RMLMapper Wrapper - Faulty behaviour when using multiple targets with same base name.

[sevrijss]

Faulty behaviour when using multiple targets with same base name.

Description of the bug

The RMLMapper Wrapper doesn't seem to handle multiple targets with the same base name well. When 2 targets have the same base name but a different IRI, the target system seems to override targets.

To Reproduce

When using the rules provided below (rules.yml) and the corresponding data (data.csv) in matey.
Only 2 targets are visible in the output tab

• test
• stdout
  In the test target, only the triples for ratings_target are visible, presumably because they overwrite the previous triples.

Expected behavior

When using this config in matey, I would expect that I have 3 targets:

• http://example.com/test
• http://example2.com/test
• stdout

Files

rules.yml

prefixes:
  schema: "http://schema.org/"
  dbo: "http://dbpedia.org/ontology/"
  rdfs: "http://www.w3.org/2000/01/rdf-schema#"
targets:
  show_target: ["http://example.com/test~void", "turtle"]
  ratings_target: ["http://example2.com/test~void", "turtle"]
mappings:
  tv-show:
    sources:
      - ['data.csv~csv']
    s:
      - value: $(show)
        targets: show_target
    po:
      - [rdfs:label, $(title)]
      - [dbo:abstract, $(description)]
  review-show-link:
    sources:
      - ['data.csv~csv']
    s:
      - value: $(show)
        targets: ratings_target
    po:
      - [schema:review, $(review)]
  review:
    sources:
      - ['data.csv~csv']
    s:
      - value: $(review)
        targets: ratings_target
    po:
      - [schema:datePublished, $(reviewDate)]

data.csv

description,score,reviewDate,title,rating,review,show
desc_mando,4,2023-06-08,The Mandalorian,http://localhost:3000/example/ratings.ttl#rating-1,http://localhost:3000/example/ratings.ttl#review-1,http://dbpedia.org/resource/The_Mandalorian
desc_got,3,2023-03-12,Game of Thrones,http://localhost:3000/example/ratings.ttl#rating-2,http://localhost:3000/example/ratings.ttl#review-2,http://dbpedia.org/resource/Game_of_Thrones
desc_op,5,2023-01-21,One Piece,http://localhost:3000/example/ratings.ttl#rating-3,http://localhost:3000/example/ratings.ttl#review-3,http://dbpedia.org/resource/One_Piece_(TV_series)