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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008-2009 Sun Microsystems, Inc.
* Copyright (C) 2010 Jay Pipes
*
* Authors:
*
* Jay Pipes <jaypipes@gmail.com>
*
* 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
/**
* @file Defines the API for a TransactionApplier
*
* A TransactionApplier applies an event it has received from a TransactionReplicator (via
* a replicator's replicate() call, or it has read using a TransactionReader's read()
* call.
*/
#include <drizzled/plugin/plugin.h>
#include <drizzled/plugin/replication.h>
#include <drizzled/visibility.h>
namespace drizzled {
namespace plugin {
/**
* Base class for appliers of Transaction messages
*/
class DRIZZLED_API TransactionApplier : public Plugin
{
TransactionApplier();
TransactionApplier(const TransactionApplier &);
TransactionApplier& operator=(const TransactionApplier &);
public:
explicit TransactionApplier(std::string name_arg)
: Plugin(name_arg, "TransactionApplier")
{
}
virtual ~TransactionApplier() {}
/**
* Apply something to a target.
*
* @note
*
* It is important to note that memory allocation for the
* supplied pointer is not guaranteed after the completion
* of this function -- meaning the caller can dispose of the
* supplied message. Therefore, appliers which are
* implementing an asynchronous replication system must copy
* the supplied message to their own controlled memory storage
* area.
*
* @param Transaction message to be replicated
*/
virtual ReplicationReturnCode apply(Session &in_session,
const message::Transaction &to_apply)= 0;
static bool addPlugin(TransactionApplier *applier);
static void removePlugin(TransactionApplier *applier);
};
} /* namespace plugin */
} /* namespace drizzled */
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