Victoria_Presnyakova/Pibd-22_Presnyakova.V.V_JewelryStore
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VictoriaPresnyakova 2023-02-20 15:08:30 +04:00
parent 0c874c7eeb
commit 10092dcda3
1 changed files with 9 additions and 15 deletions
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24
JewelryStoreFileImplement/DataFileSingleton.cs
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@ -13,10 +13,10 @@ namespace JewelryStoreFileImplement
private static DataFileSingleton? instance; private static DataFileSingleton? instance;
private readonly string ComponentFileName = "Component.xml"; private readonly string ComponentFileName = "Component.xml";
private readonly string OrderFileName = "Order.xml"; private readonly string OrderFileName = "Order.xml";
private readonly string ProductFileName = "Product.xml"; private readonly string JewelFileName = "Jewel.xml";
public List<Component> Components { get; private set; } public List<Component> Components { get; private set; }
public List<Order> Orders { get; private set; } public List<Order> Orders { get; private set; }
public List<Jewel> Products { get; private set; } public List<Jewel> Jewels { get; private set; }
public static DataFileSingleton GetInstance() public static DataFileSingleton GetInstance()
{ {
if (instance == null) if (instance == null)
@ -25,20 +25,16 @@ namespace JewelryStoreFileImplement
} }
return instance; return instance;
} }
public void SaveComponents() => SaveData(Components, ComponentFileName, public void SaveComponents() => SaveData(Components, ComponentFileName,"Components", x => x.GetXElement);
"Components", x => x.GetXElement); public void SaveJewels() => SaveData(Jewels, JewelFileName, "Jewels", x => x.GetXElement);
public void SaveProducts() => SaveData(Products, ProductFileName,
"Products", x => x.GetXElement);
public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement); public void SaveOrders() => SaveData(Orders, OrderFileName, "Orders", x => x.GetXElement);
private DataFileSingleton() private DataFileSingleton()
{ {
Components = LoadData(ComponentFileName, "Component", x => Components = LoadData(ComponentFileName, "Component", x =>Component.Create(x)!)!;
Component.Create(x)!)!; Jewels = LoadData(JewelFileName, "Jewel", x => Jewel.Create(x)!)!;
Products = LoadData(ProductFileName, "Product", x => Jewel.Create(x)!)!;
Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!; Orders = LoadData(OrderFileName, "Order", x => Order.Create(x)!)!;
} }
private static List<T>? LoadData<T>(string filename, string xmlNodeName, private static List<T>? LoadData<T>(string filename, string xmlNodeName, Func<XElement, T> selectFunction)
Func<XElement, T> selectFunction)
{ {
if (File.Exists(filename)) if (File.Exists(filename))
{ {
@ -47,13 +43,11 @@ namespace JewelryStoreFileImplement
} }
return new List<T>(); return new List<T>();
} }
private static void SaveData<T>(List<T> data, string filename, string private static void SaveData<T>(List<T> data, string filename, string xmlNodeName, Func<T, XElement> selectFunction)
xmlNodeName, Func<T, XElement> selectFunction)
{ {
if (data != null) if (data != null)
{ {
new XDocument(new XElement(xmlNodeName, new XDocument(new XElement(xmlNodeName,data.Select(selectFunction).ToArray())).Save(filename);
data.Select(selectFunction).ToArray())).Save(filename);
} }
} }
} }