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Type:
New Feature
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Resolution: Fixed
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Priority:
Major
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Affects Version/s: V4.0_WD01
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Component/s: ABNF, URL Conventions
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None
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Environment:
[Applied]
We often have requests to support queries that span entitysets. Where navigation properties exist between the entitysets these provide a natural and convenient mechanism for building queries that span entitysets. However, where navigation properties are not present a way is needed to build such cross-entity spanning queries.
In the context of looking at aggregation we came up with a solution for doing this by considering the entitycontainer as the cross-product of the contained entitysets. You could then $expand the entitysets you wanted to join, and add a filter to specify the equivalent of the join condition. This seemed generally useful beyond just the scope of aggregation.