Use latest zope.sqlalchemy package
session / transaction registration modified per upstream changes, but previous logic kept to support older versions of zope.sqlalchemy - for now, although probably should require minimum version soon?
This commit is contained in:
Lance Edgar
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6
setup.py
6
setup.py
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@ -62,11 +62,6 @@ requires = [
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#
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# package # low high
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# TODO: previously was capping this to pre-1.0 although i'm not sure why.
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# however the 1.2 release has some breaking changes which require refactor.
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# cf. https://pypi.org/project/zope.sqlalchemy/#id3
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'zope.sqlalchemy<1.2', # 0.7 1.1
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# TODO: apparently they jumped from 0.1 to 0.9 and that broke us...
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# (0.1 was released on 2014-09-14 and then 0.9 came out on 2018-09-27)
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# (i've cached 0.1 at pypi.rattailproject.org just in case it disappears)
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@ -106,6 +101,7 @@ requires = [
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'waitress', # 0.8.1
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'WebHelpers2', # 2.0
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'WTForms', # 2.1
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'zope.sqlalchemy', # 0.7 2.0
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]
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@ -2,7 +2,7 @@
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################################################################################
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#
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# Rattail -- Retail Software Framework
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# Copyright © 2010-2021 Lance Edgar
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# Copyright © 2010-2023 Lance Edgar
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#
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# This file is part of Rattail.
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#
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@ -24,8 +24,6 @@
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Database Stuff
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"""
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from __future__ import unicode_literals, absolute_import
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import sqlalchemy as sa
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from zope.sqlalchemy import datamanager
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import sqlalchemy_continuum as continuum
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@ -111,20 +109,51 @@ def join_transaction(session, initial_state=datamanager.STATUS_ACTIVE, transacti
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DataManager(session, initial_state, transaction_manager, keep_session=keep_session)
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class ZopeTransactionExtension(datamanager.ZopeTransactionExtension):
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"""Record that a flush has occurred on a session's connection. This allows
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the DataManager to rollback rather than commit on read only transactions.
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if zope_sqlalchemy_version_parsed >= parse_version('1.2'): # 1.2+
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.. note::
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This class is copied from upstream, and tweaked so that our custom
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:func:`join_transaction()` will be used.
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"""
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class ZopeTransactionEvents(datamanager.ZopeTransactionEvents):
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"""
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Record that a flush has occurred on a session's
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connection. This allows the DataManager to rollback rather
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than commit on read only transactions.
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def after_begin(self, session, transaction, connection):
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join_transaction(session, self.initial_state, self.transaction_manager, self.keep_session)
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.. note::
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This class is copied from upstream, and tweaked so that our
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custom :func:`join_transaction()` will be used.
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"""
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def after_attach(self, session, instance):
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join_transaction(session, self.initial_state, self.transaction_manager, self.keep_session)
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def after_begin(self, session, transaction, connection):
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join_transaction(session, self.initial_state,
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self.transaction_manager, self.keep_session)
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def after_attach(self, session, instance):
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join_transaction(session, self.initial_state,
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self.transaction_manager, self.keep_session)
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def join_transaction(self, session):
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join_transaction(session, self.initial_state,
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self.transaction_manager, self.keep_session)
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else: # pre-1.2
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class ZopeTransactionExtension(datamanager.ZopeTransactionExtension):
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"""
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Record that a flush has occurred on a session's
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connection. This allows the DataManager to rollback rather
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than commit on read only transactions.
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.. note::
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This class is copied from upstream, and tweaked so that our
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custom :func:`join_transaction()` will be used.
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"""
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def after_begin(self, session, transaction, connection):
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join_transaction(session, self.initial_state,
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self.transaction_manager, self.keep_session)
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def after_attach(self, session, instance):
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join_transaction(session, self.initial_state,
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self.transaction_manager, self.keep_session)
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def register(session, initial_state=datamanager.STATUS_ACTIVE,
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@ -147,11 +176,21 @@ def register(session, initial_state=datamanager.STATUS_ACTIVE,
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"""
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from sqlalchemy import event
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ext = ZopeTransactionExtension(
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initial_state=initial_state,
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transaction_manager=transaction_manager,
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keep_session=keep_session,
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)
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if zope_sqlalchemy_version_parsed >= parse_version('1.2'): # 1.2+
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ext = ZopeTransactionEvents(
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initial_state=initial_state,
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transaction_manager=transaction_manager,
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keep_session=keep_session,
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)
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else: # pre-1.2
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ext = ZopeTransactionExtension(
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initial_state=initial_state,
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transaction_manager=transaction_manager,
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keep_session=keep_session,
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)
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event.listen(session, "after_begin", ext.after_begin)
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event.listen(session, "after_attach", ext.after_attach)
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@ -160,6 +199,10 @@ def register(session, initial_state=datamanager.STATUS_ACTIVE,
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event.listen(session, "after_bulk_delete", ext.after_bulk_delete)
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event.listen(session, "before_commit", ext.before_commit)
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if zope_sqlalchemy_version_parsed >= parse_version('1.5'): # 1.5+
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if datamanager.SA_GE_14:
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event.listen(session, "do_orm_execute", ext.do_orm_execute)
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register(Session)
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register(TempmonSession)
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