def test_repeated_subtypes_lookup(self):
fti = DexterityFTI(u"testtype")
self.mock_utility(fti, IDexterityFTI, name=u"testtype")
# Mock a test behavior
class ITestSchema(Interface):
pass
class ITestMarker(Interface):
pass
fti.behaviors = [ITestSchema.__identifier__]
from plone.behavior.registration import BehaviorRegistration
registration = BehaviorRegistration(
title=u"Test Behavior",
description=u"Provides test behavior",
interface=ITestSchema,
marker=ITestMarker,
factory=None
)
from plone.behavior.interfaces import IBehavior
self.mock_utility(
registration,
IBehavior,
ITestSchema.__identifier__
)
s1 = SCHEMA_CACHE.subtypes(u"testtype")
s2 = SCHEMA_CACHE.subtypes(u"testtype")
self.assertTrue(s1[0] is s2[0] is ITestMarker)
def test_repeated_subtypes_lookup(self):
fti = DexterityFTI(u"testtype")
self.mock_utility(fti, IDexterityFTI, name=u"testtype")
# Mock a test behavior
class ITestSchema(Interface):
pass
class ITestMarker(Interface):
pass
fti.behaviors = [ITestSchema.__identifier__]
from plone.behavior.registration import BehaviorRegistration
registration = BehaviorRegistration(
title=u"Test Behavior",
description=u"Provides test behavior",
interface=ITestSchema,
marker=ITestMarker,
factory=None
)
from plone.behavior.interfaces import IBehavior
self.mock_utility(
registration,
IBehavior,
ITestSchema.__identifier__
)
s1 = SCHEMA_CACHE.subtypes(u"testtype")
s2 = SCHEMA_CACHE.subtypes(u"testtype")
self.assertTrue(s1[0] is s2[0] is ITestMarker)
def __getattr__(self, name):
# python basics: __getattr__ is only invoked if the attribute wasn't
# found by __getattribute__
#
# optimization: sometimes we're asked for special attributes
# such as __conform__ that we can disregard (because we
# wouldn't be in here if the class had such an attribute
# defined).
if name.startswith('__'):
raise AttributeError(name)
# attribute was not found; try to look it up in the schema and return
# a default
value = _default_from_schema(
self,
SCHEMA_CACHE.get(self.portal_type),
name
)
if value is not _marker:
return value
# do the same for each subtype
for schema in SCHEMA_CACHE.subtypes(self.portal_type):
value = _default_from_schema(self, schema, name)
if value is not _marker:
return value
raise AttributeError(name)
def __get__(self, inst, cls=None):
# We're looking at a class - fall back on default
if inst is None:
return getObjectSpecification(cls)
# Find the data we need to know if our cache needs to be invalidated
direct_spec = getattr(inst, '__provides__', None)
portal_type = getattr(inst, 'portal_type', None)
spec = direct_spec
# If the instance doesn't have a __provides__ attribute, get the
# interfaces implied by the class as a starting point.
if spec is None:
spec = implementedBy(cls)
# If the instance has no portal type, then we're done.
if portal_type is None:
return spec
fti = queryUtility(IDexterityFTI, name=portal_type)
if fti is None:
return spec
schema = SCHEMA_CACHE.get(portal_type)
subtypes = SCHEMA_CACHE.subtypes(portal_type)
# Find the cached value. This calculation is expensive and called
# hundreds of times during each request, so we require a fast cache
cache = getattr(inst, '_v__providedBy__', None)
updated = inst._p_mtime, schema, subtypes, direct_spec
# See if we have a valid cache. Reasons to do this include:
#
# - The schema was modified.
# - The subtypes were modified.
# - The instance was modified and persisted since the cache was built.
# - The instance has a different direct specification.
if cache is not None:
cached_mtime, cached_schema, cached_subtypes, \
cached_direct_spec, cached_spec = cache
if cache[:-1] == updated:
return cached_spec
dynamically_provided = [] if schema is None else [schema]
dynamically_provided.extend(subtypes)
# If we have neither a schema, nor a subtype, then we're also done.
if not dynamically_provided:
return spec
dynamically_provided.append(spec)
spec = Implements(*dynamically_provided)
inst._v__providedBy__ = updated + (spec, )
return spec
def __get__(self, inst, cls=None):
# We're looking at a class - fall back on default
if inst is None:
return getObjectSpecification(cls)
# Find the data we need to know if our cache needs to be invalidated
direct_spec = getattr(inst, '__provides__', None)
portal_type = getattr(inst, 'portal_type', None)
spec = direct_spec
# If the instance doesn't have a __provides__ attribute, get the
# interfaces implied by the class as a starting point.
if spec is None:
spec = implementedBy(cls)
# If the instance has no portal type, then we're done.
if portal_type is None:
return spec
fti = queryUtility(IDexterityFTI, name=portal_type)
if fti is None:
return spec
schema = SCHEMA_CACHE.get(portal_type)
subtypes = SCHEMA_CACHE.subtypes(portal_type)
# Find the cached value. This calculation is expensive and called
# hundreds of times during each request, so we require a fast cache
cache = getattr(inst, '_v__providedBy__', None)
updated = inst._p_mtime, schema, subtypes, direct_spec
# See if we have a valid cache. Reasons to do this include:
#
# - The schema was modified.
# - The subtypes were modified.
# - The instance was modified and persisted since the cache was built.
# - The instance has a different direct specification.
if cache is not None:
cached_mtime, cached_schema, cached_subtypes, \
cached_direct_spec, cached_spec = cache
if cache[:-1] == updated:
return cached_spec
dynamically_provided = [] if schema is None else [schema]
dynamically_provided.extend(subtypes)
# If we have neither a schema, nor a subtype, then we're also done.
if not dynamically_provided:
return spec
dynamically_provided.append(spec)
spec = Implements(*dynamically_provided)
inst._v__providedBy__ = updated + (spec, )
return spec
def __getattr__(self, name):
# attribute was not found; try to look it up in the schema and return
# a default
schema = SCHEMA_CACHE.get(self.portal_type)
if schema is not None:
field = schema.get(name, None)
if field is not None:
return deepcopy(field.default)
# do the same for each subtype
for schema in SCHEMA_CACHE.subtypes(self.portal_type):
field = schema.get(name, None)
if field is not None:
return deepcopy(field.default)
raise AttributeError(name)
def __getattr__(self, name):
# attribute was not found; try to look it up in the schema and return
# a default
schema = SCHEMA_CACHE.get(self.portal_type)
if schema is not None:
field = schema.get(name, None)
if field is not None:
return deepcopy(field.default)
# do the same for each subtype
for schema in SCHEMA_CACHE.subtypes(self.portal_type):
field = schema.get(name, None)
if field is not None:
return deepcopy(field.default)
raise AttributeError(name)
def __getattr__(self, name):
# optimization: sometimes we're asked for special attributes
# such as __conform__ that we can disregard (because we
# wouldn't be in here if the class had such an attribute
# defined).
if name.startswith('__'):
raise AttributeError(name)
# attribute was not found; try to look it up in the schema and return
# a default
schema = SCHEMA_CACHE.get(self.portal_type)
if schema is not None:
field = schema.get(name, None)
if field is not None:
return deepcopy(field.default)
# do the same for each subtype
for schema in SCHEMA_CACHE.subtypes(self.portal_type):
field = schema.get(name, None)
if field is not None:
return deepcopy(field.default)
raise AttributeError(name)
def __getattr__(self, name):
# optimization: sometimes we're asked for special attributes
# such as __conform__ that we can disregard (because we
# wouldn't be in here if the class had such an attribute
# defined).
if name.startswith('__'):
raise AttributeError(name)
# attribute was not found; try to look it up in the schema and return
# a default
schema = SCHEMA_CACHE.get(self.portal_type)
if schema is not None:
field = schema.get(name, None)
if field is not None:
return deepcopy(field.default)
# do the same for each subtype
for schema in SCHEMA_CACHE.subtypes(self.portal_type):
field = schema.get(name, None)
if field is not None:
return deepcopy(field.default)
raise AttributeError(name)
def __get__(self, inst, cls=None):
# We're looking at a class - fall back on default
if inst is None:
return getObjectSpecification(cls)
# Find the cached value. This calculation is expensive and called
# hundreds of times during each request, so we require a fast cache
cache = getattr(inst, '_v__providedBy__', None)
# Find the data we need to know if our cache needs to be invalidated
direct_spec = getattr(inst, '__provides__', None)
portal_type = getattr(inst, 'portal_type', None)
fti_counter = -1
if portal_type is not None:
fti_counter = SCHEMA_CACHE.counter(portal_type)
# See if we have a valid cache. Reasons to do this include:
#
# - We don't have a portal_type yet, so we can't have found the schema
# - The FTI was modified, and the schema cache invalidated globally.
# The fti_counter will have advanced.
# - The instance was modified and persisted since the cache was built.
# - The instance now has a different __provides__, which means that someone
# called directlyProvides/alsoProvides on it.
if cache is not None and portal_type is not None:
cached_mtime, cached_fti_counter, cached_direct_spec, cached_spec = cache
if inst._p_mtime == cached_mtime and \
fti_counter == cached_fti_counter and \
direct_spec is cached_direct_spec:
return cached_spec
# We don't have a cache, so we need to build a new spec and maybe cache it
spec = direct_spec
# If the instance doesn't have a __provides__ attribute, get the
# interfaces implied by the class as a starting point.
if spec is None:
spec = implementedBy(cls)
# Add the schema from the FTI and behavior subtypes
dynamically_provided = []
if portal_type is not None:
schema = SCHEMA_CACHE.get(portal_type)
if schema is not None:
dynamically_provided.append(schema)
subtypes = SCHEMA_CACHE.subtypes(portal_type)
if subtypes:
dynamically_provided.extend(subtypes)
# If we have any dynamically provided interface, prepend them to the spec
# and cache. We can't cache until we have at least the schema, because
# it's possible that we were called before traversal and so could not
# find the schema yet.
if dynamically_provided:
dynamically_provided.append(spec)
spec = Implements(*dynamically_provided)
inst._v__providedBy__ = inst._p_mtime, SCHEMA_CACHE.counter(
portal_type), direct_spec, spec
return spec
def __get__(self, inst, cls=None):
# We're looking at a class - fall back on default
if inst is None:
return getObjectSpecification(cls)
# Find the cached value. This calculation is expensive and called
# hundreds of times during each request, so we require a fast cache
cache = getattr(inst, '_v__providedBy__', None)
# Find the data we need to know if our cache needs to be invalidated
direct_spec = getattr(inst, '__provides__', None)
portal_type = getattr(inst, 'portal_type', None)
fti_counter = -1
if portal_type is not None:
fti_counter = SCHEMA_CACHE.counter(portal_type)
# See if we have a valid cache. Reasons to do this include:
#
# - We don't have a portal_type yet, so we can't have found the schema
# - The FTI was modified, and the schema cache invalidated globally.
# The fti_counter will have advanced.
# - The instance was modified and persisted since the cache was built.
# - The instance now has a different __provides__, which means that someone
# called directlyProvides/alsoProvides on it.
if cache is not None and portal_type is not None:
cached_mtime, cached_fti_counter, cached_direct_spec, cached_spec = cache
if inst._p_mtime == cached_mtime and \
fti_counter == cached_fti_counter and \
direct_spec is cached_direct_spec:
return cached_spec
# We don't have a cache, so we need to build a new spec and maybe cache it
spec = direct_spec
# If the instance doesn't have a __provides__ attribute, get the
# interfaces implied by the class as a starting point.
if spec is None:
spec = implementedBy(cls)
# Add the schema from the FTI and behavior subtypes
dynamically_provided = []
if portal_type is not None:
schema = SCHEMA_CACHE.get(portal_type)
if schema is not None:
dynamically_provided.append(schema)
subtypes = SCHEMA_CACHE.subtypes(portal_type)
if subtypes:
dynamically_provided.extend(subtypes)
# If we have any dynamically provided interface, prepend them to the spec
# and cache. We can't cache until we have at least the schema, because
# it's possible that we were called before traversal and so could not
# find the schema yet.
if dynamically_provided:
dynamically_provided.append(spec)
spec = Implements(*dynamically_provided)
inst._v__providedBy__ = inst._p_mtime, SCHEMA_CACHE.counter(portal_type), direct_spec, spec
return spec
