added unique fields

examples/basic/data/users.jsonl

@@ -0,0 +1,2 @@
+{"age":31,"created":"2026-03-04T09:07:22+06:00","email":"john@example.com","id":1,"name":"John Doe"}                                                                                                                                                                                                                                                                                                                                                                                                                           
+{"age":35,"created":"2026-03-04T09:07:22+06:00","email":"bob@example.com","id":3,"name":"Bob Johnson"}                                                                                                                                                                                                                                                                                                                                                                                                                         

examples/basic/main.go

@@ -21,7 +21,7 @@ func main() {
 	initOptions := &linedb.LineDbInitOptions{
 		CacheSize: 1000,
 		CacheTTL:  5 * time.Minute,
-		DBFolder:  "./data",
+		DBFolder:  "./examples/basic/data",
 		Collections: []linedb.JSONLFileOptions{
 			{
 				CollectionName: "users",
@@ -41,21 +41,31 @@ func main() {
 	}
 	defer db.Close()
 
+	//delete all entries from users collection
+	if _, err := db.Delete(map[string]any{}, "users", linedb.LineDbAdapterOptions{}); err != nil {
+		log.Fatalf("Failed to delete users: %v", err)
+	}
+
+	fmt.Println("All entries deleted from users collection")
+
 	// Создаем тестовых пользователей
 	users := []any{
 		map[string]any{
+			"id":      1,
 			"name":    "John Doe",
 			"email":   "john@example.com",
 			"age":     30,
 			"created": time.Now().Format(time.RFC3339),
 		},
 		map[string]any{
+			"id":      2,
 			"name":    "Jane Smith",
 			"email":   "jane@example.com",
 			"age":     25,
 			"created": time.Now().Format(time.RFC3339),
 		},
 		map[string]any{
+			"id":      3,
 			"name":    "Bob Johnson",
 			"email":   "bob@example.com",
 			"age":     35,
@@ -94,17 +104,24 @@ func main() {
 	}
 
 	// Обновляем пользователя
-	updateData := map[string]any{"age": 31}
+	updateData := map[string]any{"age": 31, "email": "jane@example.com"}
 	updateFilter := map[string]any{"email": "john@example.com"}
 	updatedUsers, err := db.Update(updateData, "users", updateFilter, linedb.LineDbAdapterOptions{})
 	if err != nil {
-		log.Fatalf("Failed to update user: %v", err)
+		log.Printf("Failed to update user: %v", err)
+	}
+
+	updateData = map[string]any{"age": 31, "email": "john@example.com"}
+	updateFilter = map[string]any{"email": "john@example.com"}
+	updatedUsers, err = db.Update(updateData, "users", updateFilter, linedb.LineDbAdapterOptions{})
+	if err != nil {
+		log.Printf("Failed again to update user: %v", err)
 	}
 
 	fmt.Printf("Updated %d users\n", len(updatedUsers))
 
 	// Удаляем пользователя
-	deleteFilter := map[string]any{"email": "bob@example.com"}
+	deleteFilter := map[string]any{"email": "jane@example.com"}
 	deletedUsers, err := db.Delete(deleteFilter, "users", linedb.LineDbAdapterOptions{})
 	if err != nil {
 		log.Fatalf("Failed to delete user: %v", err)