The Db::get_type method
stores the type of the underlying access method (and file format) into
the memory referenced by type.
The returned value is one of DB_BTREE, DB_HASH,
DB_RECNO, or DB_QUEUE. This value may be used to
determine the type of the database after a return from Db::open
with the type argument set to DB_UNKNOWN.
The Db::get_type interface may not be called before the Db::open
interface has been called.
The Db::get_type method may fail and throw an exception or return a non-zero error for the following conditions:
- An invalid flag value or parameter was specified.
Called before Db::open was called.
The Db::get_type method may fail and throw an exception or return a non-zero error for errors specified for other Berkeley DB and C library or system methods.
If a catastrophic error has occurred, the Db::get_type method may fail and
either return DB_RUNRECOVERY or throw a
in which case all subsequent Berkeley DB calls will fail in the same way.
Databases and Related Methods
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