Does the @Core.AutoExpand annotation in SAP CAP actually do something?

[nicoschoenteich]

Hi everyone!

I have this very basic schema definition:

entity Apps : managed, cuid {
    views : Composition of many Views
                on views.app = $self @Core.AutoExpand;
};

entity Views : managed, cuid {
    app      : Association to one Apps;
};

I want to auto expand the "views" whenever I call "/Apps", meaning "/Apps" should always be treated like "/Apps?$expand=views". I found this "@Core.AutoExpand" annotation, which seems to do exactly that:

Unfortunately, it doesn't seem to work. The auto expand doesn't happen. Does this annotation actually do something? Or am I as a developer responsible to implement the feature, and the annotation is just a standardized label for this feature? But, this isn't how annotation usually work, right?

I appreciate your help!

Best, Nico

[Ivan-Mirisola · Accepted solution]

Hi nicolai.geburek,

This annotation isn't implemented on CAP NodeJS.

The OData contortion has made this annotation available via ODATA-795. Which is why you are seeing this documentation.

For more information, please read the following:

https://github.tools.sap/cap/dev/issues/896

Best regards,
Ivan

[nicoschoenteich · Accepted solution]

Thank you for the answer. For some reason my research didn't lead me to those existing issues...

The link you shared is internal, which works for me, but does not for everyone. For everyone else: You didn't miss much, the feature is simply not (yet) implemented.