Supported MIME-types - no MARCXML support on concept level

[joelit]

URL address of the page where you encountered the problem

http://localhost/Skosmos/rest/v1/yso/data?format=application%2Fmarcxml%2Bxml&uri=http%3A%2F%2Fwww.yso.fi%2Fonto%2Fyso%2Fp8627&lang=fi (You can substitute http://localhost/Skosmos/ with https://test.dev.finto.fi/ )

Description of the problem

We support certain MIME-types, and otherwise an error message is displayed, e.g. http://localhost/Skosmos/rest/v1/yso/data?format=foo&uri=http%3A%2F%2Fwww.yso.fi%2Fonto%2Fyso%2Fp8627&lang=fi to see the error message for an unsopported MIME-type.

If you use parameter format=application%2Fmarcxml%2Bxml on a concept level, the system does not return MARCXML data, as it's not actually supported on a concept level. Instead, RDF/XML is returned.

Behaviour similar to the format=foo case is expected in the concept-level MARCXML (Error message and error code 406 should be given instead of data). The support for MARCXML should only be offered on the vocabulaty level.