[ https://issues.oasis-open.org/browse/ODATA-818?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=62309#comment-62309 ]
Ralf Handl commented on ODATA-818:
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In Data Aggregation we distinguish between properties that have the null value, and properties that have been "aggregated away". The latter are not represented in the response.
> Omit properties whose value is null or the $metadata-defined default value
> --------------------------------------------------------------------------
>
> Key: ODATA-818
> URL: https://issues.oasis-open.org/browse/ODATA-818
> Project: OASIS Open Data Protocol (OData) TC
> Issue Type: Improvement
> Components: OData JSON Format, OData Protocol
> Affects Versions: V4.0_ERRATA02
> Environment: Simplified Payload
> Reporter: Ralf Handl
> Assignee: Ralf Handl
> Labels: Performance
> Fix For: V4.01_WD01
>
>
> Entities with many properties that are sparsely filled would benefit from optimizing the payload and omitting properties whose value is null.
> With odata.metadata=minimal the client can deduce from the context URL whether a property is missing due to not being part of the projection or due to being null.
> Maybe switch this on/off via a new preference in the Prefer header.
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