36 lines
1.3 KiB
Python
36 lines
1.3 KiB
Python
_class_registry_cache = {}
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def _import_class(cls_name):
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"""Cached mechanism for imports"""
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if cls_name in _class_registry_cache:
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return _class_registry_cache.get(cls_name)
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doc_classes = ('Document', 'DynamicEmbeddedDocument', 'EmbeddedDocument',
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'MapReduceDocument')
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field_classes = ('DictField', 'DynamicField', 'EmbeddedDocumentField',
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'FileField', 'GenericReferenceField',
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'GenericEmbeddedDocumentField', 'GeoPointField',
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'ReferenceField', 'StringField')
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queryset_classes = ('OperationError',)
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deref_classes = ('DeReference',)
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if cls_name in doc_classes:
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from mongoengine import document as module
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import_classes = doc_classes
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elif cls_name in field_classes:
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from mongoengine import fields as module
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import_classes = field_classes
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elif cls_name in queryset_classes:
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from mongoengine import queryset as module
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import_classes = queryset_classes
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elif cls_name in deref_classes:
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from mongoengine import dereference as module
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import_classes = deref_classes
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else:
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raise ValueError('No import set for: ' % cls_name)
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for cls in import_classes:
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_class_registry_cache[cls] = getattr(module, cls)
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return _class_registry_cache.get(cls_name) |