Add migration-5-to-7 module: Hibernate 5.6.15 vs 7.4.14 jar diff, compile checks, schema defaults and cheat-sheet snippets

Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01YPgGH6aMbSLANL3E2HHmS6
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2026-10-25 19:17:24 +00:00
co-authored by Claude Sonnet 5.5
parent 357ba84e5c
commit aea104f021
57 changed files with 5187 additions and 0 deletions
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@@ -344,3 +344,4 @@ Modules with their own `pom.xml` that run plain Hibernate without the Spring Boo
| [`h8-preview`](h8-preview/) | Hibernate ORM 8 beta against Hibernate 7: what breaks |
| [`inheritance`](inheritance/) | `SINGLE_TABLE` vs `JOINED` vs `TABLE_PER_CLASS` vs `@MappedSuperclass`: generated DDL, SQL, failures and timings (Hibernate `7.4.13.Final`) |
| [`locking`](locking/) | Optimistic (`@Version`, retries) vs pessimistic (`PESSIMISTIC_WRITE`, `NOWAIT`, `SKIP LOCKED`) locking, lost updates and deadlocks on H2 (Hibernate `7.4.14.Final`) |
| [`migration-5-to-7`](migration-5-to-7/) | Hibernate `5.6.15.Final` vs `7.4.14.Final`: jar diff, Hibernate 5 code compiled against both, schema defaults, `hbm2ddl` validation of a Hibernate 5 schema, and cheat-sheet snippets |