[ssplanner] Prevent execution of write queries involving computed relations
Previously, setting a computed relation upon entity creation or
modification (using the ORM or an RQL query) would usually fail with an
operational error in the backend ("no such table"). However, under some
mysterious circumstances (like passing a string as value in cw_set for a
computed relation), the RQL to SQL transformation would simply drop the
clause.
To prevent this to happen, we add a check for computed relation before
adding a relation to an execution plan. This check raises a QueryError.
It happens in several places:
* in querier.InsertPlan.add_relation_def() (called from several places
in ssplanner steps) for INSERT queries,
* in ssplanner.UpdateStep.execute() for SET queries and,
* in ssplanner.SSplanner.build_delete_plan() for DELETE queries.
Tests added to unittest_querier.py because unittest_sslplanner.py looked
inappropriate (it has only unit tests) and the former already had a
NonRegressionTC class.
[tox]
envlist =
check-manifest,flake8,
py{27,3}-{server,web,misc}
[testenv]
deps =
-r{toxinidir}/requirements/dev.txt
py27: backports.tempfile
misc: -r{toxinidir}/requirements/test-misc.txt
server: -r{toxinidir}/requirements/test-server.txt
web: -r{toxinidir}/requirements/test-web.txt
commands =
misc: {envpython} -m pip install --upgrade --no-deps --quiet git+git://github.com/logilab/yapps@master#egg=yapps
misc: {envpython} -m pytest {posargs} {toxinidir}/cubicweb/test {toxinidir}/cubicweb/dataimport/test {toxinidir}/cubicweb/devtools/test {toxinidir}/cubicweb/entities/test {toxinidir}/cubicweb/ext/test {toxinidir}/cubicweb/hooks/test {toxinidir}/cubicweb/sobjects/test {toxinidir}/cubicweb/wsgi/test {toxinidir}/cubicweb/pyramid/test
py27-misc: {envpython} -m pytest {posargs} {toxinidir}/cubicweb/etwist/test
server: {envpython} -m pytest {posargs} {toxinidir}/cubicweb/server/test
web: {envpython} -m pytest {posargs} {toxinidir}/cubicweb/web/test
[testenv:flake8]
skip_install = true
deps =
flake8 >= 3.5
whitelist_externals =
/bin/sh
commands = /bin/sh -c "flake8 `xargs -a {toxinidir}/flake8-ok-files.txt`"
[testenv:doc]
skip_install = true
changedir = doc
deps =
sphinx
-r{toxinidir}/requirements/doc.txt
commands =
{envpython} -m sphinx -b html -d {envtmpdir}/doctrees . {envtmpdir}/html
[testenv:check-manifest]
skip_install = true
deps =
check-manifest
commands =
{envpython} -m check_manifest {toxinidir} \
# ignore symlinks that are not recognized by check-manifest, see
# https://github.com/mgedmin/check-manifest/issues/69
--ignore cubicweb/devtools/test/data/cubes/i18ntestcube*,cubicweb/test/data/legacy_cubes*
[pytest]
python_files = *test_*.py
[flake8]
format = pylint
ignore = W503
max-line-length = 100
exclude = doc/*,.tox/*
# vim: wrap sts=2 sw=2