public void Update(ProductState productState, ProductStateData productStateData)
{
if (productState != null)
{
if (productStateData != null)
{
if (productStateData.IsAmountChanged == true)
{
productState.Amount = productStateData.Amount;
context.ReportData.LastChangeTime = DateTime.Now;
}
if (productStateData.IsPriceNettoChanged == true)
{
productState.PriceNetto = productStateData.PriceNetto;
context.ReportData.LastChangeTime = DateTime.Now;
}
if (productStateData.IsTaxRateChanged == true)
{
productState.TaxRate = productStateData.TaxRate;
context.ReportData.LastChangeTime = DateTime.Now;
}
}
else
{
throw new ArgumentNullException("ProductStateData can not be null");
}
}
else
{
throw new ArgumentNullException("ProductState can not be null");
}
}
public void Add(ProductState productState)
{
if (productState != null)
{
if (productState.Product != null)
{
if (context.ProductStates.FirstOrDefault(p => p.Product.Id == productState.Product.Id) == null) // if no ProductState describing the same product
{
context.ProductStates.Add(productState);
context.ReportData.LastChangeTime = DateTime.Now;
}
else
{
throw new DuplicateException("Cannot add productState describing the same product.");
}
}
else
{
throw new ArgumentNullException("Can not add ProductState without Product");
}
}
else
{
throw new ArgumentNullException("Product can not be null");
}
}
public void Delete(ProductState productState)
{
if (productState.Product != null)
{
if (context.ProductStates.Contains(productState))
{
context.ProductStates.Remove(productState);
context.ReportData.LastChangeTime = DateTime.Now;
}
else
{
throw new NotFoundException("Product State not found");
}
}
else
{
throw new DeleteReferencesException("Can not delete ProductData because of the reference to some Product");
}
}