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1. Introduction
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- Project structure
- Spring configuration
- Services
- Test cases
2. Issues
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- Generics, simple queries, pagination (no metadata), is new?, arbitrary queries
- Approach: step by step refactoring -> introduce Spring Data JPA
5. AccountRepository
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- replace save(…)
- findByCustomer -> show log -> method created from method name
- explain proxy mechanism, method signature possibilities (@Param, return types)
4. Explain general proxy mechanism, SimpleJpaRepository
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- show JpaRepository interface
- findAll(Pageable pageble)
3. CustomerRepository
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- add dependency to CustomerServiceImpl
- replace findById, findAll, save
- run test
- explain extended method signature possibilities (Pageable, Sort)
- replace findByLastname(Pageable pageable) in CustomerService
6. First summary
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- implementation got obsolete
- switch to after package
7. Querydsl / Specifications
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- Introduce Querydsl
- Show Maven setup
- Show predicates
- Integrate test case
7. Custom implementation
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- copy interface and implementation (hint to visibility)
- adapt AccountRepository
- copy test case
- explain implementation class lookup
8. JDBC implementation (optional)
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- copy implementation -> configuration necessary
- copy XML
- run tests -> fail (shows that JDBc bean is used)
- fix SQL by adding FROM -> tests run again
9. Auditing (optional)
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- show auditing test from Hades sample project
10. Back to slide deck
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