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Avoid multi-exposing Elements in views #2478

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Avoid multi-exposing Elements in views #2478

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4 changes: 4 additions & 0 deletions java/working-with-cql/query-execution.md
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Expand Up @@ -289,6 +289,10 @@ UPDATE entity OrderView2
Path expressions navigating *associations* (*header.customer.name*) are [not writable](#cascading-over-associations) by default. To avoid issues on write, annotate them with [@readonly](../../guides/services/constraints#readonly).
:::

::: warning Avoid multi-exposing Elements via Aliases
Expose an element only once: either remove the original from the projection or annotate the alias with [@readonly](../../guides/services/constraints#readonly) to avoid write conflicts.
:::

### Delete through Views { #delete-via-view }

The CAP Java runtime attempts to resolve [deletes](./query-api#delete) on CDS views to the underlying persistence entity definitions and the [write through views](#updatable-views) restrictions apply accordingly.
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