#include <db.h> int DB->get_partition_callback(DB *db, u_int32_t *partsp, u_int32_t (**callback_fcn) (DB *dbp, DBT *key);
        The DB->get_partition_callback() method returns the partitioning information as
        set by the DB->set_partition() method.
    
         The DB->get_partition_callback() method may be called at any time during the life
         of the application.
    
         The DB->get_partition_callback() 
            
                  method returns a non-zero error value on failure and 0 on success.
            
            
        
    
                          The
                          DB->get_partition_callback()
                          method returns number of partitions in the
                          partsp
                          parameter.