yarrrml-parser/test/condition-on-mapping fails with "long" subject form

[webhart]

Issue type: 🐛 Bug

Description

yarrrml-parser generates a rr:constant "[object Object]" instead of template. Side effect: conditional bnode generation is not possible.

Steps

Using this input file instead of https://github.com/RMLio/yarrrml-parser/blob/development/test/condition-on-mapping/rml/mapping.yml:

prefixes:
  idlab-fn: https://w3id.org/imec/idlab/function#
  grel: http://users.ugent.be/~bjdmeest/function/grel.ttl#

mappings:
  test:
    sources:
      - [test.csv~csv]
    # Different subject formulation than the original
    s: 
      value: http://example.com/$(id)
      type: iri
    condition:
      function: idlab-fn:equal
      parameters:
        - parameter: grel:valueParameter
          value: $(id)
        - parameter: grel:valueParameter2
          value: 2
    po:
      - [a, http://example.com/Test]

Environment

yarrrml-parser v 1.12.2