relstorage.adapters.oidallocator
– IOIDAllocator implementations¶
IOIDAllocator implementations.
- class AbstractOIDAllocator[source]¶
Bases:
ABC
These objects are intended to be stateless.
They consult an underlying database sequence than increases, and then derive additional OIDs from that sequence.
new_oids
returns a list of those OIDs, with the largest such OID in position 0.
- class AbstractRangedOIDAllocator[source]¶
Bases:
AbstractOIDAllocator
- class AbstractTableOIDAllocator(driver)[source]¶
Bases:
AbstractRangedOIDAllocator
Implements OID allocation using a table, new_oid, with an incrementing column.
- garbage_collect_interval = 100001¶
After this many allocated OIDs should the (unlucky) thread that allocated the one evenly divisible by this number attempt to remove old OIDs. Set to None to disable periodic garbage collection.
- keep_history = None¶
To use bound queries, we need to know whether we’re keeping history. It doesn’t change anything, though.