functions in Logical Views

[elsdvlee]

Expression fields are expression maps. An expression map can have also a function execution, on the condition that the engine also supports the RML-FNML module.
There is no test case yet with functions in expression fields. Due to the modular structure of RML I am not sure where such test case must be added: in RML-FNML or in RML-LV. Such test case is only relevant for RML engines implementing RML-FNML and RML-LV. Without such test case, however, the risk is that functions in expression fields will not be implemented by RML engines implementing both modules.

@bjdmeest, @pmaria, @chrdebru, @dachafra I would value your opinion about where to add such test cases. How should be handle test cases combining RML modules?

[bjdmeest]

Hah, I just came across kg-construct/rml-fnml#3 that has the same issue.

I would vote to create maybe a rml-composite-test-cases repo where we put these kinds of tests (possibly categorized where we assume CORE and basic IO is always implemented, i.e. in a folder called FNML-LV)

[pmaria]

Sounds good, I propose calling it rml-integration-test-cases.