Some callers, when provided an invalid user name, will wind up passing
null or false. This raises a PHP warning and winds up treating it as the
empty array. In this case, it seems best to DWIM and continue that
behavior without the warning.
At the same time, let's more explicitly reject other values for $users.
Bug: T239772
Bug: T207217
Change-Id: I6027481f6cad222369911d5053fecc06c92b36ea
This removes most of the pre-actor user and user_text columns, and the
$wgActorTableSchemaMigrationStage setting that used to determine
whether the columns were used.
rev_user and rev_user_text remain in the code, as on Wikimedia wikis the
revision table is too large to alter at this time. A future change will
combine that with the removal of rev_comment, rev_content_model, and
rev_content_format (and the addition of rev_comment_id and rev_actor).
ActorMigration's constructor continues to take a $stage parameter, and
continues to have the logic for handling it, for the benefit of
extensions that might need their own migration process. Code using
ActorMigration for accessing the core fields should be updated to use
the new actor fields directly. That will be done for in a followup.
Bug: T188327
Change-Id: Id35544b879af1cd708f3efd303fce8d9a1b9eb02
When this was originally written, the plan was to read both the old and
new fields during the transition period, while stopping writes to them
midway through. It turns out that the WHERE conditions to do read-both
correctly are generally not handled well by the database and working
around that would require a lot of complicated code (see what's being
removed from ApiQueryUserContribs here, for example).
We can simplify things greatly by instead having it write both fields
during the transition period, reading from the old for the first part
and the new for the second part, as is being done for MCR.
Bug: T204669
Change-Id: I4764c1c7883dc1003cb12729455c8107319f70b1
Depends-On: I845f6ae462f2539ebd35cbb5f2ca8b5714e2c1fb
Depends-On: I88b31b977543fdbdf69f8c1158e77e448df94e11
Storing the user name or IP in every row in large tables like revision
and logging takes up space and makes operations on these tables slower.
This patch begins the process of moving those into one "actor" table
which other tables can reference with a single integer field.
A subsequent patch will remove the old columns.
Bug: T167246
Depends-On: I9293fd6e0f958d87e52965de925046f1bb8f8a50
Change-Id: I8d825eb02c69cc66d90bd41325133fd3f99f0226
