def get_test_extractor(): return CtableExtractor(SqlExtractMapping.get_db(), InMemoryBackend())
def get_extractor(backend_name): return CtableExtractor(SqlExtractMapping.get_db(), get_backend(backend_name))
def get_test_extractor(): return CtableExtractor(SqlExtractMapping.get_db(), InMemoryBackend())
def get_extractor(backend_name): return CtableExtractor(SqlExtractMapping.get_db(), get_backend(backend_name))