Improve UpdateJob

[mwjames]

Store update

Currently UpdateJob calls updateStore explicitly.

$parserData = $this->withContext()->getDependencyBuilder()->newObject( 'ParserData', array(
    'Title'        => $this->getTitle(),
    'ParserOutput' => $parserOutput
) );

$parserData->disableUpdateJobs()->updateStore();

Instead use LinksUpdate which runs updateStore() but additionally does an incremental update on pagelinks, imagelinks, externallinks, and templatelinks tables.

$linksUpdate = new \LinksUpdate( $this->getTitle(), $parserOutput, false );
$linksUpdate->doUpdate();

This would increase update accuracy and would allow to resolve Bug 20352 (currently Special:WhatLinksHere isn't updated which shows outdated links to pages no longer reside in a query or for deleted subjects).

When the LinksUpdatecall is invoked the LinksUpdateConstructed hook is executed.

Duplicates

It needs to be tested if setting $this->removeDuplicates = true reduces possible duplicates for the same Title object.

Reference

https://github.com/SemanticMediaWiki/SemanticMediaWiki/blob/master/tests/phpunit/integration/MwLinksUpdateWithSQLStoreDBIntegrationTest.php