gocd/gocd

Upgrade to Hibernate 5

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#10262 opened on Mar 13, 2022

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Description

Currently GoCD uses Hibernate 3.6. In order to unblock Spring Framework upgrade to Spring 5+, we need to move to to Hibernate 5. Our current Spring version, 4.3 does support at least Hibernate 5.0 to 5.2 (see here) and maybe later point releases.

If we could get to 5.3 we'd be getting back into a "supported" release, which would be ideal, as long as it works with Spring 4.3. There's nothing in the Spring docs to indicate other 5.x versions wont work.

https://hibernate.org/orm/releases/

Contributor guide

Tech stack
javaspring
Domain
backend
Issue type
refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
clear
Prerequisites
JavaHibernate 3.6 API knowledgeSpring 4.3 configurationGoCD codebase
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
15
Research direction
Start by reviewing the current Hibernate configuration in the GoCD codebase, particularly the pom.xml and any hibernate.cfg.xml files. Then consult the Hibernate 5 migration guides linked in the issue to identify breaking changes. The migration will require updating Hibernate dependencies in build files and adapting code for deprecated APIs. Pay special attention to the Spring ORM integration, as the project uses Spring 4.3.