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Change all "conn = engine.connect()" statements to "with engine.connect() as conn:" in ub.py

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Changed all the statements in ub.py to use python context managers so that conn.close() is called automatically.  (https://docs.sqlalchemy.org/en/13/core/connections.html)
This commit is contained in:
Marvel Renju 2020-08-10 03:42:36 +01:00
parent b309c1fc91
commit 76b0505bd9
1 changed files with 45 additions and 45 deletions
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30
cps/ub.py
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@ -474,14 +474,14 @@ def migrate_Database(session):
ArchivedBook.__table__.create(bind=engine)
if not engine.dialect.has_table(engine.connect(), "registration"):
ReadBook.__table__.create(bind=engine)
conn = engine.connect()
with engine.connect() as conn:
conn.execute("insert into registration (domain, allow) values('%.%',1)")
session.commit()
try:
session.query(exists().where(Registration.allow)).scalar()
session.commit()
except exc.OperationalError: # Database is not compatible, some columns are missing
conn = engine.connect()
with engine.connect() as conn:
conn.execute("ALTER TABLE registration ADD column 'allow' INTEGER")
conn.execute("update registration set 'allow' = 1")
session.commit()
@ -489,14 +489,14 @@ def migrate_Database(session):
session.query(exists().where(RemoteAuthToken.token_type)).scalar()
session.commit()
except exc.OperationalError: # Database is not compatible, some columns are missing
conn = engine.connect()
with engine.connect() as conn:
conn.execute("ALTER TABLE remote_auth_token ADD column 'token_type' INTEGER DEFAULT 0")
conn.execute("update remote_auth_token set 'token_type' = 0")
session.commit()
try:
session.query(exists().where(ReadBook.read_status)).scalar()
except exc.OperationalError:
conn = engine.connect()
with engine.connect() as conn:
conn.execute("ALTER TABLE book_read_link ADD column 'read_status' INTEGER DEFAULT 0")
conn.execute("UPDATE book_read_link SET 'read_status' = 1 WHERE is_read")
conn.execute("ALTER TABLE book_read_link ADD column 'last_modified' DATETIME")
@ -510,7 +510,7 @@ def migrate_Database(session):
try:
session.query(exists().where(Shelf.uuid)).scalar()
except exc.OperationalError:
conn = engine.connect()
with engine.connect() as conn:
conn.execute("ALTER TABLE shelf ADD column 'uuid' STRING")
conn.execute("ALTER TABLE shelf ADD column 'created' DATETIME")
conn.execute("ALTER TABLE shelf ADD column 'last_modified' DATETIME")
@ -525,30 +525,30 @@ def migrate_Database(session):
# Handle table exists, but no content
cnt = session.query(Registration).count()
if not cnt:
conn = engine.connect()
with engine.connect() as conn:
conn.execute("insert into registration (domain, allow) values('%.%',1)")
session.commit()
try:
session.query(exists().where(BookShelf.order)).scalar()
except exc.OperationalError: # Database is not compatible, some columns are missing
conn = engine.connect()
with engine.connect() as conn:
conn.execute("ALTER TABLE book_shelf_link ADD column 'order' INTEGER DEFAULT 1")
session.commit()
try:
create = False
session.query(exists().where(User.sidebar_view)).scalar()
except exc.OperationalError: # Database is not compatible, some columns are missing
conn = engine.connect()
with engine.connect() as conn:
conn.execute("ALTER TABLE user ADD column `sidebar_view` Integer DEFAULT 1")
session.commit()
create = True
try:
if create:
conn = engine.connect()
with engine.connect() as conn:
conn.execute("SELECT language_books FROM user")
session.commit()
except exc.OperationalError:
conn = engine.connect()
with engine.connect() as conn:
conn.execute("UPDATE user SET 'sidebar_view' = (random_books* :side_random + language_books * :side_lang "
"+ series_books * :side_series + category_books * :side_category + hot_books * "
":side_hot + :side_autor + :detail_random)",
@ -560,7 +560,7 @@ def migrate_Database(session):
try:
session.query(exists().where(User.denied_tags)).scalar()
except exc.OperationalError: # Database is not compatible, some columns are missing
conn = engine.connect()
with engine.connect() as conn:
conn.execute("ALTER TABLE user ADD column `denied_tags` String DEFAULT ''")
conn.execute("ALTER TABLE user ADD column `allowed_tags` String DEFAULT ''")
conn.execute("ALTER TABLE user ADD column `denied_column_value` String DEFAULT ''")
@ -569,7 +569,7 @@ def migrate_Database(session):
try:
session.query(exists().where(User.series_view)).scalar()
except exc.OperationalError:
conn = engine.connect()
with engine.connect() as conn:
conn.execute("ALTER TABLE user ADD column `series_view` VARCHAR(10) DEFAULT 'list'")
if session.query(User).filter(User.role.op('&')(constants.ROLE_ANONYMOUS) == constants.ROLE_ANONYMOUS).first() \
@ -577,11 +577,11 @@ def migrate_Database(session):
create_anonymous_user(session)
try:
# check if one table with autoincrement is existing (should be user table)
conn = engine.connect()
with engine.connect() as conn:
conn.execute("SELECT COUNT(*) FROM sqlite_sequence WHERE name='user'")
except exc.OperationalError:
# Create new table user_id and copy contents of table user into it
conn = engine.connect()
with engine.connect() as conn:
conn.execute("CREATE TABLE user_id (id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
"nickname VARCHAR(64),"
"email VARCHAR(120),"
@ -605,7 +605,7 @@ def migrate_Database(session):
# Remove login capability of user Guest
try:
conn = engine.connect()
with engine.connect() as conn:
conn.execute("UPDATE user SET password='' where nickname = 'Guest' and password !=''")
session.commit()
except exc.OperationalError: