Лабораторная работа №6
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@ -28,6 +28,12 @@ public class StorageCollection<T>
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_storages = new Dictionary<string, ICollectionGenericObjects<T>>();
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}
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private readonly string _collectionKey = "CollectionsStorage";
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private readonly string _separatorForKeyValue = "|";
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private readonly string _separatorItems = ";";
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/// <summary>
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/// Добавление коллекции в хранилище
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/// </summary>
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@ -35,10 +41,10 @@ public class StorageCollection<T>
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/// <param name="collectionType">Тип коллекции</param>
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public void AddCollection(string name, CollectionType collectionType)
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{
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// TODO проверка, что name не пустой и нет в словаре записи с таким ключом
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if (_storages.ContainsKey(name))
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if (string.IsNullOrEmpty(name) || _storages.ContainsKey(name))
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{
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return;
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}
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// TODO Прописать логику для добавления
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if (collectionType == CollectionType.List)
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{
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@ -80,69 +86,55 @@ public class StorageCollection<T>
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}
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}
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private readonly string _collectionKey = "CollectionsStorage";
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private readonly string _separatorForKeyValue = "|";
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private readonly string _separatorItems = ";";
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/// <summary>
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/// Сохранение информации по кораблям в хранилище в файл
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/// </summary>
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/// <param name="filname"></param>
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/// <returns></returns>
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public bool SaveData(string filname)
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public bool SaveData(string filename)
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{
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if (_storages.Count == 0)
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{
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return false;
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}
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if (File.Exists(filname))
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if (File.Exists(filename))
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{
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File.Delete(filname);
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File.Delete(filename);
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}
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if (File.Exists(filname))
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using (StreamWriter writer = new StreamWriter(filename))
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{
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File.Delete(filname);
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}
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StringBuilder sb = new();
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sb.Append(_collectionKey);
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foreach (KeyValuePair<string, ICollectionGenericObjects<T>> value in _storages)
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{
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sb.Append(Environment.NewLine);
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// не сохраняем пустые коллекции
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if (value.Value.Count == 0)
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writer.Write(_collectionKey);
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foreach (KeyValuePair<string, ICollectionGenericObjects<T>> value in _storages)
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{
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continue;
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}
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sb.Append(value.Key);
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sb.Append(_separatorForKeyValue);
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sb.Append(value.Value.GetCollectionType);
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sb.Append(_separatorForKeyValue);
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sb.Append(value.Value.MaxCount);
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sb.Append(_separatorForKeyValue);
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foreach (T? item in value.Value.GetItems())
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{
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string data = item?.GetDataForSave() ?? string.Empty;
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if (string.IsNullOrEmpty(data))
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writer.Write(Environment.NewLine);
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// не сохраняем пустые коллекции
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if (value.Value.Count == 0)
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{
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continue;
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}
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sb.Append(data);
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sb.Append(_separatorItems);
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writer.Write(value.Key);
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writer.Write(_separatorForKeyValue);
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writer.Write(value.Value.GetCollectionType);
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writer.Write(_separatorForKeyValue);
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writer.Write(value.Value.MaxCount);
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writer.Write(_separatorForKeyValue);
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foreach (T? item in value.Value.GetItems())
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{
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string data = item?.GetDataForSave() ?? string.Empty;
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if (string.IsNullOrEmpty(data))
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{
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continue;
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}
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writer.Write(data);
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writer.Write(_separatorItems);
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}
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}
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}
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using FileStream fs = new(filname, FileMode.Create);
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byte[] info = new UTF8Encoding(true).GetBytes(sb.ToString());
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fs.Write(info, 0, info.Length);
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return true;
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}
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@ -158,62 +150,64 @@ public class StorageCollection<T>
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return false;
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}
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string bufferTextFromFile = "";
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using (FileStream fs = new(filename, FileMode.Open))
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using (StreamReader reader = File.OpenText(filename))
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{
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byte[] b = new byte[fs.Length];
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UTF8Encoding temp = new(true);
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while (fs.Read(b, 0, b.Length) > 0)
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{
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bufferTextFromFile += temp.GetString(b);
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}
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}
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string str = reader.ReadLine();
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string[] strs = bufferTextFromFile.Split(new char[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
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if (strs == null || strs.Length == 0)
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{
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return false;
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}
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if (!strs[0].Equals(_collectionKey))
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{
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//если нет такой записи, то это не те файлы
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return false;
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}
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_storages.Clear();
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foreach (string data in strs)
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{
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string[] record = data.Split(_separatorForKeyValue, StringSplitOptions.RemoveEmptyEntries);
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if (record.Length != 4)
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{
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continue;
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}
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CollectionType collectionType = (CollectionType)Enum.Parse(typeof(CollectionType), record[1]);
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ICollectionGenericObjects<T> collection = StorageCollection<T>.CreateCollection(collectionType);
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if (collection == null)
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if (str == null || str.Length == 0)
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{
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return false;
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}
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collection.MaxCount = Convert.ToInt32(record[2]);
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string[] set = record[3].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries);
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foreach (string elem in set)
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if (!str.StartsWith(_collectionKey))
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{
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if (elem?.CreateDrawingWarship() is T warship)
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{
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if (collection.Insert(warship) == -1)
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{
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return false;
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}
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}
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//если нет такой записи, то это не те данные
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return false;
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}
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_storages.Add(record[0], collection);
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_storages.Clear();
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string strs = "";
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while ((strs = reader.ReadLine()) != null)
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{
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string[] record = strs.Split(_separatorForKeyValue, StringSplitOptions.RemoveEmptyEntries);
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if (record.Length != 4)
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{
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continue;
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}
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CollectionType collectionType = (CollectionType)Enum.Parse(typeof(CollectionType), record[1]);
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ICollectionGenericObjects<T>? collection = StorageCollection<T>.CreateCollection(collectionType);
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if (collection == null)
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{
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return false;
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}
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collection.MaxCount = Convert.ToInt32(record[2]);
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string[] set = record[3].Split(_separatorItems, StringSplitOptions.RemoveEmptyEntries);
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foreach (string elem in set)
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{
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if (elem?.CreateDrawingWarship() is T bulldozer)
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{
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if (collection.Insert(bulldozer) == -1)
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{
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return false;
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}
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}
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}
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_storages.Add(record[0], collection);
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}
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}
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return true;
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}
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/// <summary>
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/// Создание коллекции по типу
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/// </summary>
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/// <param name="collectionType"></param>
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/// <returns></returns>
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private static ICollectionGenericObjects<T>? CreateCollection(CollectionType collectionType)
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{
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return collectionType switch
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