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Add inheritance module: SINGLE_TABLE vs JOINED vs TABLE_PER_CLASS on Hibernate 7.4.13.Final

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Same payment hierarchy mapped three ways plus @MappedSuperclass, run with plain Hibernate on H2.
Tests assert and write the generated DDL, the INSERT/SELECT SQL, row/insert/FK/nullability counts and
the three failures (NOT NULL on a SINGLE_TABLE subclass column, IDENTITY with TABLE_PER_CLASS, querying a
@MappedSuperclass); Bench writes indicative polymorphic-query timings. No docs folder: depth lives in the post.
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asmhatre
2026-10-24 10:02:28 +00:00
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README.md
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@@ -334,3 +334,12 @@ hibernate-demo/
## License
MIT — see [LICENSE](LICENSE).
## Standalone modules
Modules with their own `pom.xml` that run plain Hibernate without the Spring Boot parent above:
| Module | What it covers |
|---|---|
| [`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`) |