c-treeDB API API for C

ctdbSetDatabaseExclusive

Sets or clears the database exclusive flag.

Declaration

CTDBRET ctdbSetDatabaseExclusive(CTHANDLE Handle, CTBOOL flag);

Description

ctdbSetDatabaseExclusive() sets or clears the database exclusive flag. If a database exclusive flag is set, only one connection will be allowed on this database. Set the database exclusive flag after allocating the database handle, and before performing a connect. Setting the database exclusive flag after a database is connected will not have any effect during the current connection.

Handle is a database handle.
flag will set or clear the database exclusive flag.

Return

Value	Symbolic Constant	Explanation
0	CTDBRET_OK	No error occurred.

See Appendix A for a complete listing of valid c-tree Plus error values.

Example

/* perform an exclusive logon and connect */

CTHANDLE hSession = ctdbAllocSession(CTSESSION_CTDB);

CTHANDLE hDatabase = ctdbAllocDatabase(hSession);

if (hSession)

{

ctdbSetSessionExclusive(hSession, YES);

if (ctdbLogon(hSession, "FAIRCOM", "ADMIN", "ADMIN") != CTDBRET_OK)

printf("ctdbLogon failed\n");

else

{

ctdbSetDatabaseExclusive(hDatabase, YES);

if (ctdbConnect(hDatabase, "MyData") != CTDBRET_OK)

printf("ctdbConnect failed\n");

}

ctdbFreeDatabase(hDatabase);

ctdbFreeSession(hSession);