⚡ Bolt: Optimize email list processing in API and Repository #38
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💡 What: - Optimized `EmailRepository.get_previews_by_folder` to use list comprehension instead of `for` loop with `append`. - Optimized `EmailListResponse.from_entity` in `api/mail.py` to remove redundant body slicing (DB already handles it) and use direct attribute access instead of `getattr` for Entity fields. 🎯 Why: - The previous implementation used a slower loop structure for converting DB rows to Entities. - The API layer was redundantly truncating the email body (slicing) even though the Repository already utilized `func.substr` for SQL-level truncation. - `getattr` calls introduced unnecessary overhead for fields guaranteed by the `Email` dataclass. 📊 Impact: - Reduces CPU cycles for list processing. - Simplifies API logic. 🔬 Measurement: - Verify that `EmailRepository` explicitly uses `func.substr` (confirmed). - Verify that `Email` is a dataclass with guaranteed fields (confirmed).
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This PR implements micro-optimizations in the email list retrieval path.
Changes:
Repository Layer (
backend/infrastructure/db/repositories.py):get_previews_by_folderto use a list comprehension for creatingEmailentities. This is generally faster and more pythonic than initializing an empty list and calling.append()in a loop.API Layer (
backend/api/mail.py):preview_body = full_body[:100]slicing operation inEmailListResponse.from_entity. TheEmailRepositoryalready usesfunc.substr(..., 1, 100)in the SQL query, so theentity.bodyis already truncated.getattr(entity, 'field', None)with direct attribute accessentity.fieldforsender_display_nameandsender_email. SinceEmailis a strictly defined Dataclass (verified inbackend/core/entities/email.py), these fields are guaranteed to exist, makinggetattroverhead unnecessary.Verification:
backend/infrastructure/db/repositories.pycontainsfunc.substr(EmailModel.body, 1, 100).backend/core/entities/email.pydefinessender_display_nameandsender_emailas fields in theEmaildataclass.PR created automatically by Jules for task 15779769181692970060 started by @Mr-Dark-debug