/// <summary>
/// Generate a batch class definition to be used as a Beat pipe.
/// Compile the definition, dynamically load the assembly containing it, and return the Type representing the
/// Beat pipe class.
/// </summary>
/// <typeparam name="TKey">The key type for both sides.</typeparam>
/// <typeparam name="TPayload">The payload type.</typeparam>
/// <returns>
/// A type that is defined to be a subtype of UnaryPipe<<typeparamref name="TKey"/>,<typeparamref name="TPayload"/>, <typeparamref name="TPayload"/>>.
/// </returns>
internal static Tuple <Type, string> Generate <TKey, TPayload>(BeatStreamable <TKey, TPayload> stream)
{
Contract.Requires(stream != null);
Contract.Ensures(Contract.Result <Tuple <Type, string> >() == null || typeof(UnaryPipe <TKey, TPayload, TPayload>).GetTypeInfo().IsAssignableFrom(Contract.Result <Tuple <Type, string> >().Item1));
#if CODEGEN_TIMING
Stopwatch sw = new Stopwatch();
sw.Start();
#endif
var template = new BeatTemplate(
string.Format("GeneratedBeat_{0}", BeatSequenceNumber++),
typeof(TKey), typeof(TPayload));
template.ActiveEventType = typeof(TPayload).GetTypeInfo().IsValueType ? template.TPayload : "Active_Event";
#region Key Comparer
var keyComparer = stream.Properties.KeyEqualityComparer.GetEqualsExpr();
template.keyComparer =
(left, right) =>
keyComparer.Inline(left, right);
#endregion
#region Payload Comparer
var payloadComparer = stream.Properties.PayloadEqualityComparer.GetEqualsExpr();
var newLambda = Extensions.TransformFunction <TKey, TPayload>(payloadComparer, "index");
template.payloadComparer = (left, right) => newLambda.Inline(left, right);
#endregion
return(template.Generate <TKey, TPayload>(typeof(IStreamable <,>)));
}
public BeatPipe(BeatStreamable <TKey, TPayload> stream, IStreamObserver <TKey, TPayload> observer)
: base(stream, observer)
{
this.offset = stream.Offset;
this.period = stream.Period;
this.errorMessages = stream.ErrorMessages;
this.keyComparerExpr = stream.Properties.KeyEqualityComparer.GetEqualsExpr();
this.keyComparer = this.keyComparerExpr.Compile();
this.payloadComparerExpr = stream.Properties.PayloadEqualityComparer.GetEqualsExpr();
this.payloadComparer = this.payloadComparerExpr.Compile();
this.pool = MemoryManager.GetMemoryPool <TKey, TPayload>(stream.Properties.IsColumnar);
this.pool.Get(out this.output);
this.output.Allocate();
}
