/usr/share/pyshared/ZODB/scripts/referrers.py is in python-zodb 1:3.9.7-2.
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#
# Copyright (c) 2005 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.
#
##############################################################################
"""Compute a table of object id referrers
$Id: referrers.py 113733 2010-06-21 15:32:58Z ctheune $
"""
from ZODB.serialize import referencesf
def referrers(storage):
result = {}
for transaction in storage.iterator():
for record in transaction:
for oid in referencesf(record.data):
result.setdefault(oid, []).append((record.oid, record.tid))
return result
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