openstack/barbican
Code Issues Proposed changes

Replace None comparisons in SQLAlchemy code

Browse Source 
SQLAlchemy requires '==' to compare to None, but using '== None'
comparisons triggers the pep8 error E711. Another way to do '=='
comparisons for SQLAlchemy is using its is_() method.

This patch replaces all '== None' comparisons with 'is_(None)', which
does not trigger the pep8 error. Because there are no more E711
vialotions left, this patch also removes E711 from the pep8 ignore list
in tox.ini.

Change-Id: I96bd835688176c87d3f8079421c3394c1d431d43
This commit is contained in:
Daniel Gonzalez 2016-01-17 17:38:20 +01:00
parent 9c06897c7a
commit 5bf06f973f
2 changed files with 6 additions and 19 deletions
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23
barbican/model/repositories.py
View File

@ -609,9 +609,7 @@ class SecretRepo(BaseRepo):
query = session.query(models.Secret)
query = query.filter_by(deleted=False)
# Note(john-wood-w): SQLAlchemy requires '== None' below,
# not 'is None'.
query = query.filter(or_(models.Secret.expiration == None,
query = query.filter(or_(models.Secret.expiration.is_(None),
models.Secret.expiration > utcnow))
if name:
@ -658,9 +656,7 @@ class SecretRepo(BaseRepo):
"""Sub-class hook: build a retrieve query."""
utcnow = timeutils.utcnow()
# Note(john-wood-w): SQLAlchemy requires '== None' below,
# not 'is None'.
expiration_filter = or_(models.Secret.expiration == None,
expiration_filter = or_(models.Secret.expiration.is_(None),
models.Secret.expiration > utcnow)
query = session.query(models.Secret)
@ -691,9 +687,7 @@ class SecretRepo(BaseRepo):
session = self.get_session(session)
try:
utcnow = timeutils.utcnow()
# Note(john-wood-w): SQLAlchemy requires '== None' below,
# not 'is None'.
expiration_filter = or_(models.Secret.expiration == None,
expiration_filter = or_(models.Secret.expiration.is_(None),
models.Secret.expiration > utcnow)
query = session.query(models.Secret)
@ -1413,23 +1407,20 @@ class CertificateAuthorityRepo(BaseRepo):
# get both subcas that have been defined for your project
# (cas for which ca.project_id == project_id) AND
# all top-level CAs (ca.project_id == None)
# Note(alee) for sqlalchemy, use '== None', not 'is None'
query = session.query(models.CertificateAuthority)
query = query.filter(or_(
models.CertificateAuthority.project_id == project_id,
models.CertificateAuthority.project_id == None
models.CertificateAuthority.project_id.is_(None)
))
query = query.order_by(models.CertificateAuthority.created_at)
query = query.filter_by(deleted=False)
# Note(alee) SQLAlchemy requires '== None' below,
# not 'is None'.
if not show_expired:
utcnow = timeutils.utcnow()
query = query.filter(or_(
models.CertificateAuthority.expiration == None,
models.CertificateAuthority.expiration.is_(None),
models.CertificateAuthority.expiration > utcnow))
if plugin_name:
@ -1495,11 +1486,9 @@ class CertificateAuthorityRepo(BaseRepo):
"""Sub-class hook: build a retrieve query."""
utcnow = timeutils.utcnow()
# Note(alee): SQLAlchemy requires '== None' below,
# not 'is None'.
# TODO(jfwood): Performance? Is the many-to-many join needed?
expiration_filter = or_(
models.CertificateAuthority.expiration == None,
models.CertificateAuthority.expiration.is_(None),
models.CertificateAuthority.expiration > utcnow)
query = session.query(models.CertificateAuthority)

2
tox.ini
View File

@ -94,8 +94,6 @@ commands =
/bin/bash {toxinidir}/functionaltests/pretty_tox.sh '{posargs}'
[flake8]
# E711 ignored because of sqlalchemy override of == None
ignore = E711
exclude = .git,.idea,.tox,bin,dist,debian,rpmbuild,tools,*.egg-info,*.eggs,*openstack/common,contrib,
functionaltests,*alembic_migrations/versions,*docs/target,*.egg