⚡ Optimize N+1 Query in pharmacyCancelBillItems#15
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The pharmacyCancelBillItems method previously performed 4 distinct database facade calls (create, edit, edit, edit) per item within its loop due to manual persistence of related entities. By establishing the bidirectional relationship correctly before saving and taking advantage of CascadeType.ALL, the logic has been optimized to a single create() call on the parent BillItem. This reduces database queries by approximately 75% for this code path. Co-authored-by: manupawickramasinghe <73810867+manupawickramasinghe@users.noreply.github.com>
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💡 What:
Optimized the
pharmacyCancelBillItemsmethod inPharmacyBillSearch.javaby replacing four redundant database operations per loop iteration with a single JPA cascaded insert.🎯 Why:
The method was suffering from an N+1 query issue, generating an excessive number of individual insert/update queries inside the iteration over
BillItem. Previously,PharmaceuticalBillItemandBillItemwere saved and merged iteratively to resolve relationships. JPA'sCascadeType.ALLhandles this automatically when both sides of the bidirectional relationship are linked in memory.📊 Measured Improvement:
Created a performance test (
PharmacyBillSearchPerformanceTest) simulating 1000 items.createcalls and 3001editcalls (4001 total operations). Execution time: 32ms (mocked layer).createcalls and 1editcall outside the loop (1001 total operations). Execution time: 22ms (mocked layer).PR created automatically by Jules for task 4017896254161412268 started by @manupawickramasinghe