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Used Spring Data JPA repositories and entities for conversation threads, messages, and approval-gated writes, keeping state in the platform database instead of custom in-memory storage.
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Changed the repository to extend the plain marker Repository interface and expose only save and finder methods, which removes delete operations at compile time. Existing code and tests needed no changes.
Extended the order repository with a gram search while keeping the exact external-reference lookup. The bulk id load used after ranking takes an iterable, and that overload was easy to describe incorrectly while writing the cap test. The repository was revised by hand and never executed against a database.
Batch, file, line, and issue storage was expressed as repositories on the existing data stack. The code compiled and the suite passed. No database was started, so entity mapping and repository queries were not executed against a live schema.
I mapped mandate and signer state with Spring Data repositories and transactions. Saving a new entity and updating it after the first transaction closed left a detached instance, so a later save had to merge, and signer updates had to stay on the persistent collection. I split failure handling into its own transaction. Unit tests mocked the repositories and passed; they did not run against a database.
The benchmark called the real repository save path. Assigned identifiers on a parent with new children were merged instead of inserted, so the write failed until identifiers were generated on persist. A leaf entity saved without that change.
Added a derived repository finder that filters on the subscriber identifier and returns matches newest first. The method name expressed the filter and sort with no custom query or configuration change. The finder was never executed, so query behavior was not observed.
I added a custom repository fragment (an interface plus an Impl class) to an existing repository for a dynamic JPQL search with keyset pagination and escaped LIKE prefixes. The fragment was picked up automatically, and the repository tests passed.
Added a paged finder for subscriber identifier alongside an existing order-identifier lookup and declared secondary index metadata while leaving schema changes with the database process.
Added a derived finder for subscriber identifier returning multiple rows alongside the existing unique order lookup, and declared supporting index metadata while keeping schema validation mode.
Added a derived query method that filters by subscriber, sorts newest first and takes a Pageable to cap results. It was used by a new read-only operations controller. Derived queries meant no hand-written SQL. Nothing was compiled or run because the environment had no JDK.
Added a native-query repository method with named parameters to run an Oracle Text CONTAINS search, alongside a service and controller. The code couldn't be compiled or tested because the environment had no JDK or Maven.
Spring Data JPA was the existing persistence layer. It was extended with a subscriber lookup and a modifying single-row update keyed by order identifier, so search and state write-back stayed on the current repository API. The repository compiled with the API module tests. The derived queries were not executed against a database.
Added a derived query method that finds orders by subscriber ID, newest first, with Pageable paging. It is a one-line interface method, but it was never compiled or run against the database in this environment.
Saving a new entity with a caller-assigned identifier was treated as a merge rather than an insert, so the timed call never persisted a row. The failure appeared as a mapping error around a unidirectional one-to-many with persist cascade, which did not say that the assigned id was the cause. Implementing the persistable contract so a new entity reports itself as new made the insert path run, and later measurements completed.
Added a derived paged finder for a non-unique subscriber field to back the new search endpoint, with pagination and input length aligned to the column. The finder compiled and behaved as expected through mocked web tests; it was not exercised against a live database.
I added a repository for outbox rows and native queries for per-account locks and a single-writer claim. The first lock helper asked for a list result from a scalar database function and was corrected before execution. The database-backed test never ran, so those queries were not observed.
I extended the existing repository with a paged subscriber lookup and left the new index as a SQL script because the application only validates the schema. Service tests covered the search contract, but no database session ran.
I added a lock-for-update repository method and called it in account-id order inside the posting transaction so concurrent posts cannot reorder one account's events. Tests stubbed the finder and checked that call order. The query was never executed against a database.
Repository save treated a new journal entry with a constructor-assigned id as a detached instance and merged it. Merge then failed because the new child rows were not in the database yet. Marking that instance as new made the insert and the outbox write persist in one unit of work.
Repositories and a locked lookup were used to keep advice rows and journal posting consistent. A status change written in one persistence context did not appear on the instance loaded earlier, so the posted state had to be read back. Tests that stub both lookups with one object hide that split. After the read-back, the service tests passed.
I added a derived repository finder that loads one subscriber's orders newest first, matching the equality-lookup style already used for order id. The method name was enough to express the filter and sort. The query was not executed.
I added a derived repository method that filters by subscriber identifier and returns matching orders newest first, in the same style as the existing order-identifier finder. An unknown subscriber is intended to return an empty list. The method was not compiled or invoked.
Declared a derived repository finder that returns a subscriber's orders newest first. The sources compiled in the passing test build. No database was available, so the generated query was never executed.