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query_cache.h
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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* Copyright (C) 2008 Sun Microsystems, Toru Maesaka
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* Copyright (C) 2010 Djellel Eddine Difallah
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#pragma once
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#include <drizzled/plugin.h>
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#include <drizzled/plugin/plugin.h>
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#include <drizzled/sql_list.h>
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#include <
drizzled/visibility.h
>
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namespace
drizzled {
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namespace
plugin {
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/*
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This is the API that a qcache plugin must implement.
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*/
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class
DRIZZLED_API
QueryCache
:
public
Plugin
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{
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public
:
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explicit
QueryCache
(
const
std::string& name)
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:
Plugin
(name,
"QueryCache"
)
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{}
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/* these are the Query Cache interface functions */
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/* Lookup the cache and transmit the data back to the client */
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virtual
bool
doIsCached(
Session
*)= 0;
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/* Lookup the cache and transmit the data back to the client */
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virtual
bool
doSendCachedResultset(
Session
*)= 0;
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/* Send the current Resultset to the cache */
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virtual
bool
doSetResultset(
Session
*)= 0;
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/* initiate a new Resultset (header) */
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virtual
bool
doPrepareResultset(
Session
*)= 0;
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/* push a record to the current Resultset */
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virtual
bool
doInsertRecord(
Session
*,
List<Item>
&)= 0;
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static
bool
addPlugin(
QueryCache
*);
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static
void
removePlugin(
QueryCache
*);
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/* These are the functions called by the rest of the Drizzle server */
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static
bool
isCached(
Session
*);
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static
bool
sendCachedResultset(
Session
*);
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static
bool
prepareResultset(
Session
*);
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static
bool
setResultset(
Session
*);
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static
bool
insertRecord(
Session
*,
List<Item>
&);
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};
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}
/* namespace plugin */
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}
/* namespace drizzled */
drizzled::Session
Definition:
session.h:81
drizzled::plugin::Plugin
Definition:
plugin.h:34
DRIZZLED_API
#define DRIZZLED_API
Definition:
visibility.h:62
visibility.h
Visibility Control Macros.
drizzled::plugin::QueryCache
Definition:
query_cache.h:35
drizzled::List
Definition:
sql_list.h:324
drizzled
plugin
query_cache.h
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