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oslc-op / oslc-specs

OSLC OP specifications and notes
https://open-services.net/specifications/
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OSLC Link Discovery Management - optional restriction for predicates #598

Open MartinUlrich opened 10 months ago

MartinUlrich commented 10 months ago

For the Link Discovery Service restriction based on the Link Predicates is considered. Here the question shall be discussed, if the Link Predicate/s are mandatory or optional.

In todays IBM LDX implementation the link predicate is mandatory, as the client in any case is explicitly interested in defined link predicate/s.

Still the use case is likely, that a client is interested in any links pointing to the objects e.g. visualized on the screen.

Therefore the predicate shall be optional.

In case of overload a server can respond with e.g. bad request

DavidJohnHoney commented 10 months ago

This has potential performance and implementation consequences for implementations. Finding all links of any type could be very inefficient and lead to scalability and performance issues. I recommend that the first version of the LDM specification specifies the link types are mandatory. This matches the current implementation in IBM Rational ELM.