Spring Data Repositories -- A Deep Dive
summary
Walk-through of a stepwise GitHub sample shows how Spring Data turns interfaces into working DAOs: Java config + HSQL + JPA entities produce auto-wired beans via @EnableJpaRepositories, tests run green, and SimpleJpaRepository supplies CRUD, paging and sorting. Method names generate queries, @Query or named-query files override them, and redeclaring methods changes transaction settings. Adding QueryDSL generates type-safe predicates for flexible filtering; a custom interface+implementation (convention-named) injects specialized logic as a custom repository implementation. Modules: JPA, MongoDB, Neo4j, GemFire; Spring Data REST integration demonstrated.
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chapters (11)
- 0:00Introduction and setup
- 4:45JPA infrastructure
- 8:06Repository abstraction
- 13:33CRUD repository
- 23:25Paging and sorting
- 27:34Method redeclaration
- 33:50Custom base interfaces
- 48:04Manual queries
- 55:15Query DSL integration
- 1:04:53Custom implementation
- 1:24:21Conclusion and Q&A
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