private void BulkLoadEntities(EntityPump pump, string connectionString, dynamic entities)
{
Console.WriteLine($"[{DateTime.Now:o}] Preparing rows for commit ...");
Stopwatch sw = Stopwatch.StartNew();
using (var transactionScope = new TransactionScope(
TransactionScopeOption.Required,
new TransactionOptions {
IsolationLevel = IsolationLevel.ReadCommitted
}))
{
using (var sqlBulkCopy = new SqlBulkCopy(connectionString))
{
sqlBulkCopy.DestinationTableName = pump.TableName;
sqlBulkCopy.BatchSize = 10000;
sqlBulkCopy.WriteToServer(EntityDataReaderExtensions.AsDataReader(entities));
transactionScope.Complete();
}
}
sw.Stop();
Console.WriteLine($"[{DateTime.Now:o}] -> committed {entities.Count:N0} rows in {sw.Elapsed}.");
}
public EntityPump BuildAssembly(
AssemblyName assemblyName)
{
string code = this.context.TransformText();
using (var codeProvider = new CSharpCodeProvider(
new Dictionary <string, string> {
{ "CompilerVersion", "v4.0" }
}))
{
var path = Path.GetDirectoryName(
Assembly.GetExecutingAssembly().Location);
var assemblies = new List <string>
{
"netstandard.dll",
"System.dll",
"System.ComponentModel.DataAnnotations.dll",
"System.Core.dll",
"System.Data.dll",
"System.Data.Entity.dll",
"System.Runtime.Serialization.dll",
Assembly.GetExecutingAssembly().Location,
Path.Combine(path, "Microsoft.EntityFrameworkCore.dll"),
Path.Combine(path, "Microsoft.EntityFrameworkCore.Relational.dll"), // DbContext.Database.Migrate()
//Path.Combine(path, "Microsoft.EntityFrameworkCore.Abstractions.dll"),
//Path.Combine(path, "Microsoft.Extensions.Caching.Abstractions.dll"),
//Path.Combine(path, "Microsoft.Extensions.Caching.Memory.dll"),
//Path.Combine(path, "Microsoft.Extensions.Configuration.Abstractions.xml"),
//Path.Combine(path, "Microsoft.Extensions.Configuration.Binder.xml"),
};
var options = new CompilerParameters(
assemblies.ToArray(),
assemblyName.CodeBase,
true)
{
//CompilerOptions = string.Format(@"/optimize /lib:""{0}""", path),
//CompilerOptions = string.Format(@"/target:library"),
GenerateExecutable = false,
GenerateInMemory = true,
OutputAssembly = "Spike.CodeGen.dll",
};
CompilerResults results = codeProvider.CompileAssemblyFromSource(options, code);
if (results.Errors.Count > 0)
{
string message = $"Cannot compile typed context: {results.Errors[0].ErrorText} (line {results.Errors[0].Line})";
throw new Exception(message);
}
}
var assembly = Assembly.Load(assemblyName);
var entityType = assembly.DefinedTypes.First(x => x.Name == this.context.RowName);
var contextType = assembly.DefinedTypes.First(x => x.Name == "Context");
var pump = new EntityPump()
{
TableName = this.context.TableName,
EntityType = entityType,
ContextType = contextType,
};
return(pump);
}
