Dbc::count |

`

    #include <db_cxx.h>

    int
    Dbc::count(db_recno_t *countp, u_int32_t flags);

Description: Dbc::count

The Dbc::count method returns a count of the number of data items for the key to which the cursor refers.

The Dbc::count method either returns a non-zero error value or throws an exception that encapsulates a non-zero error value on failure, and returns 0 on success.

Parameters
countp

- The countp parameter references memory into which the count of the number of duplicate data items is copied.

flags

- The flags parameter is currently unused, and must be set to 0.

Errors

The Dbc::count method may fail and throw DbException, encapsulating one of the following non-zero errors, or return one of the following non-zero errors:

DB_REP_HANDLE_DEAD

- The database handle has been invalidated because a replication election unrolled a committed transaction.

DB_REP_LOCKOUT

- The operation was blocked by client/master synchronization.

EINVAL

- If the cursor has not been initialized; or if an invalid flag value or parameter was specified.

Class Dbc
See Also Database Cursors and Related Methods`

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