How to use the bsddb3.db function in bsddb3

    def next(self, flags=0): return self.get_1(flags|db.DB_NEXT)
    def prev(self, flags=0): return self.get_1(flags|db.DB_PREV)

def open (self, path, purge=0):
        self.path = path
        if purge:
            self.purge_database()
        print 'DB3OPEN: path=%s contains %s' %(path, os.listdir(path))
        
        self._pdb = self.db3open('PDB01', db.DB_BTREE)
        self._adb = self.db3open('AUT01', db.DB_BTREE)
        self._kdb = self.db3open('KEY01', db.DB_BTREE)
        self._ndb = self.db3open('NUM01', db.DB_BTREE)
        self._rdb = self.db3open('REF01', db.DB_BTREE)
        self._tdb = self.db3open('TIT01', db.DB_BTREE)
        self._cnf = self.db3open('CNF01', db.DB_HASH)
        self.sysid = Counter(self._cnf, 'SYS', 1)
        self.tmpid = Counter (self._cnf, 'TMP', 999000000)
        self.syscnt = Counter(self._cnf, 'SZS', 0)
        self.tmpcnt = Counter(self._cnf, 'SZT', 0)
        return

It assumes that the tables either exist and are in the right
        format or do not exist (in which case they get created).

        It is the responsibility of upgrade code to either create
        or remove invalid secondary index tables.
        """

        # index tables used just for speeding up searches
        self.surnames = self.__open_db(self.full_name, SURNAMES, db.DB_BTREE,
                            db.DB_DUP | db.DB_DUPSORT)

        db_maps = [
            ("id_trans",  IDTRANS,  db.DB_HASH, 0),
            ("fid_trans", FIDTRANS, db.DB_HASH, 0),
            ("eid_trans", EIDTRANS, db.DB_HASH, 0),
            ("pid_trans", PIDTRANS, db.DB_HASH, 0),
            ("sid_trans", SIDTRANS, db.DB_HASH, 0),
            ("cid_trans", CIDTRANS, db.DB_HASH, 0),
            ("oid_trans", OIDTRANS, db.DB_HASH, 0),
            ("rid_trans", RIDTRANS, db.DB_HASH, 0),
            ("nid_trans", NIDTRANS, db.DB_HASH, 0),
            ("tag_trans", TAGTRANS, db.DB_HASH, 0),
            ("parents", PPARENT, db.DB_HASH, 0),
            ("reference_map_primary_map",    REF_PRI, db.DB_BTREE, 0),
            ("reference_map_referenced_map", REF_REF, db.DB_BTREE, db.DB_DUPSORT),
            ]

        for (dbmap, dbname, dbtype, dbflags) in db_maps:
            _db = self.__open_db(self.full_name, dbname, dbtype,
                db.DB_DUP | dbflags)
            setattr(self, dbmap, _db)

    def first(self, flags=0): return self.get_1(flags|db.DB_FIRST)
    def last(self, flags=0): return self.get_1(flags|db.DB_LAST)

def open (self, path, purge=0):
        self.path = path
        if purge:
            self.purge_database()
        print 'DB3OPEN: path=%s contains %s' %(path, os.listdir(path))
        
        self._pdb = self.db3open('PDB01', db.DB_BTREE)
        self._adb = self.db3open('AUT01', db.DB_BTREE)
        self._kdb = self.db3open('KEY01', db.DB_BTREE)
        self._ndb = self.db3open('NUM01', db.DB_BTREE)
        self._rdb = self.db3open('REF01', db.DB_BTREE)
        self._tdb = self.db3open('TIT01', db.DB_BTREE)
        self._cnf = self.db3open('CNF01', db.DB_HASH)
        self.sysid = Counter(self._cnf, 'SYS', 1)
        self.tmpid = Counter (self._cnf, 'TMP', 999000000)
        self.syscnt = Counter(self._cnf, 'SZS', 0)
        self.tmpcnt = Counter(self._cnf, 'SZT', 0)
        return

    def next_nodup(self, flags=0): return self.get_1(flags|db.DB_NEXT_NODUP)
    def prev_nodup(self, flags=0): return self.get_1(flags|db.DB_PREV_NODUP)