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Ralf Handl commented on ODATA-1075:
-----------------------------------
Carrying over questions from ODATA-1002
In reviewing the application, three questions came up:
1) is [1,1,2] subsetof [1,2] ? (do elements of the left operand have to occur at least as many times in the right operand)
For ordered collections:
2) is [3,1] subsetof [4,1,3]? (does order matter)
3) is [4,3] subsetof [4,1,3]? (can sequence have gaps)
For unordered collections both #2 and #3 should be true
> Introduce subsetof operator for checking whether a collection is a subset or equal to another collection
> --------------------------------------------------------------------------------------------------------
>
> Key: ODATA-1075
> URL: https://issues.oasis-open.org/browse/ODATA-1075
> Project: OASIS Open Data Protocol (OData) TC
> Issue Type: Bug
> Components: URL Conventions
> Affects Versions: V4.01_CSD02
> Environment: Applying
> Reporter: Ralf Handl
> Fix For: V4.01_CSD02
>
>
> Currently we "overload" the in operator to be "subset of" if the left operand is a collection.
> This would block us from introducing collections of collections, and checking whether a collection is an item of a collection of collections.
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