If you are running a copy of Wikibase, we have split out data model code
from WikibaseLib into a separate extension. (which can be used independent
of MediaWiki)
You need to have the WikibaseDataModel extension in the extensions
directory. It will automatically be loaded by Wikibase.
https://gerrit.wikimedia.org/r/#/admin/projects/mediawiki/extensions/Wikiba…
If you are missing WikibaseDataModel, then you may see an error:
Fatal error: Class 'Wikibase\EntityId' not found
Additionally, the WikibaseQuery, WikibaseQueryEngine and WikibaseDatabase
components have been split into separate extensions. These are only needed
for the newest experimental query stuff.
https://gerrit.wikimedia.org/r/#/admin/projects/?filter=Wikibase
To make things easier, Wikibase has a composer.json file to manage the
dependencies and you can use that, if you like.
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Katie Filbert
Wikidata Developer
Wikimedia Germany e.V. | NEW: Obentrautstr. 72 | 10963 Berlin
Phone (030) 219 158 26-0
http://wikimedia.de
Wikimedia Germany - Society for the Promotion of free knowledge eV Entered
in the register of Amtsgericht Berlin-Charlottenburg under the number 23
855 as recognized as charitable by the Inland Revenue for corporations I
Berlin, tax number 27/681/51985.