| Source and output definition |
Defining output |
Shape expression |
Subject and predicate-object definitions |
Generate clause |
|
IRIs generation |
Prefix and value generation expression (concatenation) |
Prefix and value generation expression (array) |
Variable (previous use of concat function) or string interpolation |
|
Datatypes & Language tags |
Yes |
Yes |
Yes |
| Multiple results from a query |
|
Treated like an array |
Treated like an array |
Need to iterate over the results |
| Transformations |
|
Limited (Matchers and String operators). |
FnO hub |
Functions for strings and extension mechanism |
| Output formats |
Output |
RDF |
RDF |
RDF and any text-based format |
|
Translation |
RML |
RML |
No translation offered |
| Link between mappings |
|
Shape Linking and JOIN keyword (do not fully cover YARRRML feature) |
Yes (conditions allowed) |
Nested generate clauses, filter clauses and extension mechanism |
| Conditional mapping generation |
|
No |
Yes (Function and conditional clause) |
Yes (Filter clause and extension mechanism) |
