Refactor JournalAbbreviationRepository to use MVMaps #13403
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Closes #13385
Summary
This PR refactors JournalAbbreviationRepository to use persistent MVMap structures backed by H2’s MVStore, instead of regular in-memory HashMaps.
This change improves scalability, aligns with JabRef's architectural goals of modular and persistent storage, and prepares the repository for future features like runtime persistence or abbreviation editing.
Steps to test
Use JDK 17 or higher.
Run ./gradlew clean test and confirm that all tests pass.
Start JabRef and ensure journal abbreviation lookups still work as expected (e.g., getDefaultAbbreviation("Physical Review Letters") returns Phys. Rev. Lett.).
Optionally test abbreviation loading from a .mv file to confirm persistent structure reads correctly.
Mandatory checks
I own the copyright...
Change in CHANGELOG.md described in a way that is understandable for the average user
→ Added under “Changed” section: Switched journal abbreviation repository to MVMap-based storage backend.
Tests created for changes (if applicable)
→ Existing tests for abbreviation functionality still apply. Logic reuse verified.
Manually tested changed features in running JabRef
[/] Screenshots added in PR description
→ Not applicable (non-UI change)
Checked developer's documentation
→ Repository structure and persistence changes considered.
[/] Checked documentation
→ No user-visible behavior affected. No update needed.