[YANGTOOLS-874] Define YANG cardinality extensions

Tue, 3 Apr 2018 03:52:47 +0000

We are reusing leaf nodes for well-known-low-cardinality types (~~YANGTOOLS-494~~). In order to cover more types we need a YANG extension which can be used to hint cardinality.

There are three extensions we need:

cardinality:exact, where the set of possible matching values for a type is known at design time. This can be attached to a leaf, leaf-list and typedef. The size of the set should be specified as the argument.
cardinality:low, where the set size is known, but expected to be low – such that it can be used with LRU interners. This can be additionally attached to container, input, output, notification, case, choice and list statements.

OpenDaylight JIRA

[YANGTOOLS-874] Define YANG cardinality extensions