/usr/share/pyshared/ZEO/interfaces.py is in python-zodb 1:3.9.7-2.
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#
# Copyright (c) 2006 Zope Foundation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.1 (ZPL). A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
import zope.interface
class StaleCache(object):
"""A ZEO cache is stale and requires verification.
"""
def __init__(self, storage):
self.storage = storage
class IServeable(zope.interface.Interface):
"""Interface provided by storages that can be served by ZEO
"""
def getTid(oid):
"""The last transaction to change an object
Return the transaction id of the last transaction that committed a
change to an object with the given object id.
"""
def tpc_transaction():
"""The current transaction being committed.
If a storage is participating in a two-phase commit, then
return the transaction (object) being committed. Otherwise
return None.
"""
def lastInvalidations(size):
"""Get recent transaction invalidations
This method is optional and is used to get invalidations
performed by the most recent transactions.
An iterable of up to size entries must be returned, where each
entry is a transaction id and a sequence of object-id/empty-string
pairs describing the objects written by the
transaction, in chronological order.
"""
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