parsed schema file means we are using defaults.
*/
void ShowSchemas::Generator::fill()
{
/* Schema */
push((*schema_iterator).getSchemaName());
}
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