Fix ClassCastException during initial schema check

[Eistern]

In the scope of this PR, we will fix ClassCastException that happens due to column types being marked as NOT NULL

[nvamelichev]

Hi! Good catch! 👍

But please remember that YOJ was not written to work with NOT NULL columns, so you might need to also tune the YdbSchemaCompatibilityChecker, error handling in YdbValidator (to handle "value cannot be null" errors from YDB) and also code generation in all of YqlStatement implementations etc. These fixes should be done in other PRs, of course.

[nvamelichev]

@Eistern @OlegOAndreev Do you need a release with this fix ASAP? Do you need a backport to YOJ 2.5.x series (because YOJ 2.6.x had a major refactoring in filter expression handling, and Cloud Java is unlikely to have migrated to 2.6.x already)?

[OlegOAndreev]

It would be nice to have this backported to 2.5.x, yup.

[nvamelichev]

Fix has been backported to 2.5.10, the new version should appear on Maven Central in the following hours.

https://github.com/ydb-platform/yoj-project/releases/tag/v2.5.10
https://central.sonatype.com/search?q=tech.ydb.yoj&sort=published

[Eistern]

Hi @nvamelichev,

Thank you for handling the backport! I've noticed that version 2.5.10 isn't available on Maven Central yet. Could there be an issue with the release pipeline?

The action (https://github.com/ydb-platform/yoj-project/actions/runs/12030357956) shows as completed successfully. However, I see that it doesn't include a commit ID and version in the description, unlike the previous runs. Could you please check if everything went as expected?

Thank you!

[nvamelichev]

Maybe the 2.5.x branch did not have the changes to release staged artifacts immediately. I'll look into it.

[nvamelichev]

@Eistern ✔️ I've rebuilt v2.5.10 and released the staging repository to Maven Central. It should appear in a few hours.

[nvamelichev]

2.5.10 is now on Maven Central:
https://central.sonatype.com/artifact/tech.ydb.yoj/yoj-repository-ydb-v2/2.5.10