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/*
-*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
* Definitions required for Query Cache plugin
* Copyright (C) 2008 Sun Microsystems, Toru Maesaka
*
* 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
*/
#ifndef DRIZZLED_PLUGIN_QUERY_CACHE_H
#define DRIZZLED_PLUGIN_QUERY_CACHE_H
/*
This is the API that a qcache plugin must implement.
it should implement each of these function pointers.
if a function pointer is NULL (not loaded), that's ok.
Return:
false = success
true = failure
*/
class QueryCache
{
std::string name;
public:
QueryCache(std::string name_arg): name(name_arg) {}
QueryCache(const char *name_arg): name(name_arg) {}
std::string getName() { return name; }
virtual ~QueryCache() {}
/* Lookup the cache and transmit the data back to the client */
virtual bool try_fetch_and_send(Session *session,
bool is_transactional)= 0;
virtual bool set(Session *session, bool is_transactional)= 0;
virtual bool invalidate_table(Session *session, bool is_transactional)= 0;
virtual bool invalidate_db(Session *session, const char *db_name,
bool transactional)= 0;
virtual bool flush(Session *session)= 0;
};
#endif /* DRIZZLED_PLUGIN_QUERY_CACHE_H */
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