zlmdb._schema

Classes

Schema	ZLMDB database schema definition.
Slot	LMDB database slot. A slot is defined just by the convention of using

Module Contents

class Schema

Bases: object

ZLMDB database schema definition.

SLOT_DATA_EMPTY = 0

Database slot is empty (unused, not necessarily zero’ed, but uninitialized).

SLOT_DATA_INDEX = 5

FIXME.

SLOT_DATA_MATERIALIZATION = 7

FIXME.

SLOT_DATA_METADATA = 1

FIXME.

SLOT_DATA_REPLICATION = 6

FIXME.

SLOT_DATA_SEQUENCE = 3

FIXME.

SLOT_DATA_TABLE = 4

Database slot contains a persistent map, for example a map of type OID to Pickle.

SLOT_DATA_TYPE = 2

FIXME.

_index_to_slot

_name_to_slot

slot(slot_index, marshal=None, unmarshal=None, build=None, cast=None, compress=False)

Decorator for use on classes derived from zlmdb.PersistentMap. The decorator define slots in a LMDB database schema based on persistent maps, and slot configuration.

Parameters:

• slot_index

• marshal

• unmarshal

• build

• cast

• compress

Returns:

class Slot(slot, name, pmap)

Bases: object

LMDB database slot. A slot is defined just by the convention of using the first 2 bytes of keys in a LMDB database as the “slot index”.

The 2 bytes are interpreted as an uint16 in big endian byte order.

name

pmap

slot