_link_ should be a value function on whatever is in predicate

[rsinger]

Currently, the predicate property is required, but ignored for link fields.

For predicates that are URIs, you should be able to:

"fieldName":"fooLink",
"predicates":["foo:uri"]
"value":"_link_"

and it creates a fully qualified URI from the value of foo:uri.u (as opposed to _id.r).

There are a few questions, however:

1. What happens if there is more than 1 value in "predicates"?
2. What if "predicates" value is not a URI?

[scaleupcto]

I would say:

1. All of them get the _link_ treatment
2. I would say just output the literal value. Although it makes little sense to apply a _link_ to a literal, I'm not sure it should be a fail condition. Especially seeing that the predicates array could be a mixed economy of resources and literals, and bad data modelling decisions could even see different values same predicate having literal and resource versions.

[rsinger]

Yeah, both of those seem reasonable to me.