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Baryshev Dmitry 2024-05-10 00:20:34 +04:00
parent b0e6c97466
commit 89a9f30dda
1 changed files with 18 additions and 15 deletions
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33
ProjectDumpTruck/ProjectDumpTruck/CollectionGenericObject/StorageCollection.cs
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@ -1,4 +1,5 @@
using ProjectDumpTruck.Drawnings; using ProjectDumpTruck.Drawnings;
using ProjectDumpTruck.Exceptions;
using System; using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.Linq; using System.Linq;
@ -102,7 +103,7 @@ public class StorageCollection<T>
{ {
if (File.Exists(filename)) File.Delete(filename); if (File.Exists(filename)) File.Delete(filename);
if (_storages.Count == 0) return false; if (_storages.Count == 0) throw new NullReferenceException("В хранилище отсутствуют коллекции для сохранения");
using (StreamWriter sw = new StreamWriter(filename)) using (StreamWriter sw = new StreamWriter(filename))
{ {
@ -143,19 +144,16 @@ public class StorageCollection<T>
/// <returns>true - загрузка прошла успешно, false - ошибка при загрузке данных</returns> /// <returns>true - загрузка прошла успешно, false - ошибка при загрузке данных</returns>
public bool LoadData(string filename) public bool LoadData(string filename)
{ {
if (!File.Exists(filename)) return false; if (!File.Exists(filename)) throw new FileNotFoundException("Файл не существует"); ;
using (StreamReader sr = new(filename)) using (StreamReader sr = new(filename))
{ {
string line = sr.ReadLine(); string line = sr.ReadLine();
if (line == null || line.Length == 0) return false; if (line == null || line.Length == 0) throw new FileFormatException("В файле нет данных"); ;
if (!line.Equals(_collectionKey)) throw new FileFormatException("В файле неверные данные");
if (!line.Equals(_collectionKey))
{
//если нет такой записи, то это не те данные
return false;
}
_storages.Clear(); _storages.Clear();
while ((line = sr.ReadLine()) != null) while ((line = sr.ReadLine()) != null)
@ -168,20 +166,25 @@ public class StorageCollection<T>
CollectionType collectionType = (CollectionType)Enum.Parse(typeof(CollectionType), record[1]); CollectionType collectionType = (CollectionType)Enum.Parse(typeof(CollectionType), record[1]);
ICollectionGenericObject<T>? collection = StorageCollection<T>.CreateCollection(collectionType); ICollectionGenericObject<T>? collection = StorageCollection<T>.CreateCollection(collectionType);
if (collection == null)
{ if (collection == null) throw new InvalidOperationException("Не удалось создать коллекцию");
return false;
}
collection.MaxCount = Convert.ToInt32(record[2]); collection.MaxCount = Convert.ToInt32(record[2]);
string[] set = record[3].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries); string[] set = record[3].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries);
foreach (string elem in set) foreach (string elem in set)
{ {
if (elem?.CreateDrawningTruck() is T warship) if (elem?.CreateDrawningTruck() is T truck)
{ {
if (collection.Insert(warship) == -1) try
{ {
return false; if (collection.Insert(truck) == -1)
{
throw new InvalidOperationException("Объект не удалось добавить в коллекцию: " + record[3]);
}
}
catch (CollectionOverflowException ex)
{
throw new OverflowException("Коллекция переполнена", ex);
} }
} }
} }