Project:RedirectionScript

SPARQL queries

Count number of items that redirect to another item

SELECT (COUNT (DISTINCT ?o) AS ?count)
WHERE
{
   ?o owl:sameAs ?sa .
}

Get mapping of original items to the ones they were redirected to

This query gets all original items (?o) that get redirected to another item (?sa). We need these results because for each original item, the script looks for items that link to it. Then, it replaces the link on these original items with a link to the ?sa item.

SELECT DISTINCT ?o ?sa
WHERE
{
  ?o owl:sameAs ?sa .
}

Get all items that redirect to somewhere else and are still referenced in another item

Exclude those without a label to exclude other reference pages

SELECT DISTINCT ?o 
WHERE
{
  ?o owl:sameAs ?sa .
  ?new ?p ?o .
  ?o rdfs:label ?label .
}

Script

https://github.com/MaRDI4NFDI/docker-importer/blob/main/bot_scripts/reroute.py

The script takes as input a csv file with the output of the second sparql query that maps old ids to new ids.

Potential Problems

If for a specific item, the problem is not fixed after executing this script, it might be that the item was not correctly indexed. This can be fixed by using Project:RerunUpdate and then rerunning the script.