FairCom DB API for C

CTDB_ON_DATABASE_DISCONNECT

A CTDB_ON_DATABASE_DISCONNECT callback is invoked just before a database disconnect is performed. The handle passed as a parameter with this callback is a database handle and you can safely typecast the handle parameter to a pCTDBDATABASE structure pointer.

The database disconnect callback may be used to undo and cleanup any operations performed by a database connect callback.

Below is an example demonstrating how to clear the callbacks established by the database connect callback.

FairCom DB API C API Example

CTDBRET ctdbDECL OnDatabaseDisconnect(CTHANDLE Handle)

{

CTDBRET Retval = CTDBRET_OK;

pCTDBDATABASE pDatabase = (pCTDBDATABASE)Handle;

if (!pDatabase)

Retval = CTDBRET_NOTDATABASE;

else

{

Retval = ctdbClearCallback(Handle, CTDB_ON_TABLE_OPEN);

if (Retval == CTDBRET_OK)

Retval = ctdbClearCallback(Handle, CTDB_ON_TABLE_CLOSE);

}

return Retval;

}