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from django.core import checks
from django.db.backends.base.validation import BaseDatabaseValidation
class DatabaseValidation(BaseDatabaseValidation):
def check_field_type(self, field, field_type):
"""Oracle doesn't support a database index on some data types."""
errors = []
if field.db_index and field_type.lower() in self.connection._limited_data_types:
errors.append(
checks.Warning(
'Oracle does not support a database index on %s columns.'
% field_type,
hint=(
"An index won't be created. Silence this warning if "
"you don't care about it."
),
obj=field,
id='fields.W162',
)
)
return errors
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