async def fetch_one(self, query: ClauseElement) -> typing.Optional[typing.Mapping]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
cursor = await self._connection.cursor()
try:
await cursor.execute(query, args)
row = await cursor.fetchone()
if row is None:
return None
metadata = ResultMetaData(context, cursor.description)
return RowProxy(metadata, row, metadata._processors, metadata._keymap)
except psycopg2.InterfaceError as error:
raise exceptions.InterfaceError(str(query), None, error) from error
except psycopg2.DataError as error:
raise exceptions.DataError(str(query), None, error) from error
except psycopg2.OperationalError as error:
raise exceptions.OperationalError(str(query), None, error) from error
except psycopg2.IntegrityError as error:
raise exceptions.IntegrityError(str(query), None, error) from error
except psycopg2.InternalError as error:
raise exceptions.InternalError(str(query), None, error) from error
except psycopg2.ProgrammingError as error:
raise exceptions.ProgrammingError(str(query), None, error) from error
except psycopg2.NotSupportedError as error:
raise exceptions.NotSupportedError(str(query), None, error) from error
except psycopg2.DatabaseError as error:
raise exceptions.DatabaseError(str(query), None, error) from error
finally:
cursor.close()
async def iterate(
self, query: ClauseElement
) -> typing.AsyncGenerator[typing.Any, None]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
cursor = await self._connection.cursor()
try:
await cursor.execute(query, args)
metadata = ResultMetaData(context, cursor.description)
async for row in cursor:
yield RowProxy(metadata, row, metadata._processors, metadata._keymap)
except psycopg2.InterfaceError as error:
raise exceptions.InterfaceError(str(query), None, error) from error
except psycopg2.DataError as error:
raise exceptions.DataError(str(query), None, error) from error
except psycopg2.OperationalError as error:
raise exceptions.OperationalError(str(query), None, error) from error
except psycopg2.IntegrityError as error:
raise exceptions.IntegrityError(str(query), None, error) from error
except psycopg2.InternalError as error:
raise exceptions.InternalError(str(query), None, error) from error
except psycopg2.ProgrammingError as error:
raise exceptions.ProgrammingError(str(query), None, error) from error
except psycopg2.NotSupportedError as error:
raise exceptions.NotSupportedError(str(query), None, error) from error
except psycopg2.DatabaseError as error:
raise exceptions.DatabaseError(str(query), None, error) from error
finally:
cursor.close()
async def fetch_all(self,
query: ClauseElement) -> typing.List[typing.Mapping]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
try:
async with self._connection.execute(query, args) as cursor:
rows = await cursor.fetchall()
metadata = ResultMetaData(context, cursor.description)
return [
RowProxy(metadata, row, metadata._processors,
metadata._keymap) for row in rows
]
except sqlite3.InterfaceError as error:
raise exceptions.InterfaceError(str(query), None, error) from error
except sqlite3.DataError as error:
raise exceptions.DataError(str(query), None, error) from error
except sqlite3.OperationalError as error:
raise exceptions.OperationalError(str(query), None,
error) from error
except sqlite3.IntegrityError as error:
raise exceptions.IntegrityError(str(query), None, error) from error
except sqlite3.InternalError as error:
raise exceptions.InternalError(str(query), None, error) from error
except sqlite3.ProgrammingError as error:
raise exceptions.ProgrammingError(str(query), None,
error) from error
except sqlite3.NotSupportedError as error:
raise exceptions.NotSupportedError(str(query), None,
error) from error
except sqlite3.DatabaseError as error:
raise exceptions.DatabaseError(str(query), None, error) from error
def _load(self):
if self.__delegator is not None:
return
if not self.__cursor.description:
raise Exception(
"Cursor must be loaded before call TrinoResultMetaData")
self.__delegator = ResultMetaData(self.__parent,
self.__cursor.description)
async def fetch_one(self, query: ClauseElement) -> RowProxy:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
async with self._connection.execute(query, args) as cursor:
row = await cursor.fetchone()
metadata = ResultMetaData(context, cursor.description)
return RowProxy(metadata, row, metadata._processors, metadata._keymap)
async def iterate(
self, query: ClauseElement
) -> typing.AsyncGenerator[typing.Any, None]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
async with self._connection.execute(query, args) as cursor:
metadata = ResultMetaData(context, cursor.description)
async for row in cursor:
yield RowProxy(metadata, row, metadata._processors, metadata._keymap)
async def fetch_all(self, query: ClauseElement) -> typing.List[typing.Mapping]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
async with self._connection.execute(query, args) as cursor:
rows = await cursor.fetchall()
metadata = ResultMetaData(context, cursor.description)
return [
RowProxy(metadata, row, metadata._processors, metadata._keymap)
for row in rows
]
async def fetch_one(self, query: ClauseElement) -> typing.Optional[typing.Mapping]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
cursor = await self._connection.cursor()
try:
await cursor.execute(query, args)
row = await cursor.fetchone()
if row is None:
return None
metadata = ResultMetaData(context, cursor.description)
return RowProxy(metadata, row, metadata._processors, metadata._keymap)
finally:
await cursor.close()
async def fetch_one(self, query: ClauseElement) -> Optional[RowProxy]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
async with await self._connection.cursor() as cursor:
if args:
await cursor.execute(query, *args)
else:
await cursor.execute(query)
row = await cursor.fetchone()
if row is None:
return None
metadata = ResultMetaData(context, cursor.description)
return RowProxy(metadata, row, metadata._processors,
metadata._keymap)
async def fetch_all(self, query: Union[ClauseElement,
str]) -> List[RowProxy]:
assert self._connection is not None, "Connection is not acquired"
query, args, context = self._compile(query)
async with self._connection.cursor() as cursor:
if args:
await cursor.execute(query, *args)
else:
await cursor.execute(query)
rows = await cursor.fetchall()
metadata: ResultMetaData = ResultMetaData(context,
cursor.description)
return [
RowProxy(metadata, row, metadata._processors, metadata._keymap)
for row in rows
]