NTAs do not contribute to collections

[Axel Mårtensson]

NTAs do not contribute to collection attributes because they do not participate in the survey I have made a test that exposes this in a new branch nta-contrib-coll in my fork of jastadd-test. Would it be useful to have NTAs contributing to collections?

[Jesper Mattsson]

This is a bit unclear, since you might not want to expand previously unexpanded NTAs for collection attributes. I'd say it depends on the situation what you'd want here.

[Axel Mårtensson]

True. I changed the issue to discuss NTAs in general

[Jesper Öqvist]

NTAs can contribute to a collection if you use this version of the contributes declaration:

N1 contributes nta getMyNta() to N2.a();

In the test case you linked, you could use this:

A contributes nta b() to A.integers();

This is documented in the reference manual.

The feature was added in version 2.2.1.

Also, we have tests for this in the test suite. For example coll/custom_survey_07.