#include <db_cxx.h> int Db::set_blob_dir(const char *dir);
The Db::set_blob_dir() method sets the
directory where BLOB data is stored. Use this method if the
database is not opened within an encompassing environment. If an
environment is in use, use DbEnv::set_blob_dir() instead.
By default, if this method is not called then BLOB data is placed in a directory local to the current working directory.
Use Db::get_blob_dir() to identify the current storage location used for BLOB data.
This method configures operations performed using the specified Db handle, not all operations performed on the underlying database.
This method may not be called after Db::open() is called.
Unless otherwise specified, the
Db::set_blob_dir()
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.
The Db::set_blob_dir()
method may fail and throw a DbException
exception, encapsulating one of the following non-zero errors, or return one
of the following non-zero errors:
If the database was opened within a named environment; or if the method was called after Db::open() was called; or if an invalid parameter was specified.