[OASIS Issue Tracker] (ODATA-1061) Allow key expressions in Path constructs within annotations

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

Ralf Handl created ODATA-1061:
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             Summary: Allow key expressions in Path constructs within annotations
                 Key: ODATA-1061
                 URL: https://issues.oasis-open.org/browse/ODATA-1061
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Improvement
          Components: CSDL JSON , CSDL XML
    Affects Versions: V4.01_CSD01
         Environment: Proposed
            Reporter: Ralf Handl
             Fix For: V4.01_CSD02


With ODATA-960 we added absolute paths to the Path syntax, which allows referencing properties of a singleton, e.g.

<Annotation Term="Display.visible" Path="/this.container/Settings/FeatureXxxIsAvailable" />

A logical extension is allowing key expressions to reference entities and their properties within an entity set:

<Annotation Term="Display.visible" Path="/this.container/SettingsCollection('FeatureXxx')/IsAvailable" />

In addition to literal values the key values can be provided using path expressions. This enables (a third party) to address content where the service author forgot to define a navigation path:

<Annotation Term="Display.title" Path="/this.container/Products(ID=ProductID)Name" />



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