def connectionOfPersistent(obj):
""" zope2 cxn fetcher for wrapped items """
if not (IAcquirer.providedBy(obj) or hasattr(obj, '__parent__')):
return getattr(obj, '_p_jar', None)
for parent in aq_iter(obj):
conn = getattr(parent, '_p_jar', None)
if conn is not None:
return conn
def __init__(self, wrapped_obj):
# Detect a circular containment / an infinite Loop with aq_iter
try:
[obj for obj in aq_iter(wrapped_obj, error=RuntimeError)]
except RuntimeError:
raise NotYet(wrapped_obj)
# make sure our object is wrapped by containment only
try:
self.path = '/'.join(wrapped_obj.getPhysicalPath())
except AttributeError:
self.path = None
# If the path ends with /, it means the object had an empty id.
# This means it's not yet added to the container, and so we have
# to defer.
if self.path is not None and self.path.endswith('/'):
raise NotYet(wrapped_obj)
self.object = aq_base(wrapped_obj)
connection = IConnection(wrapped_obj, None)
if not getattr(self.object, '_p_oid', None):
if connection is None:
raise NotYet(wrapped_obj)
connection.add(self.object)
try:
root = get_root(wrapped_obj)
except AttributeError:
# If the object is unwrapped we can try to use the Site from the
# threadlocal as our acquisition context, hopefully it's not
# something odd.
root = get_root(getSite())
self.root_oid = root._p_oid
self.root_dbname = IConnection(root).db().database_name
self.oid = self.object._p_oid
self.dbname = connection.db().database_name