daniel added a comment.
Pseudo-code for `saveRevisionRecord()`
// assume we are in a db transaction
$this->checkIsCurrentRevision( $this->baseRevision ); // protect against
race condition
$model = $slots['main']->getModel(); // "main" model must always be there
$length = SUM( $slots[*]->getModel() );
$hash = count($slots) < 2 ? $slots[0]->getHash() : HASH(
$slots[*]->getHash() ); // special case for b/c
$revId = $this->insertRevision( $user, $comment, $timestamp, $model,
$length, $hash, $parentRev, ... );
foreach ( $slots as $name => $slot ) {
$this->insertSlot( $revId, $name, $slot );
}
$this->updatePage( $this->title, $revId ); // make the new revision the
current revision.
TASK DETAIL
https://phabricator.wikimedia.org/T107595
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