cubicweb: Graph

[datafeed] extract some methods from pull_data to ease writing custom datafeed sources
2011-05-27, by Sylvain Thénault
drop useless code
2011-05-27, by Sylvain Thénault
backport stable
2011-05-26, by Sylvain Thénault
[datafeed] we should use utc timestamp to avoid pb with local times stable
2011-05-26, by Sylvain Thénault
[test] fix failure introduced by yams'changeset 644:f9c79356b758
2011-05-26, by Sylvain Thénault
[testlib] add convenience assertion method to check __message
2011-05-26, by Sylvain Thénault
[test] fix failure introduced by 1719eab69551: the regexp should be fixed, not the error message
2011-05-26, by Sylvain Thénault
[web test] fix test failures introduced by 7431:cab99ccdb774
2011-05-25, by Sylvain Thénault
backport stable changes
2011-05-25, by Aurelien Campeas
[ui message] fix regression introduced by 7429:ef5165fa99e0, leading to 'None' message displayed in the ui stable
2011-05-25, by Sylvain Thénault
backport stable changes
2011-05-25, by Aurelien Campeas
[json controller] fix .exception call msg format string (missing one slot) stable
2011-05-25, by Aurelien Campeas
[test] fix tests broken by 7427:5338d895b891 stable
2011-05-25, by Sylvain Thénault
merge default heads
2011-05-25, by Sylvain Thénault
[ui messages, xss] Start migration towards use of _msgid instead of __message (prone to XSS injection) closes #1698245
2011-05-25, by Arthur Lutz
backport stable
2011-05-25, by Sylvain Thénault
[ui messages] make application message component works when request has no cnx set and support for explicit message given through render argument stable
2011-05-25, by Sylvain Thénault
backport stable
2011-05-25, by Sylvain Thénault
[web session] fix session handling so we get a chance to have for instance the 'forgotpwd' feature working on a site where anonymous are not allowed stable
2011-05-25, by Sylvain Thénault
[ajax js/css] modconcat fix: load code exactly once (auc, fcayre)
2011-05-25, by Aurelien Campeas
[test] update test broken by previous commit stable
2011-05-25, by Sylvain Thénault
[entity fetch_attrs] remove ambiguous relations on different etypes from fetched attrs or it may produce wrong related results; closes #1700896 stable
2011-05-25, by Florent Cayré
typo : s/undoed/undone/ stable
2011-05-24, by Arthur Lutz
[cwvreg] inline function dump_class()
2011-05-23, by Nicolas Chauvat
[js/ajax] undeprecate (async)remoteExec. closes #1381205 stable
2011-05-24, by Aurelien Campeas
[rql2sql] closes #1697862: ORDERBY SUM(C) cancel GROUPBY by wrongly adding C to grouped variables stable
2011-05-24, by Sylvain Thénault
backport stable
2011-05-23, by Sylvain Thénault
Added tag cubicweb-debian-version-3.12.5-1 for changeset 6dfe78a0797c stable
2011-05-23, by Sylvain Thénault
Added tag cubicweb-version-3.12.5 for changeset ae33197db1f0 stable cubicweb-debian-version-3.12.5-1
2011-05-23, by Sylvain Thénault
3.12.5 stable cubicweb-version-3.12.5
2011-05-23, by Sylvain Thénault
i18nupdate stable
2011-05-23, by Sylvain Thénault
[views/table (facetform)] introduced in facetbox, was missing in tableview form filter
2011-05-20, by Aurelien Campeas
[web.facet] self.w -> w
2011-05-20, by Aurelien Campeas
[web/facet|views/table] bump a bit some heights, split table view methods for easier subclassing
2011-05-20, by Aurelien Campeas
backport stable
2011-05-20, by Sylvain Thénault
cleanup and update some copyright stable
2011-05-20, by Sylvain Thénault
[migractions] fix change_attribute_type stable
2011-05-20, by Sylvain Thénault
[migractions] dropped_constraints should accept only droprequired without cstrtype stable
2011-05-20, by Sylvain Thénault
[form rendering] some refactoring to ease FormRenderer overriding stable
2011-05-20, by Sylvain Thénault
[deprecation] drop remaining warnings stable
2011-05-19, by Sylvain Thénault
backport stable
2011-05-19, by Sylvain Thénault
[session] new methods on session to ease access to security/hooks control context managers stable
2011-05-19, by Sylvain Thénault
[workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible stable
2011-05-19, by Sylvain Thénault
[workflow] new 'incontext-state' view for IWorkflowable entities stable
2011-05-19, by Sylvain Thénault
[facets/table] vertically group facets by two when possible in order to have a more compact horizontal layout in table filter form
2011-05-19, by Aurelien Campeas
[workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357) stable
2011-05-19, by Sylvain Thénault
[web test] fix test broken by making cw_source editable by managers
2011-05-19, by Sylvain Thénault
[multi-sources] support for moving an entity from an external source (closes #343818)
2011-05-19, by Sylvain Thénault
[repository api] definitly kill usage of word 'pool' to refer to connections set used by a session
2011-05-19, by Sylvain Thénault
backport stable
2011-05-19, by Sylvain Thénault
[rql2sql] fix in 7394:d11d88bd08e8 was actually not needed stable
2011-05-19, by Sylvain Thénault
[rset] close #1683703: rset.get_entity crash on rql query with subquery and aggregat stable
2011-05-19, by Sylvain Thénault
[rql2sql] fix generated sql for eid comparison. closes #1638695 stable
2011-05-19, by Sylvain Thénault
fix some deprecation warnings stable
2011-05-18, by Sylvain Thénault
[querier test] test groupby function call / column number
2011-05-18, by Sylvain Thénault
backport stable
2011-05-17, by Sylvain Thénault
[plot views] don't paginate stable
2011-05-16, by Sylvain Thénault
backport oldstable stable
2011-05-16, by Sylvain Thénault
[url rewriting] fix nasty bug in build_rset inner function: the same dictionary is used by all queries, hence triggering potentially important bugs on concurrent requests (this dictionary goes back and forth the repository) oldstable
2011-05-16, by Sylvain Thénault
[hooks selection optimization] prune hooks when multiple entities are concerned by a hm.call_hooks() (closes: #1672022)
2011-04-28, by Alexandre Fayolle
[repo test] datafeed parser's process method should now take raise_on_error argument
2011-05-16, by Sylvain Thénault
[datafeed] propagate raise_on_error to parser's process method
2011-05-16, by Sylvain Thénault
[http] Make a better __repr__ for Status responce exception. stable
2011-05-16, by Pierre-Yves David
[schema] fix imprecise error message
2011-05-13, by Aurelien Campeas
fix name error introduced in previous changeset
2011-05-13, by Alexandre Fayolle
[server test] restore logging level after test end
2011-05-13, by Sylvain Thénault
[web data] fix datadir handling to avoid web test failure introduced somewhere in default branch
2011-05-13, by Sylvain Thénault
remove debug print
2011-05-13, by Sylvain Thénault
[datafeed] extract a generic DataFeedXMLParser from CWEntityXMLParser
2011-05-13, by Sylvain Thénault
backport stable
2011-05-13, by Sylvain Thénault
[entity] fix cw_instantiate w/ reverse_ relation crash when either multiple entities are given or an eid instead of an entity stable
2011-05-13, by Sylvain Thénault
[cw source ui] fix mapping checking for datafeed source (avoid false positive error, but doesn't check that much things) stable
2011-05-13, by Sylvain Thénault
[web request] don't define pageid js variable when one is found in form parameters (eg, page ajax call) stable
2011-05-12, by Sylvain Thénault
[repo cache] there are some relations we don't want to cache, they may cause memory leak stable
2011-05-11, by Sylvain Thénault
[c-c shell] we should commit the migration handler, cnx is not None unless connected through pyro stable
2011-05-11, by Sylvain Thénault
[cwpermission, cwgroup] convenience method on CWGroup to grant a local permission (ie CWPermission) on an entity stable
2011-05-11, by Sylvain Thénault
[cleanup] kill some remaining traces of goa stable
2011-05-11, by Sylvain Thénault
[c-c shell] closes #1669147: autocommit in maintenance scripts stable
2011-05-11, by Sylvain Thénault
backport stable
2011-05-11, by Sylvain Thénault
Added tag cubicweb-debian-version-3.12.4-1 for changeset 7c4d34a5ec57 stable
2011-05-11, by Sylvain Thénault
Added tag cubicweb-version-3.12.4 for changeset 5cd0dbc26882 stable cubicweb-debian-version-3.12.4-1
2011-05-11, by Sylvain Thénault
3.12.4 stable cubicweb-version-3.12.4
2011-05-11, by Sylvain Thénault
missing future import
2011-05-11, by Sylvain Thénault
don't let windmill/qunit test break apycot warning for all web/test stable
2011-05-11, by Sylvain Thénault
[selectors] enhance rql_condition to make it usable as a condition on request's user stable
2011-05-11, by Sylvain Thénault
[repo test] fix test broken by c2452cd57026 by using proper fake session
2011-05-11, by Sylvain Thénault
[testlib] fake session can be given a vreg
2011-05-11, by Sylvain Thénault
backport stable
2011-05-10, by Sylvain Thénault
fix some test failures introduced by 7350:c2452cd57026
2011-05-10, by Sylvain Thénault
[rql2sql] fix bug avoiding outer join relation to be used as a variable principal. Closes #1659395 stable
2011-05-10, by Sylvain Thénault
resurrect code lost by too much patch manipulation
2011-05-10, by Sylvain Thénault
backport stable
2011-05-10, by Sylvain Thénault
[parsers] various refactorings stable
2011-05-02, by Nicolas Chauvat
backport oldstable stable
2011-05-10, by Sylvain Thénault
backport stable
2011-05-10, by Sylvain Thénault
fix _set_relation when no target eids, update datafeed source pull_data arguments to raise on error during tests stable
2011-05-10, by Sylvain Thénault
[session] enhance session's transaction storage handling to fix cases where commit/rollback is done while in the context of hooks_control/security_enabled managers. Closes #1412648: commit or rollback during postcreate reset hooks control state
2011-05-10, by Sylvain Thénault
[session] nicer local variable names
2011-05-10, by Sylvain Thénault
[web server] #1642893 issue a 403 instead of a 500 on Unauthorized exception oldstable
2011-05-10, by Pierre-Yves David
[css] repair selected slice distinctiveness (with a nice, discrete bg color)
2011-05-09, by Aurelien Campeas
[view] ability to define a column header through custom label_column_<colindex> method, useful for table view to customize a specific column without specifying others stable
2011-05-09, by Sylvain Thénault
[selectors] test/fix rql_condition to make it works when entity is specified via 'entity' keyword argument instead of rset, row and col stable
2011-05-09, by Sylvain Thénault
[etwist] fix bug w/ new resources concantenation and https-url enabled sites
2011-05-09, by Sylvain Thénault
oops stable
2011-05-09, by Sylvain Thénault
adds support for a portable db import/export format (closes: #1521112) stable
2011-04-21, by Sylvain Thénault
add a new method iter_process_result which does the same as proces_result but is a generator (closes #1625374) stable
2011-04-21, by Alexandre Fayolle
[session] lock self._closed and session.close to avoid race conditions stable
2011-05-09, by Sylvain Thénault
[server test] use a lock instead of sleep to have higher green probability :/ stable
2011-05-09, by Sylvain Thénault
backport stable
2011-05-09, by Sylvain Thénault
[testlib] create_user may now create user's email address stable
2011-05-09, by Sylvain Thénault
enhanced comment
2011-05-09, by Sylvain Thénault
[i18n] en translation fixes stable
2011-05-09, by Sylvain Thénault
[users management] use an existing msgid... stable
2011-05-09, by Sylvain Thénault
[cwgroup views] uicfg rules cleanup stable
2011-05-09, by Sylvain Thénault
backport stable
2011-05-07, by Sylvain Thénault
[testlib] grant_permission now accept either an entity or en eid stable
2011-05-07, by Sylvain Thénault
[session selector] missing not stable
2011-05-07, by Sylvain Thénault
[session] new selectors according to session type (eg user or internal stable
2011-05-06, by Sylvain Thénault
[ajax] reload method should return underlying deferred stable
2011-05-06, by Sylvain Thénault
[user mgmt] should show user login in first column in any case (e.g. application specific override) stable
2011-05-06, by Sylvain Thénault
[component|i18n] give imgs an alt attribute, refresh i18n po files
2011-05-06, by Aurelien Campeas
[i18n/es] repair es.po
2011-05-06, by Aurelien Campeas
[testlib] fix deprecation warning stack level stable
2011-05-06, by Sylvain Thénault
[nav component/cosmetics] have nice looking arrows insteads of << / >>
2011-05-06, by Aurelien Campeas
backport stable
2011-05-06, by Sylvain Thénault
Added tag cubicweb-debian-version-3.12.3-1 for changeset ba8fe4f2e408 stable
2011-05-06, by Sylvain Thénault
Added tag cubicweb-version-3.12.3 for changeset e712bc6f1f71 stable cubicweb-debian-version-3.12.3-1
2011-05-06, by Sylvain Thénault
3.12.3 stable cubicweb-version-3.12.3
2011-05-05, by Sylvain Thénault
backport oldstable stable
2011-05-05, by Sylvain Thénault
Added tag cubicweb-debian-version-3.11.3-1 for changeset b3c6702761a1 oldstable
2011-05-05, by Sylvain Thénault
Added tag cubicweb-version-3.11.3 for changeset b7a124f9aed2 oldstable cubicweb-debian-version-3.11.3-1
2011-05-05, by Sylvain Thénault
3.11.3 hopefuly closing the 3.11 serie oldstable cubicweb-version-3.11.3
2011-05-05, by Sylvain Thénault
backport stable
2011-05-05, by Sylvain Thénault
[testlib] fix assertAuthFailure to consider both None and dbapi._NeedAuthAccessMock as meaning 'no connection has been set' stable
2011-05-05, by Sylvain Thénault
[i18n] update spanish translation, thanks to Celso from CreaLibre stable
2011-05-05, by Sylvain Thénault
[i18n] fix french translation stable
2011-05-05, by Sylvain Thénault
[primary, metadata] reuse existing msgids stable
2011-05-05, by Sylvain Thénault
fix ajax loading of concatenated js/ css + prefix concat cache files to ease cache clearing
2011-05-05, by Florent Cayré
[entity] make set_relations() accept entities and eids (closes #1631391) stable
2011-05-05, by Nicolas Chauvat
[CubicWebTC] fix create_user bw compat stable
2011-05-05, by Sylvain Thénault
[msplanner] fix regression and test failure introduced in 7292:258c92805066 stable
2011-05-05, by Sylvain Thénault
[repository quick start] should modify class attribute to get this actually working (used by a classmethod) stable
2011-05-04, by Sylvain Thénault
backport stable
2011-05-04, by Adrien Di Mascio
[js] use minified jquery stable
2011-05-04, by Aurelien Campeas
[entity] fix entity fetch_rql when fetch_attrs contains a rtype with multiple destination etypes which do not have the same fetched attributes themselves (closes #1631282) stable
2011-05-04, by Florent Cayré
[configuration] exit with proper message when sources file is unreadable (you usually started cw while logged with a wrong user). Closes #1631238
2011-05-03, by Sylvain Thénault
[js] remove facet-loading.png, use plain-text / i18n
2011-05-03, by Adrien Di Mascio
backport stable
2011-05-03, by Sylvain Thénault
[selectors] fix on_fire_transition for cases where change_state is called (eg no transition specified) stable
2011-05-03, by Sylvain Thénault
[workflow selectors] introduced new on_fire_transition hook selector, deprecated on_transition stable
2011-05-02, by Sylvain Thénault
backport stable
2011-05-02, by Sylvain Thénault
[migration] new command to get default workflow for an entity type stable
2011-05-02, by Sylvain Thénault
[workflow hooks] reuse metadata/integrity categories instead of a new 'workflow' category and drop useless hook
2011-05-02, by Sylvain Thénault
[entity 3.13 api] rename clear_all_caches into cw_clear_all_cache
2011-05-02, by Sylvain Thénault
[ms planner] ignore neged source relation when trying to restrict query sources stable
2011-04-29, by Sylvain Thénault
[users management] show email as text avoid specific primary email rendering (and we don't bother getting a clickable link) stable
2011-04-29, by Sylvain Thénault
[primary view] display entity source in 'metadata' view if it's not the system source stable
2011-04-29, by Sylvain Thénault
[users management] enhance users table: show state, primary email and data source; show filter form stable
2011-04-29, by Sylvain Thénault
merge changes from oldstable stable
2011-04-29, by Nicolas Chauvat
[entity] improve error message oldstable
2011-04-29, by Nicolas Chauvat
[doc] fix doc and tutorials about hooks and operations oldstable
2011-04-29, by Nicolas Chauvat
[optim] cache rset column structures
2011-04-29, by Adrien Di Mascio
[js] make _loadAjaxHtmlHead aware of mod_concat-like urls
2011-04-29, by Adrien Di Mascio
[etwist] in debug-mode, concat-file is rebuilt if one of the concatenated file is more recent
2011-04-29, by Adrien Di Mascio
[facets] display splash image while facets are reloading content (closes #1624851)
2011-04-14, by Nicolas Chauvat
[facets] mark titles of active facets with red dot (closes #1624857)
2011-04-14, by Nicolas Chauvat
[facet] add missing selector to HasRelationFacet stable
2011-04-29, by Sylvain Thénault
[facets] proper fix for #1625112: we should rather call unicode() as we always manipulate string as unicode internally stable
2011-04-29, by Sylvain Thénault
merge
2011-04-29, by Adrien Di Mascio
[etwist] Generates apache's mod_concat-like urls for js and css
2011-04-28, by Quentin Roquefort
handle js/ css file concatenation with twisted
2011-04-28, by Florent Cayré
put data version md5 into a new url segment to ease static serving
2011-04-28, by Florent Cayré
add cwctl command to generate a consolidated data directory with all cubes/ cubicweb data directories content to be delivered statically
2011-04-28, by Florent Cayré
[etwist] refactor child resources management
2011-04-28, by Adrien Di Mascio
[vreg] vregistry._select_best was needlessly instanciating NoSelectableObject (closes #1626708)
2011-04-27, by Alexandre Fayolle
backport stable
2011-04-28, by Sylvain Thénault
merge stable stable
2011-04-28, by Sylvain Thénault
merge oldstable oldstable
2011-04-28, by Sylvain Thénault
backport oldstable stable
2011-04-28, by Sylvain Thénault
[page data] don't call unload_page_data too many time (closes #1518398) oldstable
2011-04-28, by Sylvain Thénault
[request] don't init tabindex unnecessarily, since it's added to page data which will makes an ajax call to unload_page_data necessary oldstable
2011-04-28, by Sylvain Thénault
[deprecation] kill a remaining 3.6 warning oldstable
2011-04-28, by Sylvain Thénault
[web config] fix md5 version to ensure cubes order and to include cubicweb version stable
2011-04-27, by Florent Cayré
merged stable bugfix
2011-04-28, by Alexandre Fayolle
merged oldstable bugfix stable
2011-04-28, by Alexandre Fayolle
place the disable hooks context manager at the right place (closes: #1626694) oldstable
2011-04-27, by Alexandre Fayolle
backport stable into default
2011-04-28, by Adrien Di Mascio
backport oldstable into stable stable
2011-04-28, by Adrien Di Mascio
[js] fix inArray usage in reorderTabIndex() : inArray returns -1 if element is not found, not 'false' oldstable
2011-04-28, by Adrien Di Mascio
[rql] basic support for regexp-based pattern matching
2011-04-27, by Adrien Di Mascio
[rql] support CAST() Function
2011-04-27, by Adrien Di Mascio
stable is now 3.12 stable
2011-04-27, by Sylvain Thénault
oldstable is now 3.11 oldstable
2011-04-27, by Sylvain Thénault
[js] delete empty js files (incluced in cw.ajax.js)
2011-04-27, by Sylvain Thénault
[sql generation] fix crash on outer join + ambiguous inlined relation + attribute selection
2011-04-27, by Sylvain Thénault
[rql rewrite] backout 7177:f2a976cf7dac : since EXISTS is the variable scope, we want to insert snippets here anyway (other solution would be to NOT insert snippets at all in such case). Closes #1625464
2011-04-26, by Sylvain Thénault
[book] fix documentation + add chpasswd.py script
2011-04-22, by Julien Jehannet
[facets] fix unicode encode error; closes #1625112
2011-04-22, by Aurelien Campeas
[facets] fix RangeFacet get_widget: do no return a widget unless there are at least 2 values; closes #1625203
2011-04-22, by Aurelien Campeas
merge
2011-04-22, by Alexandre Fayolle
Backed out changeset 7a58581d842c
2011-04-22, by Alexandre Fayolle
small reformatting (but test still fails)
2011-04-22, by Alexandre Fayolle
fix tests broken by fcb8932082a5 (continued)
2011-04-22, by Alexandre Fayolle
fix bad handling of inlined relations when entities of different etypes are passed as subject to add_relations
2011-04-22, by Alexandre Fayolle
fix failing test_migration test caused by schema change
2011-04-22, by Alexandre Fayolle
fix tests broken by fcb8932082a5
2011-04-22, by Alexandre Fayolle
merge back stable
2011-04-21, by Alexandre Fayolle
fix server/test/unittest_checkintegrity (failing since 70538ea2532d) stable
2011-04-21, by Alexandre Fayolle
fix implementation of repository.glob_add_relations (closes ##1625257)
2011-04-20, by Alexandre Fayolle
[server] improve the speed of setting relations between entities (closes #1625257)
2011-04-15, by Alexandre Fayolle
added test case to monitor speed improvements in the repository code.
2011-04-15, by Alexandre Fayolle
backport stable changes to default
2011-04-20, by Alexandre Fayolle
[js] update jquery.corner.js to the latest version (uses native css support for browser that provide it); closes #1625065
2011-04-18, by Aurelien Campeas
[js/css] remove old versions of ui.tabs/slider etc.; closes #1625085
2011-04-18, by Adrien Di Mascio
[devtools] make return value of get_response_header(raw=True) consistent wrt get_header(raw=True) stable
2011-04-18, by Adrien Di Mascio
[widgets] handle no value label for tristate radios, put default separator on class for easier redefinition - closes #1624839
2011-04-15, by Aurelien Campeas
[doc] update of the update stable
2011-04-15, by Nicolas Chauvat
[tz postgres support] we've to commit the connection once time-zone is set, else we may loose the setting
2011-04-15, by Sylvain Thénault
[tz support] more tests
2011-04-15, by Sylvain Thénault
[dataimport] actually commit every desired number...
2011-04-15, by Sylvain Thénault
[doc] major update of the install documentation stable
2011-04-06, by Alain Leufroy
[facets] make rangefacet comply with start_unfolded (closes #1615869) stable
2011-04-14, by Nicolas Chauvat
[testlib] make a clear distinction between input / output HTTP headers stable
2011-04-14, by Adrien Di Mascio
[entity] create_entity/cw_instantiate should initialize entity's cache to avoid later queries
2011-04-14, by Sylvain Thénault
[testlib] refactor create_user and grant_permission to make them usable from pre_setup_database
2011-04-14, by Sylvain Thénault
[3.12 regression] don't access to __class__ directly, it may raise AttributeError
2011-04-14, by Sylvain Thénault
[testlib] fix typos / NameErrors in devtools/__init__.py stable
2011-04-13, by Adrien Di Mascio
[schema serialization] add warning on missing group stable
2011-04-13, by Sylvain Thénault
backport stable
2011-04-13, by Sylvain Thénault
[testlib] fix bug in backup file name generation: it may erroneously replace '-' by '_' in database **parent directories**. This should fix random error when test are run under apycot. stable
2011-04-13, by Sylvain Thénault
backport stable
2011-04-13, by Sylvain Thénault
[schema diagram] proper url generation (closes #1621276) stable
2011-04-13, by Sylvain Thénault
[testlib] fix readlb config handling, avoid systematic recreation of db with postgres (closes #1618089) stable
2011-04-13, by Adrien Di Mascio
[entities] fix cw_instantiate typo stable
2011-04-13, by Aurelien Campeas
[entities/test] add failing test for cw_instantiate stable
2011-04-12, by Aurelien Campeas
[timezone] ensure tzinfo is None
2011-04-12, by Sylvain Thénault
[entity] use a list comprehension stable
2011-04-12, by Sylvain Thénault
Added tag cubicweb-debian-version-3.12.2-1 for changeset 6d418fb3ffed
2011-04-11, by Nicolas Chauvat
Added tag cubicweb-version-3.12.2 for changeset 5a9b6bc56538 cubicweb-debian-version-3.12.2-1
2011-04-11, by Nicolas Chauvat
[packaging] prepare the release of version 3.12.2 cubicweb-version-3.12.2
2011-04-11, by Nicolas Chauvat