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__author__ = "roland"
class Filter:
def __init__(self):
pass
def __call__(self, *args, **kwargs):
pass
class AllowDescriptor(Filter):
def __init__(self, allow):
"""
:param allow: List of allowed descriptors
:return:
"""
super().__init__()
self.allow = allow
def __call__(self, entity_descriptor):
# get descriptors
_all = []
for desc in list(entity_descriptor.keys()):
if desc.endswith("_descriptor"):
typ, _ = desc.rsplit("_", 1)
if typ in self.allow:
_all.append(typ)
else:
del entity_descriptor[desc]
if not _all:
return None
else:
return entity_descriptor
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