Hibernate - @ManyToOne strange behavior

Describe the bug Imagine the relationship described below: “one” User -> “many” Message In Message class, there is @ManyToOne(fetch = FetchType.LAZY, optional = false) User user; annotation. When a new Message instance are created, we need to persist the object on database with related User “id”. I find the related User using EntityManager.find(clazz, id)

Expected behavior Insert the new Message on database, do not make any operation with User

Actual behavior After insert Message, Hibernate tries to update the User instance without any field.

To Reproduce Steps to reproduce the behavior:

1. Create a User instance on database and persist.
2. In other transaction, create a Message and set the existent User
3. Persist the Message

Configuration

# We are using Postgres Database

Can reproduce issue only in quarkus 0.23x, on 0.22 works fine with same config.

[Sanne]

Hi @rafaelkloss , if you could share a little project reproduing it we will debug it.

Alternatively, could you try building a snapshot from Hibernate ORM master and try that? We already fixed a related issue, so I’m wondering if it’s the same (or not …)

[rafaelkloss]

Hi folks, thanks for your effort, this is a great new ! Very best 😃

Em sex., 15 de nov. de 2019 às 08:28, Sanne Grinovero < [e-mail]> escreveu:

hi @rafaelkloss https://github.com/rafaelkloss we merged the Hibernate ORM upgrade, this should be fixed now thanks to @dreab8 https://github.com/dreab8 .

Since he ported your test to be incorporated into the ORM integration tests, I’m closing this one but please could you check on your original case as well 😃

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