/// <summary>
/// Default constructor.
/// </summary>
public ProductsService()
{
this.dataAccessObject = new ProductDataAccessObject();
}
/// <summary>
/// Constructor with data access layer dependency injection.
/// </summary>
/// <param name="dataAccessObject"></param>
public ProductsService(IProductDataAccessObject dataAccessObject)
{
this.dataAccessObject = dataAccessObject;
}