polardbxengine/storage/ndb/plugin/ndb_dd_schema.h

62 lines
2.4 KiB
C++

/*
Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is also distributed with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have included with MySQL.
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, version 2.0, 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 NDB_DD_SCHEMA_H
#define NDB_DD_SCHEMA_H
namespace dd {
class Schema;
}
/**
@brief Read the counter and node id from the se_private_data field
of the Schema object
@param schema Pointer to the schema object from which the
values are to be read
@param[out] counter Output parameter to read the counter value into.
@param[out] node_id Output parameter to read the node_id value into.
@return Returns true if the values are read successfully.
false if the read failed.
*/
bool ndb_dd_schema_get_counter_and_nodeid(const dd::Schema *schema,
unsigned int &counter,
unsigned int &node_id);
/**
@brief Set the counter and node id values to the se_private_data
field of the Schema object
@param schema Pointer to the schema object to which the
values are to be set
@param counter The counter value to be set to the Schema.
@param node_id The node_id value to be set to the Schema.
*/
void ndb_dd_schema_set_counter_and_nodeid(dd::Schema *schema,
unsigned int counter,
unsigned int node_id);
#endif