Michael Chus
a44133aff2
identifier-normalization, no-hardcoded-vendors, vendor-installer-verification, and build-version-display follow the go-database split: rules in contract.md, snippets in README.md. Routed contract reads get cheaper; examples stay available on demand. Lint now also rejects stale kit/patterns references. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
1.2 KiB
1.2 KiB
Identifier Normalization Pattern Notes
This file keeps examples. The normative rules live in contract.md.
Go — сравнение
import "strings"
func SameIdentifier(a, b string) bool {
return strings.EqualFold(a, b)
}
Go — дедупликация
func deduplicateBySerial(items []Device) []Device {
seen := make(map[string]struct{})
result := items[:0]
for _, item := range items {
key := strings.ToLower(item.SerialNumber)
if _, exists := seen[key]; !exists {
seen[key] = struct{}{}
result = append(result, item)
}
}
return result
}
SQL — поиск и уникальность
Поиск:
SELECT * FROM devices WHERE LOWER(serial_number) = LOWER(?);
Уникальный индекс (MySQL / MariaDB):
-- Collation ci обеспечивает case-insensitive уникальность
ALTER TABLE devices MODIFY serial_number VARCHAR(255)
CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;
ALTER TABLE devices ADD UNIQUE INDEX uniq_serial (serial_number);
SQLite:
CREATE UNIQUE INDEX uniq_serial ON devices (LOWER(serial_number));