private static void ClearData(EFCoreContext context)
{
context.Database.ExecuteSqlCommand(@"
TRUNCATE TABLE ProductProperties
DELETE FROM Products
");
}
// context.EnsureUpsertSproc();
// UpsertProductsBatched(context, nofProducts: 5000, nofProperties: 25);
private static void UpsertProductsBatched(EFCoreContext context, int nofProducts, int nofProperties, int batchSize = 1000)
{
Console.WriteLine("Writing products...");
var sw = Stopwatch.StartNew();
{
foreach (var batch in ProductGenerator.GenerateProducts(nofProducts, nofProperties).Batch(batchSize))
{
var productsTable = new DataTable();
productsTable.Columns.Add("Id", typeof(string));
productsTable.Columns.Add("Code", typeof(string));
productsTable.Columns.Add("Name", typeof(string));
productsTable.Columns.Add("StartDate", typeof(DateTime));
productsTable.Columns.Add("EndDate", typeof(DateTime));
productsTable.Columns.Add("IsActive", typeof(bool));
productsTable.Columns.Add("IsBuyable", typeof(bool));
productsTable.Columns.Add("MinOrderQuantity", typeof(int));
productsTable.Columns.Add("MaxOrderQuantity", typeof(int));
var propertiesTable = new DataTable();
propertiesTable.Columns.Add("ProductId", typeof(string));
propertiesTable.Columns.Add("Name", typeof(string));
propertiesTable.Columns.Add("Locale", typeof(string));
propertiesTable.Columns.Add("Value", typeof(string));
foreach (var p in batch)
{
productsTable.Rows.Add(p.Id, p.Code, p.Name, p.StartDate, p.EndDate,
p.IsActive, p.IsBuyable, p.MinOrderQuantity, p.MaxOrderQuantity);
foreach (var prop in p.Properties)
{
propertiesTable.Rows.Add(prop.ProductId, prop.Name, prop.Locale, prop.Value);
}
}
context.Database.ExecuteSqlCommand("EXEC [dbo].[UpsertProducts] @products, @properties",
new SqlParameter("@products", SqlDbType.Structured)
{
Value = productsTable,
TypeName = "dbo.ProductsUDT"
},
new SqlParameter("@properties", SqlDbType.Structured)
{
Value = propertiesTable,
TypeName = "dbo.ProductPropertiesUDT"
});
}
}
sw.Stop();
Console.WriteLine($"Written {nofProducts} products with {nofProperties} properties in: {sw.Elapsed}");
var rps = (nofProducts + nofProducts * nofProperties) / sw.Elapsed.TotalSeconds;
Console.WriteLine($"That is {rps:0.##} records/s");
}
private static void WriteAndReadProducts(EFCoreContext context, int nofProducts, int nofProperties, int batchSize = 100)
{
Console.WriteLine("Writing products...");
var sw = Stopwatch.StartNew();
{
foreach (var batch in ProductGenerator.GenerateProducts(nofProducts, nofProperties).Batch(batchSize))
{
// Read existing from database.
var ids = batch.Select(x => x.Id).ToArray();
var existingSetFromDb = context.Products
.Include(x => x.Properties)
.Where(x => ids.Contains(x.Id)).ToList();
// Update existing ones.
var existingSetInBatch = new List <Product>();
foreach (var existing in existingSetFromDb)
{
var update = batch.First(x => x.Id.Equals(existing.Id, StringComparison.OrdinalIgnoreCase));
existing.UpdateFrom(update);
existingSetInBatch.Add(update);
}
// Add new ones.
context.Products.AddRange(batch.Except(existingSetInBatch));
context.SaveChanges();
}
}
sw.Stop();
Console.WriteLine($"Written {nofProducts} products with {nofProperties} properties in: {sw.Elapsed}");
var rps = (nofProducts + nofProducts * nofProperties) / sw.Elapsed.TotalSeconds;
Console.WriteLine($"That is {rps:0.##} records/s");
Console.WriteLine("Reading products...");
context.Products.FirstOrDefault();
var counter = 0;
sw.Restart();
{
IList <Product> batch = null;
do
{
batch = context.Products.AsNoTracking().Include(x => x.Properties).OrderBy(x => x.Id).Skip(counter).Take(100).ToList();
counter += batch.Count;
} while (batch.Count == 100);
}
sw.Stop();
Console.WriteLine($"Read {counter} products with {nofProperties} properties in: {sw.Elapsed}");
}
private static void QueryProducts(EFCoreContext context)
{
var sw = Stopwatch.StartNew();
var results = context.Products
.Where(pd => pd.Properties.Any(prop => prop.Name == "prop-20" &&
prop.Value.StartsWith("Property value 20"))
)
.GroupBy(pd => pd.IsActive == null ? false : pd.IsActive)
.Select(g => new
{
Active = g.Key,
Count = g.Count()
})
.ToList();
Console.WriteLine($"Queried {results.Count} results in: {sw.Elapsed}");
}
static void Main(string[] args)
{
Console.WriteLine(typeof(Program).FullName);
var config = new ConfigurationBuilder()
.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
.Build();
using (var context = new EFCoreContext(config.GetConnectionString(nameof(EFCoreContext))))
{
// Ensure context is initialized.
ClearData(context);
context.Products.FirstOrDefault();
Console.WriteLine("Database initialized.");
WriteAndReadProducts(context, nofProducts: 500, nofProperties: 25);
}
Console.ReadLine();
}
