Unbounded Fetch (ARCH9061)

Key swift.orm.unbounded-query-no-limit · Severity warning · Category orm

Flags NSFetchRequest executed without fetchLimit or fetchBatchSize - the whole table loads into memory.

Incorrect

let request = Order.fetchRequest()
let all = try context.fetch(request)

Correct

let request = Order.fetchRequest()
request.fetchBatchSize = 100
let page = try context.fetch(request)

Fix

Set fetchLimit / fetchBatchSize or use a fetched results controller.