`ReactiveBeforeSaveCallback` not documented properly about spring-data-cassandra HOT 6 CLOSED

BeforeSaveCallback is called after transforming the object into a Statement (that's also why you get the Statement object). Before save is useful if you want to save a certain state to the database but you want to render a different object state after the save.

What you're looking for is ReactiveBeforeConvertCallback.

Looking at the documentation, the docs of events and callbacks could be a bit more descriptive and so I'm converting this ticket into a documentation ticket.

from spring-data-cassandra.

Thanks for the quick response. Changing ReactiveBeforeSaveCallback to ReactiveBeforeConvertCallback worked for me.

from spring-data-cassandra.

why is ReactiveAfterConvertCallback or afterLoadCallback not available? I am able to transform the entity before persisting using ReactiveBeforeConvertCallback but I have to transform again after reading from the database.

Should I be using a different interface?

from spring-data-cassandra.

ReactiveAfterConvertCallback isn't available as the entity row mapper doesn't expose a reactive mapping interface. Also, bulk-loading entities and creating Mono's creates a lot of GC pressure so we initially didn't want to expose a reactive AfterLoad/AfterConvert callback.

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I see. Initially, I implemented PropertyValueConverter and added @ValueConverter to a property before persisting. But that is also not getting invoked.

I understand @ValueConverter is part of spring data and I am using Spring data reactive cassandra.

@table("tablename")
public class TestTableClass{

@ValueConverter(..class)

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Thanks for bringing @ValueConverter up. It isn't supported yet and I created #1449 to keep track of the progress.

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