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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 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; version 2 of the License.
*
* 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
*/
#pragma once
#include <drizzled/plugin/client.h>
#include <drizzled/plugin/query_cache.h>
#include <drizzled/plugin/transactional_storage_engine.h>
#include <drizzled/select_result.h>
#include <drizzled/sql_lex.h>
#include <drizzled/open_tables_state.h>
namespace drizzled {
class select_send : public select_result
{
public:
bool send_eof()
{
/*
We may be passing the control from mysqld to the client: release the
InnoDB adaptive hash S-latch to avoid thread deadlocks if it was reserved
by session
*/
plugin::TransactionalStorageEngine::releaseTemporaryLatches(session);
/* Unlock tables before sending packet to gain some speed */
if (session->open_tables.lock)
{
session->unlockTables(session->open_tables.lock);
session->open_tables.lock= 0;
}
session->my_eof();
return false;
}
void send_fields(List<Item>& list)
{
session->getClient()->sendFields(list);
}
/* Send data to client. Returns 0 if ok */
bool send_data(List<Item>& items)
{
if (unit->offset_limit_cnt)
{ // using limit offset,count
unit->offset_limit_cnt--;
return false;
}
/*
We may be passing the control from mysqld to the client: release the
InnoDB adaptive hash S-latch to avoid thread deadlocks if it was reserved
by session
*/
plugin::TransactionalStorageEngine::releaseTemporaryLatches(session);
List<Item>::iterator li(items.begin());
char buff[MAX_FIELD_WIDTH];
String buffer(buff, sizeof(buff), &my_charset_bin);
while (Item* item= li++)
{
item->send(session->getClient(), &buffer);
}
/* Insert this record to the Resultset into the cache */
/*
if (session->query_cache_key != "" && session->getResultsetMessage() != NULL)
plugin::QueryCache::insertRecord(session, items);
*/
session->sent_row_count++;
if (session->is_error())
return true;
return session->getClient()->flush();
}
};
} /* namespace drizzled */
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