90 lines
3.0 KiB
C++
90 lines
3.0 KiB
C++
/*
|
|
Copyright (c) 2011, 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_TABLE_GUARD_H
|
|
#define NDB_TABLE_GUARD_H
|
|
|
|
#include <string>
|
|
|
|
#include "my_dbug.h"
|
|
#include "storage/ndb/include/ndbapi/Ndb.hpp"
|
|
#include "storage/ndb/include/ndbapi/NdbDictionary.hpp"
|
|
|
|
class Ndb_table_guard {
|
|
NdbDictionary::Dictionary *const m_dict;
|
|
const NdbDictionary::Table *m_ndbtab{nullptr};
|
|
int m_invalidate{0};
|
|
|
|
public:
|
|
Ndb_table_guard(NdbDictionary::Dictionary *dict) : m_dict(dict) {}
|
|
Ndb_table_guard(NdbDictionary::Dictionary *dict, const char *tabname)
|
|
: m_dict(dict) {
|
|
DBUG_TRACE;
|
|
init(tabname);
|
|
return;
|
|
}
|
|
Ndb_table_guard(Ndb *ndb, const char *dbname, const char *tabname)
|
|
: m_dict(ndb->getDictionary()) {
|
|
const std::string save_dbname(ndb->getDatabaseName());
|
|
if (ndb->setDatabaseName(dbname) != 0) {
|
|
// Failed to set databasname, indicate error by returning
|
|
// without initializing the table pointer
|
|
return;
|
|
}
|
|
init(tabname);
|
|
(void)ndb->setDatabaseName(save_dbname.c_str());
|
|
}
|
|
~Ndb_table_guard() {
|
|
DBUG_TRACE;
|
|
if (m_ndbtab) {
|
|
DBUG_PRINT("info",
|
|
("m_ndbtab: %p m_invalidate: %d", m_ndbtab, m_invalidate));
|
|
m_dict->removeTableGlobal(*m_ndbtab, m_invalidate);
|
|
m_ndbtab = NULL;
|
|
m_invalidate = 0;
|
|
}
|
|
return;
|
|
}
|
|
void init(const char *tabname) {
|
|
DBUG_TRACE;
|
|
/* Don't allow init() if already initialized */
|
|
DBUG_ASSERT(m_ndbtab == NULL);
|
|
m_ndbtab = m_dict->getTableGlobal(tabname);
|
|
m_invalidate = 0;
|
|
DBUG_PRINT("info", ("m_ndbtab: %p", m_ndbtab));
|
|
return;
|
|
}
|
|
const NdbDictionary::Table *get_table() const { return m_ndbtab; }
|
|
void invalidate() { m_invalidate = 1; }
|
|
const NdbDictionary::Table *release() {
|
|
DBUG_TRACE;
|
|
const NdbDictionary::Table *tmp = m_ndbtab;
|
|
DBUG_PRINT("info", ("m_ndbtab: %p", m_ndbtab));
|
|
m_ndbtab = 0;
|
|
return tmp;
|
|
}
|
|
};
|
|
|
|
#endif
|