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Tuesday, August 25, 2009 1:01 AM

From the ReactiveFramework to StreamInsight and Back

In my last post I showed how to send StreamInsight output streams to a UI via the ReactiveFramework . Here’s we’ll do the reverse, by sending an RX stream into a CEP stream. Instead of a partial example, I’ll use an end to end example showing simulated...
Posted by Scott Weinstein | 4 comment(s)
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Sunday, August 23, 2009 5:01 PM

Routing StreamInsight output streams to a UI

One compelling feature of StreamInsight is it’s in-process hosting model. In addition to reducing the complexity of server side installs, it’s now possible to have a  CEP engine in the client UI. The simplest way of getting CEP streams onto the UI...
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Wednesday, August 12, 2009 12:15 AM

Exploring the Reactive Framework part II

Talk around the water cooler is that it might be possible to use the Reactive Framework for some lightweight CEP. I’ll correct some of the (big) mistakes from my last post and build up a “jumping” window extension method for IObservable s.   In my...
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Wednesday, July 29, 2009 1:07 AM

Exploring the Reactive Framework (RX)

A few days ago , intentionally or not, a version of the Reactive Framework was released into the wild . Let’s see how we can use the RX for computations on a stream of data. As an example we’ll take a stream of ints and produce the averages in groups...
Posted by Scott Weinstein | 4 comment(s)
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Thursday, July 23, 2009 5:49 PM

Preview of the Reactive Framework available via Silverlight Toolkit

Via Jafar Husain - it appears that there’s a early release of the Live Labs Reactive Framework (& with Brian Beckman and Erik Meijer ) in the latest Silverlight Toolkit   In addition to some of the standard LINQ operators ( Select, Where, Aggregate...
Posted by Scott Weinstein | 4 comment(s)
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Friday, May 08, 2009 2:44 PM

When Add(ing)-Type, choose your method signatures wisely

  Powershell V2 has some great new features, in particular Add-Type and Remoting features are likely to be quite popular and work together without much issue. That said, there are edge cases which illustrate how the types returned from remoting calls...
Posted by Scott Weinstein | 2 comment(s)
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Thursday, April 16, 2009 11:55 PM

Stream transforms in Coral8 via .Net

In the first post on integrating PowerShell and Coral8 I showed how to create a message sink. In C#ish pseudocode we did the following: OutputStream<T> => Action<T> where the Action<T> was a PowerShell block to send a message via...
Posted by Scott Weinstein | 2 comment(s)
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Tuesday, March 10, 2009 8:00 PM

Adding var args support to office integration functions with dynamic lambda expressions

Anyone who’s ever done office integration has come across a method definition like so: object Run(object Macro, object Arg1, object Arg2, …, object Arg30); if you're working in VB it’s not such an issue, and rumor has it that it’s that C# 4 will also...
Posted by Scott Weinstein | 1 comment(s)
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Tuesday, March 03, 2009 11:09 PM

Linq2Kdb+ Provider - source code update

A few months ago, over the winter holiday, I put together a Linq provider for the Kdb+ database . The folks at KX systems have graciously provided a place to host the code, which you can find at https://code.kx.com/svn/contrib/sweinstein/linq2kdbplus...
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Sunday, January 04, 2009 5:13 AM

A Linq2Kdb+ Query provider

Over the winter break I wanted to learn more about a few technologies:   T4 - the built into Visual Studio code generation tool The Kdb+ columnar database Expression trees   The result ended up in a Linq to Kdb+ query provider. The following...
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