Я пытаюсь выполнить пример строкового токенизатора vertica, написанный на python.
Вот ссылка на указанный пример: https://www.vertica.com/docs/9.2.x/HTML/Content/Authoring/ExtendingVertica/UDx/TransformFunctions/Python/ExampleStringTokenizer.htm?TocPath=Extending Vertica | Developing% 20User-Defined%20Extensions% 20 (UDxs) | Transform% 20Functions% 20 (UDTFs) | Python% 20API | _____ 2
Вот так выглядит мой код
import vertica_sdk
class StringTokenizer(vertica_sdk.TransformFunction):
"""
Transform function which tokenizes its inputs.
For each input string, each of the whitespace-separated tokens of that
string is produced as output.
"""
def processPartition(self, server_interface, input, output):
while True:
for token in input.getString(0).split():
output.setString(0, token)
output.next()
if not input.next():
break
class StringTokenizerFactory(vertica_sdk.TransformFunctionFactory):
def getPrototype(self, server_interface, arg_types, return_type):
arg_types.addVarchar()
return_type.addVarchar()
def getReturnType(self, server_interface, arg_types, return_type):
return_type.addColumn(arg_types.getColumnType(0), "tokens")
def createTransformFunction(cls, server_interface):
return StringTokenizer()
Это то, что я получаю как мойвывод при выполнении команды.
create library sampy as '/home/dbadmin/udx/tokenize.py' language 'Python';
вывод
ROLLBACK 2175: An error occurred when loading library file on node v_prmtest_node0001, message:
Failure in UDx RPC call InvokeCheckLibrary(): Error calling setupExecContext() in User Defined Object [] at [/scratch_a/release/svrtar19690/vbuild/vertica/OSS/UDxFence/PythonInterface.cpp:168], error code: 0, message: Error [/scratch_a/release/svrtar19690/vbuild/vertica/OSS/UDxFence/PythonInterface.cpp:204] function ['import']
(Python error type [<class 'AttributeError'>])
Traceback (most recent call last):
File "/home/dbadmin/PRMTEST/v_prmtest_node0001_catalog/Libraries/02d86d505e41731d36151e9e9da31afc00b0000000561680/sampy_02d86d505e41731d36151e9e9da31afc00b0000000561680.py", line 2, in <module>
class StringTokenizer(vertica_sdk.TransformFunction):
AttributeError: module 'vertica_sdk' has no attribute 'TransformFunction'