Merge pull request #753 from kurtmckee/rm-sqlalchemy-1.3-support

Drop support for sqlalchemy 1.3

Author: kurtmckee

.github/workflows/test.yaml

@@ -13,10 +13,6 @@ jobs:
           - '3.12'
         tox_env: ['sqlalchemy14', 'sqlalchemy2']
         include:
-          # Test against Python 3.9 and sqlalchemy 1.3
-          - os: 'ubuntu-20.04'
-            python-version: '3.9'
-            tox_env: 'sqlalchemy13'
           # Test against Python 3.9 and sqlalchemy 1.4
           - os: 'ubuntu-20.04'
             python-version: '3.9'

CHANGES.rst

@@ -7,6 +7,7 @@ Unreleased changes
 ^^^^^^^^^^^^^^^^^^
 
 - Drop support for Python 3.7 and 3.8.
+- Drop support for sqlalchemy 1.3.
 - Add support for Python 3.12.
 - Add a Read the Docs configuration file.
 - Make documentation builds reproducible.

conftest.py

@@ -7,7 +7,7 @@
 import sqlalchemy.exc
 from sqlalchemy import create_engine
 from sqlalchemy.ext.hybrid import hybrid_property
-from sqlalchemy.orm import sessionmaker
+from sqlalchemy.orm import declarative_base, sessionmaker, synonym_for
 from sqlalchemy.orm.session import close_all_sessions
 
 from sqlalchemy_utils import (
@@ -16,11 +16,6 @@
     i18n,
     InstrumentedList
 )
-from sqlalchemy_utils.compat import (
-    _declarative_base,
-    _select_args,
-    _synonym_for
-)
 from sqlalchemy_utils.functions.orm import _get_class_registry
 from sqlalchemy_utils.types.pg_composite import remove_composite_listeners
 
@@ -154,7 +149,7 @@ def connection(engine):
 
 @pytest.fixture
 def Base():
-    return _declarative_base()
+    return declarative_base()
 
 
 @pytest.fixture
@@ -191,7 +186,7 @@ def articles_count(self):
         def articles_count(cls):
             Article = _get_class_registry(Base)['Article']
             return (
-                sa.select(*_select_args(sa.func.count(Article.id)))
+                sa.select(sa.func.count(Article.id))
                 .where(Article.category_id == cls.id)
                 .correlate(Article.__table__)
                 .label('article_count')
@@ -201,7 +196,7 @@ def articles_count(cls):
         def name_alias(self):
             return self.name
 
-        @_synonym_for('name')
+        @synonym_for('name')
         @property
         def name_synonym(self):
             return self.name
@@ -238,12 +233,7 @@ def session(request, engine, connection, Base, init_models):
     with connection.begin():
         Base.metadata.create_all(connection)
     Session = sessionmaker(bind=connection)
-    try:
-        # Enable sqlalchemy 2.0 behavior.
-        session = Session(future=True)
-    except TypeError:
-        # sqlalchemy 1.3
-        session = Session()
+    session = Session(future=True)
     i18n.get_locale = get_locale
 
     def teardown():

setup.py

@@ -75,7 +75,7 @@ def get_version():
     include_package_data=True,
     platforms='any',
     install_requires=[
-        'SQLAlchemy>=1.3',
+        'SQLAlchemy>=1.4',
     ],
     extras_require=extras_require,
     python_requires='>=3.9',

sqlalchemy_utils/aggregates.py

@@ -371,7 +371,6 @@ class Rating(Base):
 from sqlalchemy.ext.declarative import declared_attr
 from sqlalchemy.sql.functions import _FunctionGenerator
 
-from .compat import _select_args, get_scalar_subquery
 from .functions.orm import get_column_key
 from .relationships import (
     chained_join,
@@ -455,7 +454,7 @@ def aggregate_query(self):
             self.relationships[0].mapper.class_
         )
 
-        return get_scalar_subquery(query)
+        return query.scalar_subquery()
 
     def update_query(self, objects):
         table = self.class_.__table__
@@ -490,7 +489,7 @@ def update_query(self, objects):
                 return query.where(
                     local.in_(
                         sa.select(
-                            *_select_args(remote)
+                            remote
                         ).select_from(
                             chained_join(*reversed(self.relationships))
                         ).where(

sqlalchemy_utils/compat.py

@@ -10,72 +10,3 @@ def get_sqlalchemy_version(version=metadata("sqlalchemy")["Version"]):
         return tuple(int(v) for v in match.groups() if v is not None)
     except AttributeError:
         return ()
-
-
-_sqlalchemy_version = get_sqlalchemy_version()
-
-
-# In sqlalchemy 2.0, some functions moved to sqlalchemy.orm.
-# In sqlalchemy 1.3, they are only available in .ext.declarative.
-# In sqlalchemy 1.4, they are available in both places.
-#
-# WARNING
-# -------
-#
-# These imports are for internal, private compatibility.
-# They are not supported and may change or move at any time.
-# Do not import these in your own code.
-#
-
-if _sqlalchemy_version >= (1, 4):
-    from sqlalchemy.orm import declarative_base as _declarative_base
-    from sqlalchemy.orm import synonym_for as _synonym_for
-else:
-    from sqlalchemy.ext.declarative import \
-        declarative_base as _declarative_base
-    from sqlalchemy.ext.declarative import synonym_for as _synonym_for
-
-
-# scalar subqueries
-if _sqlalchemy_version >= (1, 4):
-    def get_scalar_subquery(query):
-        return query.scalar_subquery()
-else:
-    def get_scalar_subquery(query):
-        return query.as_scalar()
-
-
-# In sqlalchemy 2.0, select() columns are positional.
-# In sqlalchemy 1.3, select() columns must be wrapped in a list.
-#
-# _select_args() is designed so its return value can be unpacked:
-#
-#     select(*_select_args(1, 2))
-#
-# When sqlalchemy 1.3 support is dropped, remove the call to _select_args()
-# and keep the arguments the same:
-#
-#     select(1, 2)
-#
-# WARNING
-# -------
-#
-# _select_args() is a private, internal function.
-# It is not supported and may change or move at any time.
-# Do not import this in your own code.
-#
-if _sqlalchemy_version >= (1, 4):
-    def _select_args(*args):
-        return args
-else:
-    def _select_args(*args):
-        return [args]
-
-
-__all__ = (
-    "_declarative_base",
-    "get_scalar_subquery",
-    "get_sqlalchemy_version",
-    "_select_args",
-    "_synonym_for",
-)

sqlalchemy_utils/generic.py

@@ -53,11 +53,7 @@ def get(self, state, dict_, passive=attributes.PASSIVE_OFF):
 
         id = self.get_state_id(state)
 
-        try:
-            target = session.get(target_class, id)
-        except AttributeError:
-            # sqlalchemy 1.3
-            target = session.query(target_class).get(id)
+        target = session.get(target_class, id)
 
         # Return found (or not found) target.
         return target

sqlalchemy_utils/listeners.py

@@ -143,8 +143,6 @@ def auto_delete_orphans(attr):
         from sqlalchemy.ext.associationproxy import association_proxy
         from sqlalchemy import *
         from sqlalchemy.orm import *
-        # Necessary in sqlalchemy 1.3:
-        # from sqlalchemy.ext.declarative import declarative_base
         from sqlalchemy import event
 
 

sqlalchemy_utils/relationships/__init__.py

@@ -2,7 +2,6 @@
 import sqlalchemy.orm
 from sqlalchemy.sql.util import ClauseAdapter
 
-from ..compat import _select_args
 from .chained_join import chained_join  # noqa
 
 
@@ -96,7 +95,7 @@ def select_correlated_expression(
 ):
     relationships = list(reversed(path_to_relationships(path, root_model)))
 
-    query = sa.select(*_select_args(expr))
+    query = sa.select(expr)
 
     join_expr, aliases = chained_inverse_join(relationships, leaf_model)
 

sqlalchemy_utils/types/encrypted/encrypted_type.py

@@ -257,11 +257,7 @@ class StringEncryptedType(TypeDecorator, ScalarCoercible):
 
         import sqlalchemy as sa
         from sqlalchemy import create_engine
-        try:
-            from sqlalchemy.orm import declarative_base
-        except ImportError:
-            # sqlalchemy 1.3
-            from sqlalchemy.ext.declarative import declarative_base
+        from sqlalchemy.orm import declarative_base
         from sqlalchemy.orm import sessionmaker
 
         from sqlalchemy_utils import StringEncryptedType