DataSource :: openObjectSpace - Open object space
The object space handle is opened for the object space defined in objectSpaceName. The database handle of the data source must have been opened before. If the object space handle is already opened it will be closed before (closeObjectSpace()).
When the object space name is empty, the root object space of the database is referred to as object space handle.
Return value: Object space reference ( odaba::ObjectSpace & )
The reference refers to an opened or not opened object space handle.