Wikidata:WikidataCon 2017/Notes/Wikidata Toolkit: How to use Wikidata in Java
Title: How to use Wikidata in Java
Note-taker(s): Lucas
Speaker(s) edit
Name or username: Tpt
Contact (email, Twitter, etc.): @Tpt93 thomas
pellissier-tanon.fr
Documentation: https://www.mediawiki.org/wiki/Wikidata_Toolkit
Eclipse setup: https://www.mediawiki.org/wiki/Wikidata_Toolkit/Eclipse_setup
git clone https://github.com/Wikidata/Wikidata-Toolkit.git
Dump: https://people.wikimedia.org/~hoo/tmp/wikidata-20171028-all-first2500.json.gz
Abstract edit
Wikidata Toolkit is a Java library for accessing Wikidata and other Wikibase installations. It allows to create bots, to download and parse dumps in order to do, e.g., complex analysis of Wikidata content. The aim of this workshop is to give a quick introduction of the Wikidata Toolkit and show people an easy way to create bots and manipulate Wikidata dumps.
Collaborative notes of the session edit
WikidataToolkit
Wikidata client library in Java, developed in 2014/15 by TU Dresden
fast processing based on dumps (e. g. queries that cannot be done on WDQS)
easy editing, without all the complexity of the API
proof of concept of RDF mapping
nice Java objects for Wikidata items, can be used with Java Stream APIs
dump processing: automatically downloads most recent dump and processes it with your processor
RDF export is mostly outdated
some statistics utilities and lots of examples
hands-on session: with computer and an IDE (see slides for instructions)
TutorialExample will first fail because it’s in offline mode. You can disable offline mode (comment out L51), start the program, quickly stop it, and overwrite the partial downloaded file with the truncated one from above (“dump”).