How to add a mapping namespace
As an example, we use a fictitious language with code "xx" and Wikipedia rank 44.
Note: more code changes will be needed for the first language code that contains a dash "-". Please update this guide.
Get language code and rank
Get the wiki language code and rank from http://s23.org/wikistats/wikipedias_html.php
namespace number: multiply the rank by 2 and add 200
talk namespace number: add 1 to the namespace number
Example: language code "xx", rank 44, namespace number 288, talk namespace number 289
CAUTION: If the calculated namespace number already exists for another language (because the ranking has changed) do NOT change the existing namespace number. Please find a neighboring or close enough number that works.
If 288 is in use, we choose other numbers, let’s say 298 and 299
Update the extraction framework
edit core/org.dbpedia.extraction.wikiparser.Namespace.scala
add something like this at the appropriate position in the code
"xx"->288
Commit and push the changes to default branch.
Update and restart the mapping server
Log onto the machine that's serving http://mappings.dbpedia.org/server/ URLs.
Stop the server:
ps axfu | grep java
Look for class ...server.Server, and then:
kill <process id>
Then update, compile and start the server:
cd /home/dbpedia-server/dbpedia/extraction_framework hg pull hg update mvn clean install --projects core,server cd server ../run server &>server-<YYYY>-<MM>-<DD>.01.log &
Update mappings wiki
Update the MediaWiki settings
Log onto the machine that is serving http://mappings.dbpedia.org/index.php URLs.
open htdocs/mappings/LocalSettings.php
add the following lines at the right position in the code
"xx" => 288
Restart the Apache server
edit mappings wiki sidebar
Edit MediaWiki:Sidebar.
Add a link at for the new language:
** {{fullurl:Special:AllPages|namespace=288}}|Mappings (xx)
c) edit http://mappings.dbpedia.org/index.php/Template:Class, http://mappings.dbpedia.org/index.php/Template:Datatype, http://mappings.dbpedia.org/index.php/Template:DatatypeProperty, http://mappings.dbpedia.org/index.php/Template:ObjectProperty
add two lines for label@xx
d) edit http://mappings.dbpedia.org/index.php/Mapping_Statistics and http://mappings.dbpedia.org/index.php/DBpedia_datasets
e) generate statistics for new language run RedirectExtractor, InfoboxExtractor, TemplateParameterExtractor (see dump/extraction.server.properties) run CreateMappingStats (launcher ‘stats’ in server/pom.xml) copy src/main/statistics/mappingstatistics_bg.txt to same folder on server Update and deploy sprint stuff.
