为什么此代码在解析 CSV 文件时会阻止我的 UI？

Question

在后台，我尝试解析包含 40,000 多个机场名称的 CSV 文件。这个想法是在应用程序首次启动时在后台解析它并使用 SwiftData 将其保存到数据库。但当解析开始时，用户界面就会冻结。哪里错了？

//--编辑--//

按照建议，我修改了代码以限制被过滤的机场数量，避免每个周期都保存数据库。

但是当我尝试在查询中使用谓词或获取描述符时，我遇到以下错误（见下文）

Instance member 'descriptor' cannot be used on type 'Airports'; did you mean to use a value of this type instead?

import SwiftUI
import SwiftData

struct Airports: View {
    var descriptor = FetchDescriptor<Airport>()
    @Query(descriptor) var aptshort: [Airport] //<----error
    
    var pr = #Predicate<Airport> { apt in
        apt.icao.contains("V")
        
    }
    
    @Query(filter: pr,//<----error
           sort: [SortDescriptor(\Airport.lastPicked,order: .reverse)],
           animation: .default) var aptshort2: [Airport]
    
    
    var body: some View {
        List{
            Text("Airport Contains : \(aptshort.count)")
            ForEach(aptshort) { apt in
                Text("icao: \(apt.icao)")
            }
            
        }
    }
}

actor AirportParser: ModelActor {
    let executor: any ModelExecutor
    let context: ModelContext

    init(modelContainer: ModelContainer) {
        context = ModelContext(modelContainer)
        executor = DefaultModelExecutor(context: context)
    }
  
    func parseDBAirport() async {
        guard let file = Bundle.main.path(forResource: "airports", ofType: "csv") else {return}
        let url = URL(filePath: file)
        
        do {
            let csvFile : CSV = try CSV<Named>(url: url)
            
            print(csvFile.rows)
            
            for raw in csvFile.rows{
                
                let icao = raw["ident"] ?? ""
                let airport = Airport(lastPicked: Date(), icao: icao)
                
                context.insert(airport)
            }
            
            print("finish save all airports")
           do{
                try context.save()
            }catch {
                print(error)
            }
        } catch let err {
            print(err.localizedDescription)
        }
    }
}