[OASIS Issue Tracker] Commented: (ODATA-370) Disallow Nullable facet for collection-valued properties

[ http://tools.oasis-open.org/issues/browse/ODATA-370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=33301#action_33301 ] 

Evan Ireland commented on ODATA-370:
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If we follow this line of reasoning, I am wondering if empty string/binary should be distinguishable from null, or not?


> Disallow Nullable facet for collection-valued properties
> --------------------------------------------------------
>
>                 Key: ODATA-370
>                 URL: http://tools.oasis-open.org/issues/browse/ODATA-370
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: Bug
>          Components: OData CSDL
>    Affects Versions: V4.0_CSD01
>         Environment: [Proposed]
>            Reporter: Ralf Handl
>             Fix For: V4.0_CSD02
>
>
> We already disallow the Nullable attribute for collection-valued navigation properties because we don't want to distinguish between an empty collection and a "null" collection.
> Let's do the same for properties. It's a philosophic distinction anyway. If I collect stamps and give away all of them: do I still have an empty collection, or no collection?

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