[CWEP002] document computed relations and attributes Related to #3546717.

[CWEP002 migration] support sync_schema_props_perms for computed attribute

[CWEP002 migration] support drop_relation_type/drop_relation_definition/drop_attribute for computed attributes

[CWEP002 migration] support add_relation_type/add_attribute for computed attributes Related to #3546717.

[CWEP002] properly handle serialization of computed attributes Until this cset, only serialization of computed attribute's formula was handled (thanks to the relation definition's properties dict). We now: * properly serialize/deserialize attribute's formula * test first if the database has been migrated and contains related column or not Related to #3546717

[CWEP002] Add support for computed attribute synchronization Related to #3546717. Test and handle the behaviour with several formulas and identified use cases. To do so add a birth year and a computed attribute age to Person in the test schema.

[CWEP002] Add schema finalization checks for computed attributes ``finalize_computed_attributes`` essentially checks that computed attributes types match with the type declaration of the attribute. Related to #3546717.

[CWEP002] Account for attribute formula in schema bootstrap This isn't enough to have computed attribute support, it is only in order not to crash when yams 0.40 is used. Related to #3546717.

[CWEP002 migration] support sync_schema_props_perms for computed relations

[CWEP002 migration] support add_relation_type for computed relations Related to #3546717.

[CWEP002 migration] support drop_relation_type for computed relations Related to #3546717.

[CWEP002 migration] properly raise exception on (add|drop)_relation_definition for computed relation Related to #3546717

[hooks] do not abuse of inheritance for CWRType hooks Just copy the selector to ease readability.

[schema serial] add some comments

[schema] define full_rql on RQLExpression class without it, we may have an error while displaying error which occured during some expression initialization because this attribute is not yet defined while used in the __str__ method.

[schema] properly raise BadSchemaDefinition when some expression mains variables may not be guessed

[CWEP002] properly handle serialization of computed relations We now: * have CWComputedRelation in the bootstrap schema to store computed relations * properly serialize/deserialize it * test first if the database has been migrated and contains the related table Related to #3546717 [jcr: adjust unittest_querier to pass with the added entity type]

[CWEP002] Plug the computed relation rewriter in the querier Related to #3546717.

[CWEP002] refactor rql read security checking Split 'check_read_perms' into 'check_relations_perms' which checks relations 'read' permissions and 'get_local_checks' which build dictionary of local security checks (rql expression) for variables. This allows to check relations 'read' permissions earlier in the process and so to prepare insertion of the rql rewriter: we want to check permissions of the computed relation, not permissions of relations introduced by the associated rule, to conform to the CWEP. Related to #3546717

[CWEP002] introduce RQLRelationRewriter Refactor existing RQLRewriter for later reuse of rewriting relation as specified by CWEP002. Work is different because we simply want to replace a relation by another rql snippet and we don't have to bother with EXISTS, subqueries and all. This rewriter is not yet plugged into the querier. Depends on yams 0.40 API. Related to #3546717

[CWEP002] Add schema finalization checks for computed relations (rules) Related to #3546717

[schema] add utility function to build a CubicWebSchema from a namespace Will be useful for testing computed attributes and relations.

Fix test migration crash waiting to happen due to inferred relations Avoid crashing when a relation definition which is already known (due to being inferred) gets explicitly added. As explained in a comment, this would deserve more thinking, but at least this fixes a test failure with computed relations.

fix typo in syncschema hooks

[test] Make test_undo_api less random The order in which hooks are run is not predictable if they have the same 'order' attribute, which is the case for SetOwnershipHook and SetInitialStateHook. So don't assume in_state will be set before created_by.

merge 3.17.17 into 3.18 branch

[wsgi] Fix unicode decoding in POST The application/x-www-form-urlencoded sent by firefox or chrome is utf-8 encoded BEFORE being urlencoded. Hence, decoding must urldecode THEN decode the utf-8 string, and not the other way around.

[wsgi] add the --debug / -D option to the wsgi command

[wsgi] Fix multiple variables reading in params Closes #4306081

[wsgi] Set self.vreg Closes #4306049

[wsgi] Add missing import Closes #4305988

[wsgi] Fix https detection - 'HTTPS' is not part of wsgi, it is a CGI variable. The right wsgi variable is 'wsgi.url_scheme' - Force https if url starts with '/https/' (and remove the prefix from the path. Closes #4305985

[wsgi] Re-set the request content after calling the inherited constructor. Closes #4191813

[wsgi] Honor the 'CONTENT_TYPE' wsgi variable See http://legacy.python.org/dev/peps/pep-0333/#environ-variables Closes #4191812

Added tag cubicweb-version-3.17.17, cubicweb-debian-version-3.17.17-1, cubicweb-centos-version-3.17.17-1 for changeset 57e9d1c70512

[pkg] prepare 3.17.17

[web/headers] don't list a request header twice in "Vary"

[test] silence a few more deprecation warnings in unittest_hooks self.session → cnx.

[session] call rollback in Connection.__exit__ If we just free the cnxset and clear the Connection, we're missing the pending operation's rollback_event callbacks, which may be needed for cleanup.

[devtools] pre_setup_database takes a Connection, not a Session

[source/native] cPickle is available in all supported pythons

devtools: deprecate .req_from_url Which uses .request() And instead provide .admin_request_from_url, which is a context manager yielding the request.

[tests] Add a webtest based TestCase class Closes #4002134

[tests] Move 'anonymous_allowed' property from CubicWebServerTC to CubicWebTC The effective set of the property on the config is now done later that before, ie at the end of CubicWebTC.init_config instead of before. It is believed not to have an impact on the test suites that uses `anonymous_allowed`. Related to #4002134

[compat] Remove imports of "any" and "all" from lgc (closes #4306044) They're builtin since python 2.5.

[css] Remove the `div` tag specification of the pendingDelete css rule The HTML tag was changed by e2f96b16c3bd from a div to a span without changing the css rule accordingly. Closes #4285248.

[cwvreg] cleanup the event manager when reloading modules Closes #3848995 The event manager callbacks are not cleaned during reloading. So the callback defined in the reloaded module appears twice (old and new version). This may cause problem when the old version is called.

[test] Add missing attribute 'add' permission in test schema Silences yams warning.