diff options
Diffstat (limited to 'lib/sqlalchemy')
| -rw-r--r-- | lib/sqlalchemy/engine/cursor.py | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/lib/sqlalchemy/engine/cursor.py b/lib/sqlalchemy/engine/cursor.py index ff9dd0d6a..cf77d0835 100644 --- a/lib/sqlalchemy/engine/cursor.py +++ b/lib/sqlalchemy/engine/cursor.py @@ -1201,7 +1201,19 @@ class _NoResultMetaData(ResultMetaData): self._we_dont_return_rows() +class _LegacyNoResultMetaData(_NoResultMetaData): + @property + def keys(self): + util.warn_deprecated_20( + "Calling the .keys() method on a result set that does not return " + "rows is deprecated and will raise ResourceClosedError in " + "SQLAlchemy 2.0.", + ) + return [] + + _NO_RESULT_METADATA = _NoResultMetaData() +_LEGACY_NO_RESULT_METADATA = _LegacyNoResultMetaData() class BaseCursorResult(object): @@ -1259,7 +1271,7 @@ class BaseCursorResult(object): self._set_memoized_attribute("_row_getter", make_row) else: - self._metadata = _NO_RESULT_METADATA + self._metadata = self._no_result_metadata def _init_metadata(self, context, cursor_description): @@ -1763,6 +1775,7 @@ class CursorResult(BaseCursorResult, Result): _cursor_metadata = CursorResultMetaData _cursor_strategy_cls = CursorFetchStrategy + _no_result_metadata = _NO_RESULT_METADATA def _fetchiter_impl(self): fetchone = self.cursor_strategy.fetchone @@ -1838,6 +1851,8 @@ class LegacyCursorResult(CursorResult): _cursor_metadata = LegacyCursorResultMetaData _cursor_strategy_cls = CursorFetchStrategy + _no_result_metadata = _LEGACY_NO_RESULT_METADATA + def close(self): """Close this :class:`_engine.LegacyCursorResult`. |