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Fix tests and add support for newer python by dseomn · Pull Request #191 · google/python-spanner-orm · GitHub

/ python-spanner-orm Public

Fix tests and add support for newer python #191

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dseomn merged 1 commit into from
Sep 19, 2024
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Fix tests and add support for newer python #191

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1 change: 1 addition & 0 deletions .github/workflows/test.yaml
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@ jobs:
- '3.8'
- '3.9'
- '3.10'
- '3.11'
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
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14 changes: 8 additions & 6 deletions spanner_orm/query.py
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Expand Up @@ -14,13 +14,15 @@
"""Helps build SQL for complex Spanner queries."""

import abc
from typing import Any, Dict, Iterable, List, Sequence, Tuple, Type
from typing import Any, Dict, Generic, Iterable, List, Sequence, Tuple, Type, TypeVar

from spanner_orm import condition
from spanner_orm import error

ResultType = TypeVar('ResultType')

class SpannerQuery(abc.ABC):

class SpannerQuery(abc.ABC, Generic[ResultType]):
"""Helps build SQL for complex Spanner queries."""

def __init__(self, model: Type[Any],
Expand All @@ -46,7 +48,7 @@ def types(self) -> Dict[str, Any]:
return self._types

@abc.abstractmethod
def process_results(self, results: List[Sequence[Any]]) -> None:
def process_results(self, results: List[Sequence[Any]]) -> ResultType:
pass

def _segments(self,
Expand Down Expand Up @@ -133,7 +135,7 @@ def _limit(self) -> Tuple[str, Dict[str, Any], Dict[str, Any]]:
return (sql, parameters, types)


class CountQuery(SpannerQuery):
class CountQuery(SpannerQuery[int]):
"""Handles COUNT Spanner queries."""

def __init__(self, model: Type[Any],
Expand All @@ -151,7 +153,7 @@ def process_results(self, results: List[Sequence[Any]]) -> int:
return int(results[0][0])


class SelectQuery(SpannerQuery):
class SelectQuery(SpannerQuery[List[Type[Any]]]):
"""Handles SELECT Spanner queries."""

def __init__(self, model: Type[Any],
Expand Down Expand Up @@ -188,7 +190,7 @@ def _select(self) -> Tuple[str, Dict[str, Any], Dict[str, Any]]:
def process_results(self, results: List[Sequence[Any]]) -> List[Type[Any]]:
return [self._process_row(result) for result in results]

def _process_row(self, row: List[Any]) -> Type[Any]:
def _process_row(self, row: Sequence[Any]) -> Type[Any]:
"""Parses a row of results from a Spanner query based on the conditions."""
values = dict(zip(self._model.columns, row))
join_values = row[len(self._model.columns):]
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