def step_callback(context, argc, c_params):
res = _lib.sqlite3_aggregate_context(context,
_ffi.sizeof("size_t"))
aggregate_ptr = _ffi.cast("size_t[1]", res)
if not aggregate_ptr[0]:
try:
aggregate = cls()
except Exception:
msg = (b"user-defined aggregate's '__init__' "
b"method raised error")
_lib.sqlite3_result_error(context, msg, len(msg))
return
aggregate_id = id(aggregate)
self.__aggregate_instances[aggregate_id] = aggregate
aggregate_ptr[0] = aggregate_id
else:
aggregate = self.__aggregate_instances[aggregate_ptr[0]]
params = _convert_params(context, argc, c_params)
try:
aggregate.step(*params)
except Exception:
msg = (b"user-defined aggregate's 'step' "
b"method raised error")
_lib.sqlite3_result_error(context, msg, len(msg))
def step_callback(context, argc, c_params):
res = _lib.sqlite3_aggregate_context(context,
_ffi.sizeof("size_t"))
aggregate_ptr = _ffi.cast("size_t[1]", res)
if not aggregate_ptr[0]:
try:
aggregate = cls()
except Exception:
msg = (b"user-defined aggregate's '__init__' "
b"method raised error")
_lib.sqlite3_result_error(context, msg, len(msg))
return
aggregate_id = id(aggregate)
self.__aggregate_instances[aggregate_id] = aggregate
aggregate_ptr[0] = aggregate_id
else:
aggregate = self.__aggregate_instances[aggregate_ptr[0]]
params = _convert_params(context, argc, c_params)
try:
aggregate.step(*params)
except Exception:
msg = (b"user-defined aggregate's 'step' "
b"method raised error")
_lib.sqlite3_result_error(context, msg, len(msg))
def final_callback(context):
res = _lib.sqlite3_aggregate_context(context, _ffi.sizeof("size_t"))
aggregate_ptr = _ffi.cast("size_t[1]", res)
if aggregate_ptr[0]:
aggregate = self.__aggregate_instances[aggregate_ptr[0]]
try:
val = aggregate.finalize()
except Exception:
msg = b"user-defined aggregate's 'finalize' " b"method raised error"
_lib.sqlite3_result_error(context, msg, len(msg))
else:
_convert_result(context, val)
finally:
del self.__aggregate_instances[aggregate_ptr[0]]
def final_callback(context):
res = _lib.sqlite3_aggregate_context(context,
_ffi.sizeof("size_t"))
aggregate_ptr = _ffi.cast("size_t[1]", res)
if aggregate_ptr[0]:
aggregate = self.__aggregate_instances[aggregate_ptr[0]]
try:
val = aggregate.finalize()
except Exception:
msg = (b"user-defined aggregate's 'finalize' "
b"method raised error")
_lib.sqlite3_result_error(context, msg, len(msg))
else:
_convert_result(context, val)
finally:
del self.__aggregate_instances[aggregate_ptr[0]]