def unregisterUtility(self, component=None, provided=None, name=u'',
factory=None):
if factory:
if component:
raise TypeError("Can't specify factory and component.")
component = factory()
if provided is None:
if component is None:
raise TypeError("Must specify one of component, factory and "
"provided")
provided = _getUtilityProvided(component)
# If the existing registration is a ComponentPathWrapper, we
# convert the component that is to be unregistered to a wrapper.
# This ensures that our custom comparision methods are called.
if component is not None:
old = self._utility_registrations.get((provided, name))
if old is not None:
if isinstance(old[0], ComponentPathWrapper):
unwrapped_component = Acquisition.aq_base(component)
component = ComponentPathWrapper(unwrapped_component,'')
return super(PersistentComponents, self).unregisterUtility(
component=component, provided=provided, name=name)
def unregisterUtility(self,
component=None,
provided=None,
name=u'',
factory=None):
if factory:
if component:
raise TypeError("Can't specify factory and component.")
component = factory()
if provided is None:
if component is None:
raise TypeError("Must specify one of component, factory and "
"provided")
provided = _getUtilityProvided(component)
# If the existing registration is a ComponentPathWrapper, we
# convert the component that is to be unregistered to a wrapper.
# This ensures that our custom comparision methods are called.
if component is not None:
old = self._utility_registrations.get((provided, name))
if old is not None:
if isinstance(old[0], ComponentPathWrapper):
unwrapped_component = Acquisition.aq_base(component)
component = ComponentPathWrapper(unwrapped_component, '')
return super(PersistentComponents,
self).unregisterUtility(component=component,
provided=provided,
name=name)
def registerUtility(self, component=None, provided=None, name=u'', info=u'',
event=True, factory=None):
if factory:
if component:
raise TypeError("Can't specify factory and component.")
component = factory()
if provided is None:
provided = _getUtilityProvided(component)
reg = self._utility_registrations.get((provided, name))
if reg is not None:
if reg[:2] == (component, info):
# already registered
if isinstance(reg[0], ComponentPathWrapper):
# update path
self.utilities.unsubscribe((), provided, reg[0])
reg[0].path = component.getPhysicalPath()
self.utilities.subscribe((), provided, reg[0])
return
self.unregisterUtility(reg[0], provided, name)
subscribed = False
for ((p, _), data) in self._utility_registrations.iteritems():
if p == provided and data[0] == component:
subscribed = True
break
wrapped_component = component
if getattr(component, 'aq_parent', None) is not None:
# component is acquisition wrapped, so try to store path
if getattr(component, 'getPhysicalPath', None) is None:
raise AttributeError(
'Component %r does not implement getPhysicalPath, '
'so register it unwrapped or implement this method.' %
component)
path = component.getPhysicalPath()
# If the path is relative we can't store it because we
# have nearly no chance to use the path for traversal in
# getUtility.
if path[0] == '':
# We have an absolute path, so we can store it.
wrapped_component = ComponentPathWrapper(
Acquisition.aq_base(component), path)
self._utility_registrations[(provided, name)] = (
wrapped_component, info, factory)
self.utilities.register((), provided, name, wrapped_component)
if not subscribed:
self.utilities.subscribe((), provided, wrapped_component)
if event:
zope.event.notify(zope.component.interfaces.Registered(
UtilityRegistration(
self, provided, name, component, info, factory)
))
def registerUtility(self,
component=None,
provided=None,
name=u'',
info=u'',
event=True,
factory=None):
if factory:
if component:
raise TypeError("Can't specify factory and component.")
component = factory()
if provided is None:
provided = _getUtilityProvided(component)
reg = self._utility_registrations.get((provided, name))
if reg is not None:
if reg[:2] == (component, info):
# already registered
if isinstance(reg[0], ComponentPathWrapper):
# update path
self.utilities.unsubscribe((), provided, reg[0])
reg[0].path = component.getPhysicalPath()
self.utilities.subscribe((), provided, reg[0])
return
self.unregisterUtility(reg[0], provided, name)
subscribed = False
for ((p, _), data) in self._utility_registrations.iteritems():
if p == provided and data[0] == component:
subscribed = True
break
wrapped_component = component
if getattr(component, 'aq_parent', None) is not None:
# component is acquisition wrapped, so try to store path
if getattr(component, 'getPhysicalPath', None) is None:
raise AttributeError(
'Component %r does not implement getPhysicalPath, '
'so register it unwrapped or implement this method.' %
component)
path = component.getPhysicalPath()
# If the path is relative we can't store it because we
# have nearly no chance to use the path for traversal in
# getUtility.
if path[0] == '':
# We have an absolute path, so we can store it.
wrapped_component = ComponentPathWrapper(
Acquisition.aq_base(component), path)
self._utility_registrations[(provided, name)] = (wrapped_component,
info, factory)
self.utilities.register((), provided, name, wrapped_component)
if not subscribed:
self.utilities.subscribe((), provided, wrapped_component)
if event:
zope.event.notify(
zope.component.interfaces.Registered(
UtilityRegistration(self, provided, name, component, info,
factory)))
