def process_attribute_restrictions(cls, attr: Attr):
"""Sanitize attribute required flag by comparing the min/max
occurrences restrictions."""
restrictions = attr.restrictions
min_occurs = restrictions.min_occurs or 0
max_occurs = restrictions.max_occurs or 0
if attr.is_attribute:
restrictions.min_occurs = None
restrictions.max_occurs = None
elif attr.is_tokens:
restrictions.required = None
if max_occurs <= 1:
restrictions.min_occurs = None
restrictions.max_occurs = None
elif attr.xml_type is None or min_occurs == max_occurs == 1:
restrictions.required = True
restrictions.min_occurs = None
restrictions.max_occurs = None
elif min_occurs == 0 and max_occurs < 2:
restrictions.required = None
restrictions.min_occurs = None
restrictions.max_occurs = None
attr.default = None
attr.fixed = False
else: # max_occurs > 1
restrictions.min_occurs = min_occurs
restrictions.required = None
attr.fixed = False
if attr.default or attr.fixed or attr.restrictions.nillable:
restrictions.required = None
def process_attribute_default(self, target: Class, attr: Attr):
"""
Sanitize attribute default value.
Cases:
1. List fields can not have a fixed value.
2. Optional fields or xsi:type can not have a default or fixed value.
3. Convert string literal default value for enum fields.
"""
if attr.is_list:
attr.fixed = False
if attr.is_optional or attr.is_xsi_type:
attr.fixed = False
attr.default = None
if attr.default and not attr.is_enumeration:
self.process_attribute_default_enum(target, attr)