[OASIS Issue Tracker] Created: (ODATA-431) Add $expand=*, $expand=*/$ref, $expand=*($levels=...) for expanding all navigation properties

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

Add $expand=*, $expand=*/$ref, $expand=*($levels=...) for expanding all navigation properties
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                 Key: ODATA-431
                 URL: http://tools.oasis-open.org/issues/browse/ODATA-431
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Improvement
          Components: OData URL Conventions 
    Affects Versions: V4.0_CSD01
         Environment: [Proposed]
            Reporter: Ralf Handl
             Fix For: V4.0_CSD02


$select=* allows selecting all structural properties, including dynamic structural properties.
$expand=* would allow expanding all navigation properties, including dynamic structural properties.

This is a not only a convenient shortcut, it also covers cases where metadata inspection wouldn't help: dynamic navigaition properties.

In combination with the suffix /$ref this includes entity references for all related entities.

In combination with the $level operator this allows expanding an entity graph in all directions up to the given distance to the central entity.

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