Can Validation.DerivedTypeConstraint specify collection-valued types?

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    • Type: Improvement
    • Resolution: Fixed
    • Priority: Major
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    • Affects Version/s: None
    • Component/s: Vocabularies
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      Include two statements in the term definition:

      Allow Validation.DerivedTypeConstraint to specify Collection(...), but only if the declared type is Edm.Untyped, because that is the only case where the property can be collection-valued or not.

      If the declared type of a property is Collection(ns.T1), then "@Validation.DerivedTypeConstaint": ["ns.T2"] means that  instances of ns.T2 are allowed in the collection.

      PROPOSED WORDING:
      If the element being annotated is collection-valued, the DerivedTypeConstraint specifies the types allowed for members of the collection; it does not specify the Collection() wrapper. The QualifiedTypeName may only include the Collection() wrapper if the declared type of the element being annotated is Edm.Untyped.

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      Include two statements in the term definition: Allow Validation.DerivedTypeConstraint  to specify Collection(...) , but only if the declared type is Edm.Untyped , because that is the only case where the property can be collection-valued or not. If the declared type of a property is Collection(ns.T1) , then  "@Validation.DerivedTypeConstaint": ["ns.T2"]  means that  instances of  ns.T2  are allowed in the collection. PROPOSED WORDING: If the element being annotated is collection-valued, the DerivedTypeConstraint specifies the types allowed for members of the collection; it does not specify the Collection() wrapper. The QualifiedTypeName may only include the Collection() wrapper if the declared type of the element being annotated is Edm.Untyped.
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      https://github.com/oasis-tcs/odata-vocabularies/pull/189

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      https://github.com/oasis-tcs/odata-vocabularies/pull/189

      The term DerivedTypeConstraint takes a collection of QualifiedTypeNames. Can these also contain collection-valued types, as in

      <Annotation Term="Validation.DerivedTypeConstraint">
 <Collection>
  <String>Edm.PrimitiveType</String>
  <String>Collection(Edm.PrimitiveType)</String>
 </Collection>
 </Annotation>

      ?

      If the declared type is single-valued, derivations cannot be collection-valued.

      If the declared type is Collection(ns.T1), which is correct: "@Validation.DerivedTypeConstaint": ["ns.T2"] or "@Validation.DerivedTypeConstaint": ["Collection(ns.T2)"]?

      If the declared type is Edm.Untyped, both single- and collection-valued derived types are possible.

            Assignee:
            Unassigned
            Reporter:
            heiko.theissen
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              Created:
              Updated:
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