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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2009 Sun Microsystems, Inc.
*
* 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 <drizzled/show.h>
#include <drizzled/session.h>
#include <drizzled/statement/alter_schema.h>
#include <drizzled/plugin/storage_engine.h>
#include <drizzled/schema.h>
#include <drizzled/message.h>
#include <drizzled/sql_lex.h>
#include <string>
using namespace std;
namespace drizzled {
bool statement::AlterSchema::execute()
{
if (not validateSchemaOptions())
return true;
identifier::Schema schema_identifier(lex().name);
if (not schema::check(session(), schema_identifier))
{
my_error(ER_WRONG_DB_NAME, schema_identifier);
return false;
}
identifier::Schema identifier(lex().name);
message::schema::shared_ptr old_definition= plugin::StorageEngine::getSchemaDefinition(identifier);
if (not old_definition)
{
my_error(ER_SCHEMA_DOES_NOT_EXIST, identifier);
return true;
}
if (session().inTransaction())
{
my_error(ER_TRANSACTIONAL_DDL_NOT_SUPPORTED, MYF(0));
return true;
}
/*
@todo right now the logic for alter schema is just sitting here, at some point this should be packaged up in a class/etc.
*/
// First initialize the schema message
drizzled::message::schema::init(schema_message, old_definition->name());
// We set the name from the old version to keep case preference
schema_message.set_version(old_definition->version());
schema_message.set_uuid(old_definition->uuid());
schema_message.mutable_engine()->set_name(old_definition->engine().name());
// We need to make sure we don't destroy any collation that might have
// been changed.
if (not schema_message.has_collation())
{
schema_message.set_collation(old_definition->collation());
}
drizzled::message::update(schema_message);
return not schema::alter(session(), schema_message, *old_definition);
}
} /* namespace drizzled */
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