public int UpdateProductsCategory(int categoryID, ProductCategory newCategory)
{
Debug.Write(">>> Updating a products category ... ");
DBStockCTX stockDB = new DBStockCTX();
/*
* // 1st method: with a query
* // init a query
* var query = from prodCat in stockDB.productscategories
* where prodCat.id == categoryID
* select prodCat;
*
* // get the searched element
* ProductCategory category = query.FirstOrDefault<ProductCategory>();
*
* // 2nd method: without a query, use find method
* ProductCategory prodCat = stockDB.productscategories.Find(categoryID);
*
* prodCat.name = newCategory.name;
* prodCat.description = newCategory.description;
* prodCat.products = newCategory.products;
*/
// 3rd method: using attach method
stockDB.productscategories.Attach(newCategory);
stockDB.Entry(newCategory).State = EntityState.Modified;
stockDB.SaveChanges();
Debug.WriteLine("Done.");
return(0);
}
static void Main(string[] args)
{
// init a new instance of stock service
Console.WriteLine("> Staring Stock Service ...");
#region DB connection init (EF6)
Debug.WriteLine(">> Init StockDB ... ");
// create DB if does not exists
DBStockCTX stockDB = new DBStockCTX();
Console.Write(">>> Checking Stock DB existance: ");
if (!stockDB.Database.Exists())
{
Console.Write("does not exists!\n>>>> Creating a new one ... ");
stockDB.Database.Create();
Console.WriteLine("Done.");
}
else
{
Console.WriteLine("already exists.");
}
//Debug.WriteLine("Done.");
#endregion
#region Service init (WCF)
// init the service here
Debug.Write(">> Init Service ... ");
Uri baseAddr = new Uri("http://127.0.0.1:9999/CRUDServer");
// create the service host
ServiceHost hoster = new ServiceHost(typeof(StockService), baseAddr);
// add service EP
hoster.AddServiceEndpoint(typeof(IStockService), new WSHttpBinding(), "Stock");
// enable metadata exchange
ServiceMetadataBehavior smb = new ServiceMetadataBehavior();
smb.HttpGetEnabled = true;
hoster.Description.Behaviors.Add(smb);
// add EP to host
hoster.AddServiceEndpoint(ServiceMetadataBehavior.MexContractName, MetadataExchangeBindings.CreateMexHttpBinding(), "mex");
// open the host
hoster.Open();
Debug.WriteLine("Done.");
#endregion
Console.WriteLine("> Service is UP ...");
Console.WriteLine("!!! Press ENTER to quit !!!");
Console.ReadLine();
}
public int DeleteProduct(Product product)
{
// PS: there is some exceptions to catch ie: null, ...
Debug.Write(">>> Deleting a product ... ");
try
{
DBStockCTX stockDB = new DBStockCTX();
stockDB.products.Remove(product);
stockDB.SaveChanges();
}
catch (Exception ex)
{
Debug.WriteLine("Error:");
Console.WriteLine(ex.Message);
return(1);
}
Debug.WriteLine("Done.");
return(0);
}
//private DBStockCTX stockDB = null; // stock database context handler
//private ServiceHost hoster = null; // service handler
#region product OPS
public int AddProduct(Product product)
{
// PS: there is some exceptions to catch ie: duplicates, null ...
Debug.Write(">>> Adding a new product ... ");
try
{
DBStockCTX stockDB = new DBStockCTX();
stockDB.products.Add(product);
stockDB.SaveChanges();
}
catch (Exception ex)
{
Debug.WriteLine("Error:");
Console.WriteLine(ex.Message);
return(1);
}
Debug.WriteLine("Done.");
return(0);
}
public List <ProductCategory> GetAllProductsCategories()
{
Debug.Write(">>> Requesting all product ...");
List <ProductCategory> productsCat = null;
try
{
DBStockCTX stockDB = new DBStockCTX();
productsCat = stockDB.productscategories.ToList <ProductCategory>();
}
catch (Exception ex)
{
Debug.WriteLine("Error:");
Console.WriteLine(ex.Message);
return(productsCat);
}
Debug.WriteLine("Done.");
return(productsCat);
}
public int DeleteProductsCategory(ProductCategory category)
{
// PS: there is some exceptions to catch ie: duplicates, null ...
Debug.Write(">>> Deleting a products category ... ");
try
{
DBStockCTX stockDB = new DBStockCTX();
stockDB.productscategories.Remove(category);
stockDB.SaveChanges();
}
catch (Exception ex)
{
Debug.WriteLine("Error:");
Console.WriteLine(ex.Message);
return(1);
}
Debug.WriteLine("Done.");
return(0);
}
public int UpdateProduct(int productID, Product newProduct)
{
// PS: there is some exceptions to catch ie: null, ...
Debug.Write(">>> Updating a new product ... ");
try
{
DBStockCTX stockDB = new DBStockCTX();
/*
* // 1st method: with a query
* // init a query
* var query = from prod in stockDB.products
* where prod.id == productID
* select prod;
*
* // get the searched element
* Product product = query.FirstOrDefault<Product>();
*
* // 2nd method: without a query, use find method
* Product prod = stockDB.products.Find(productID);
* prod.name = newProduct.name;
* prod.description = newProduct.description;
* prod.price = newProduct.price;
* prod.category = newProduct.category;
*/
// 3rd method: using attach method
stockDB.products.Attach(newProduct);
stockDB.Entry(newProduct).State = EntityState.Modified;
stockDB.SaveChanges();
}
catch (Exception ex)
{
Debug.WriteLine("Error:");
Console.WriteLine(ex.Message);
return(1);
}
Debug.WriteLine("Done.");
return(0);
}
