def db_count(data_descriptor, session=None):
schema = data_descriptor.getSchema()
if schema < SCHEMA.schema_default_end:
handler = default_db_get(data_descriptor, session)
elif schema in user_handler_map:
handler = user_handler_map[schema]("count", data_descriptor, session)
else:
print "data_function::db_get not support schema ", schema
return None
if handler is None:
return None
try:
amount = handler.processCount()
finally:
handler.cleanup()
return amount
def db_count(data_descriptor, session = None):
schema = data_descriptor.getSchema()
if schema < SCHEMA.schema_default_end:
handler = default_db_get(data_descriptor, session)
elif schema in user_handler_map:
handler = user_handler_map[schema]("count", data_descriptor, session)
else :
print "data_function::db_get not support schema ", schema
return None
if handler is None:
return None
try:
amount = handler.processCount()
finally:
handler.cleanup()
return amount
schema = data_descriptor.getSchema()
data_type = data_descriptor.getDataType()
handler = None
#if session is None:
# session = create_session()
# firstly try the default handler, and if there is no support data
# type found, try to use the user defined handler, this feature can
# allow the the extention of the default schema to extent its datatype,
# and better to give the named of the handler who exttended schema
# a _ext suffix
try_user_defined_handler = True
if schema < SCHEMA.schema_default_end:
try:
handler = default_db_get(data_descriptor, session)
try_user_defined_handler = False
except NoSupportDataType:
try_user_defined_handler = True
if try_user_defined_handler is True:
if schema in user_handler_map:
handler = user_handler_map[schema]("get", data_descriptor, session)
else:
logger.error("data_function::db_get not support schema %s" %
schema)
return None
if handler is None:
return None
result = handler.processQuery()
schema = data_descriptor.getSchema()
data_type = data_descriptor.getDataType()
handler = None
#if session is None:
# session = create_session()
# firstly try the default handler, and if there is no support data
# type found, try to use the user defined handler, this feature can
# allow the the extention of the default schema to extent its datatype,
# and better to give the named of the handler who exttended schema
# a _ext suffix
try_user_defined_handler = True
if schema < SCHEMA.schema_default_end:
try:
handler = default_db_get(data_descriptor, session)
try_user_defined_handler = False
except NoSupportDataType:
try_user_defined_handler = True
if try_user_defined_handler is True:
if schema in user_handler_map:
handler = user_handler_map[schema]("get", data_descriptor, session)
else:
logger.error("data_function::db_get not support schema %s"%schema)
return None
if handler is None:
return None
result = handler.processQuery()