[YANGTOOLS-1392] Reformulate ImmutableNodes.fromInstanceId() in terms of NormalizedNodeStreamWriter

Duplicate — Tue, 10 May 2022 16:29:46 +0000

We have a way to construct a NormalizedNode hierarchy, which is sadly tied to a particular implementation. There are a few use cases, where we really mean to push the state of a YangInstanceIdentifier into a NormalizedNodeStreamWriter and then emit a number of NormalizedNodes and close the identifier.

Refactoring this utility method would allow users side-step the NormalizedNode representation and ditch quite a bit of complexity – with the following construct:

YangInstanceIdentifier id = ...;
NormalizedNodeStreamWriter writer = ...;

try (var nnWriter = NormalizedNodeWriter.forStreamWriter(writer)) {
  try (var idCtx = nnWriter.enterPath(id)) {
     // here we have emitted the events to 'enter' structure indicated by the id
     // and can proceed to, for example
     nnWriter.writeNormalizedNode(...);
   }
   // here we are again outside of the id, having rolled back the changes
}

OpenDaylight JIRA

[YANGTOOLS-1392] Reformulate ImmutableNodes.fromInstanceId() in terms of NormalizedNodeStreamWriter