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IDProjectCategoryView StatusDate SubmittedLast Update
0008220TDLNew Featurepublic11-01-2024 19:1311-01-2024 19:13
ReporterPhilip Makedonski 
Assigned ToPhilip Makedonski 
PrioritynormalSeveritymajorReproducibilityhave not tried
StatusassignedResolutionopen 
PlatformOSOS Version
Clause Reference(s)Part 1, Clause 6.3.2 + related
Source (company - Author)Martti Käarik, Elvior
Summary0008220: Add MemberReference to ParameterBinding to support path expressions
DescriptionCurrently it can be cumbersome to specify only deeply nested values in data uses in particular, for example given a data instance:

//base instance
    s1 ss1 (
        //TODO: do we need this here as well?
        f1 = "a",
        f2 = (
            p1 = "a",
            p2 = "b",
            p3 = (
                o1 = "x",
                o2 = "y",
                o3 = (
                    r1 = "z"
                ),
                o4 = ["a", "b"]
            )
        )
    )
 
If in a data use we need to override r3 it will require at least specifying all the parent structures, e.g.:

    tester::g sends ss1 (
        f2 = (
            p3 = (
                o3 = (
                    r1 = "z"
                )
            )
        )
    )
    to sut::g

Apart from that, the semantics are not quite clear, especially when it comes to collections, e.g. if a member of a collection item is to be overridden, is the entire collection item overridden or just the member? Is the entire collection overridden or just the item in question?

In other languages so called "path-expressions" are a common shorthand syntax to overcome some of the issues. They could also help resolve the unclear semantics where the expanded syntax can be used to reassign entire structures and the path-expression to override individual members. The above would be condensed to:

    tester::g sends ss1 (
        f2.p3.o3.r1 = "z"
    )
    to sut::g

See also https://labs.etsi.org/rep/top/ide/-/issues/56 [^] and https://labs.etsi.org/rep/top/ide/-/issues/59 [^]
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Date ModifiedUsernameFieldChange
11-01-2024 19:13Philip MakedonskiNew Issue
11-01-2024 19:13Philip MakedonskiStatusnew => assigned
11-01-2024 19:13Philip MakedonskiAssigned To => Philip Makedonski

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