5 Scope

The scope of this work item is to define an advanced and generic query method to filter resources, events etc in a oneM2M CSE to support RETRIEVE and DISCOVERY operations. It should also be applicable to other parts of the oneM2M specifications, such as in the procedures for, for example, <action> and <dependency> resource types where similar functionality is specified.

A solution could be the introduction of a simple but flexible query language based on s-expressions as presented in SDS-2022-0014R02 ("Improving Queries in Discovery and Retrieve Requests").

The solution must co-exist with the current filter methods, but may not be possible to avoid overlapping functionality since a new filter method will provide at least the same functionalities and more.