draft-core-yang-library: Use empty type for revisionless modules - #174
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draft-core-yang-library: Use empty type for revisionless modules#174vvilimek wants to merge 1 commit into
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It is common for the YANG modules of NETMOD and NETCONF WGs to have
a lot of string-based types leafs. This may be cause by the fact that
XML and JSON does not have very rich data model, and/or by the fact
that YANG 1 does not support empty type as a list key.
From the YANG 1.1, it is possible to use empty type for list key leafs.
Therefore we utilize this for modules without revision statement to
identify such modules in the module sets. We found this type better
suited than the prevision string { length 0; } type.
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This type is only significant for import-only modules. The import-only modules are always referenced by the revision, if the referenced module has one. |
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It is common for the YANG modules of NETMOD and NETCONF WGs to have a lot of string-based types leafs. This may be cause by the fact that XML and JSON does not have very rich data model, and/or by the fact that YANG 1 does not support empty type as a list key.
From the YANG 1.1, it is possible to use empty type for list key leafs. Therefore we utilize this for modules without revision statement to identify such modules in the module sets. We found this type better suited than the prevision string { length 0; } type.
The empty type is encoded as CBOR
nullwhich uses 1 byte, same length as empty text string ("").