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101 lines
3 KiB
C++
101 lines
3 KiB
C++
/*
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Copyright (c) 2007, Antony T Curtis
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Neither the name of FederatedX nor the names of its
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contributors may be used to endorse or promote products derived from
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this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*#define MYSQL_SERVER 1*/
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#include <my_global.h>
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#include "sql_priv.h"
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#include "ha_federatedx.h"
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#include "m_string.h"
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#ifdef USE_PRAGMA_IMPLEMENTATION
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#pragma implementation // gcc: Class implementation
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#endif
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typedef federatedx_io *(*instantiate_io_type)(MEM_ROOT *server_root,
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FEDERATEDX_SERVER *server);
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struct io_schemes_st
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{
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const char *scheme;
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instantiate_io_type instantiate;
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};
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static const io_schemes_st federated_io_schemes[] =
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{
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{ "mysql", &instantiate_io_mysql },
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{ "null", instantiate_io_null } /* must be last element */
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};
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federatedx_io::federatedx_io(FEDERATEDX_SERVER *aserver)
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: server(aserver), owner_ptr(0), txn_next(0), idle_next(0),
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active(FALSE), busy(FALSE), readonly(TRUE)
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{
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DBUG_ENTER("federatedx_io::federatedx_io");
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DBUG_ASSERT(server);
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mysql_mutex_assert_owner(&server->mutex);
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server->io_count++;
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DBUG_VOID_RETURN;
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}
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federatedx_io::~federatedx_io()
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{
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DBUG_ENTER("federatedx_io::~federatedx_io");
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server->io_count--;
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DBUG_VOID_RETURN;
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}
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bool federatedx_io::handles_scheme(const char *scheme)
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{
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const io_schemes_st *ptr = federated_io_schemes;
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const io_schemes_st *end = ptr + array_elements(federated_io_schemes);
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while (ptr != end && strcasecmp(scheme, ptr->scheme))
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++ptr;
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return ptr != end;
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}
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federatedx_io *federatedx_io::construct(MEM_ROOT *server_root,
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FEDERATEDX_SERVER *server)
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{
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const io_schemes_st *ptr = federated_io_schemes;
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const io_schemes_st *end = ptr + (array_elements(federated_io_schemes) - 1);
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while (ptr != end && strcasecmp(server->scheme, ptr->scheme))
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++ptr;
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return ptr->instantiate(server_root, server);
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}
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