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remove ridiculous try-finally clause from BaseQuerySet.distinct

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This commit is contained in:
Stefan Wojcik 2016-12-08 23:44:36 -05:00
parent b99985eaf8
commit 756d8b2ac5
1 changed files with 37 additions and 30 deletions
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67
mongoengine/queryset/base.py
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@ -817,39 +817,46 @@ class BaseQuerySet(object):
.. versionchanged:: 0.6 - Improved db_field refrence handling
"""
queryset = self.clone()
try:
field = self._fields_to_dbfields([field]).pop()
finally:
distinct = self._dereference(queryset._cursor.distinct(field), 1,
name=field, instance=self._document)
except LookUpError:
pass
doc_field = self._document._fields.get(field.split('.', 1)[0])
instance = False
# We may need to cast to the correct type eg. ListField(EmbeddedDocumentField)
EmbeddedDocumentField = _import_class('EmbeddedDocumentField')
ListField = _import_class('ListField')
GenericEmbeddedDocumentField = _import_class('GenericEmbeddedDocumentField')
if isinstance(doc_field, ListField):
doc_field = getattr(doc_field, 'field', doc_field)
if isinstance(doc_field, (EmbeddedDocumentField, GenericEmbeddedDocumentField)):
instance = getattr(doc_field, 'document_type', False)
# handle distinct on subdocuments
if '.' in field:
for field_part in field.split('.')[1:]:
# if looping on embedded document, get the document type instance
if instance and isinstance(doc_field, (EmbeddedDocumentField, GenericEmbeddedDocumentField)):
doc_field = instance
# now get the subdocument
doc_field = getattr(doc_field, field_part, doc_field)
# We may need to cast to the correct type eg. ListField(EmbeddedDocumentField)
if isinstance(doc_field, ListField):
doc_field = getattr(doc_field, 'field', doc_field)
if isinstance(doc_field, (EmbeddedDocumentField, GenericEmbeddedDocumentField)):
instance = getattr(doc_field, 'document_type', False)
if instance and isinstance(doc_field, (EmbeddedDocumentField,
GenericEmbeddedDocumentField)):
distinct = [instance(**doc) for doc in distinct]
return distinct
distinct = self._dereference(queryset._cursor.distinct(field), 1,
name=field, instance=self._document)
doc_field = self._document._fields.get(field.split('.', 1)[0])
instance = None
# We may need to cast to the correct type eg. ListField(EmbeddedDocumentField)
EmbeddedDocumentField = _import_class('EmbeddedDocumentField')
ListField = _import_class('ListField')
GenericEmbeddedDocumentField = _import_class('GenericEmbeddedDocumentField')
if isinstance(doc_field, ListField):
doc_field = getattr(doc_field, 'field', doc_field)
if isinstance(doc_field, (EmbeddedDocumentField, GenericEmbeddedDocumentField)):
instance = getattr(doc_field, 'document_type', None)
# handle distinct on subdocuments
if '.' in field:
for field_part in field.split('.')[1:]:
# if looping on embedded document, get the document type instance
if instance and isinstance(doc_field, (EmbeddedDocumentField, GenericEmbeddedDocumentField)):
doc_field = instance
# now get the subdocument
doc_field = getattr(doc_field, field_part, doc_field)
# We may need to cast to the correct type eg. ListField(EmbeddedDocumentField)
if isinstance(doc_field, ListField):
doc_field = getattr(doc_field, 'field', doc_field)
if isinstance(doc_field, (EmbeddedDocumentField, GenericEmbeddedDocumentField)):
instance = getattr(doc_field, 'document_type', None)
if instance and isinstance(doc_field, (EmbeddedDocumentField,
GenericEmbeddedDocumentField)):
distinct = [instance(**doc) for doc in distinct]
return distinct
def only(self, *fields):
"""Load only a subset of this document's fields. ::