Ruminations of idle rants and ramblings of a code monkey

Visual Studio Project and Item Templates for StreamInsight

I’ve just published – and created an initial release for – a set of Visual Studio project and item templates for StreamInsight. The release dropped yesterday is a beta primarily for feedback on the templates, particularly the naming conventions, comments and sample boilerplate code. The items are placed in a “StreamInsight” grouping in the Add New dialogues so they’re very easy to find. There are four project templates:

  • A console application project template that creates a basic app based on the Simple StreamInsight Application that I posted about 2 months ago.
  • A StreamInsight library project template that creates a blank DLL project with the StreamInsight references added. Unlike the built-in DLL project template, this template does not include “Class1.cs” … which has always gotten on my nerves.
  • Item templates for both input and output adapters, typed and untyped. These are multi-file item templates and add the factory, a configuration class and adapters for edge, point and interval events. The typed adapters add a basic/simple type class as well. Each adapter is placed in its own folder and has its own namespace. Because of how the replacement parameters work with the templates, the file names have the format [BaseItemName][Direction].[ItemType]. The base item name will be a short name for the source/destination for the adapter. For example, a point adapter for, say, WCF input adapter for edge events would be WcfInput.Edge. When naming this in the Add New Item dialogue, you would use “Wcf” only.

Project Templates:

Project Templates

Item Templates:

Item Templates

New Item in Solution Explorer:


In the near future, I’m planning on adding item templates for the various StreamInsight specific extension points such as UDA’s and, when version 1.2 is released, UDSO’s.

In the longer term, I’d like to make this a wizard rather than simple item templates. A wizard may allow me to get away from the “.” in the file names and it will allow users to select existing classes for the typed input adapters rather than creating a “phony” one, thereby creating a better user experience. Once I do that, the VSIX will need to be installed via MSI, which would also allow for the addition of Visual Studio snippets for common query patterns and other code chunks. Ambitious goals, perhaps, but those are the only ones worth having, right?

Creating the templates themselves was a royal pain in the a$$. Not so much because of the actual process but because the documentation for creating templates sucks so badly. Some of the documented replacement parameters documented are simply wrong – as in, they don’t get replaced!. Others aren’t documented at all, which makes discovery of these things far more difficult. Considering the number of templates that the Microsoft folks create (and especially the Visual Studio group), one would hope that the documentation would be better that the suckage that exists on MSDN. I wound up digging around in the Visual Studio templates installed on my machine than to figure out some of this stuff.

Of course, because I am a big fan of .NET Open Source software, it is available on CodePlex … and you, dear reader, are welcome to sign up if you’d like to help!