Lambda entity callbacks no longer invoked

[hubertvolz]

Hi everyone,

as mentioned on stackoverflow issue the behaviour of spring-data-jdbc changed.

If you wanted to use a BeforeConvertCallback to assign a custom id to an entity, you could do this in spring boot versions up to 3.0.5. But later versions, 3.1.0 for example, do not use this callback anymore.

A repo to reproduce: Repo. If something is unclear, don't hesitate to reach out to me.

best regards
hubert

[mp911de]

Sorry for inconvenience, this is a regression from #2812. Please avoid lambdas as workaround.

[mp911de]

The difference between our tests stems from our tests using StandardMethodMetadata (reflection) while the reproducer uses SimpleMethodMetadata (ASM classreading). StandardMethodMetadata provides the Method object for the bean method while ASM classreading does not provide any reflection metadata to resolve the bean method return type.

[mp911de]

Another workaround is moving the lambda callbacks into a non-@Configuration class that you import via @Import(…). Using @Configuration classes uses ASM-based parsing while non-@Configuration classes fall back to reflection.

[mp911de]

Here's a reduced reproducer that walks through bean definitions and prints their type to the console: https://gist.github.com/mp911de/435d0b8259ac41671edbd40aaae4c8ba

[mp911de]

Using merged bean definitions is actually doing what we're looking for.