:O
Still lurking……(read more)
:O
Still lurking……(read more)
WCF Messaging Fundamentals
My latest Service Station column recently hit the Web on the MSDN Magazine site — it’s called WCF Messaging Fundamentals— it covers the ins-and-outs of lower-level WCF message processing.
It starts by explaining the .NET 3.0 updates to System.Xml that allow for multiple byte-level representations of an XML Infoset (text, binary, MTOM) and then explains how WCF builds on that flexible foundation. Then it dives into the Message class, discusses message versions, and various ways to read/write messages. It also covers more advanced topics like message state/lifetime, message headers and properties. Finally, the article describes how messages are ultimately mapped to methods and how you can control all of these message processing details through endpoints and bindings. I hope you find the information useful.
Saving your seat in our next class
We’re trying to make it easier for individual developers to reserve a seat in a specific course offering before they’ve completed the bureaucracy of obtaining payment from above — something that manycustomers have complainedto us about in the past. Often courses fill up to fast pushing them to the waiting list.
So now, when you see a specific course offering that you’re interested in, simply clickSave a Seatand fill out the registration form as usual, only this time you won’t be asked for payment. Then, closer to the course date, a member of oursales team will contact you to confirm attendance/payment. If you check out any of our course pages with upcoming offerings, like this one, you’ll see what I’m talking about.
And if you’d like to receive automatic notification of new courses as soon as they’re scheduled (so you can be first to save a seat), you should subscribe to our course schedule blog.
Framentation in the BTAHL7 Explorer
There is occasionally a time when you get messages that are ‘batched’ together meaning the messages come in like this
MSH
…
MSH
…
MSH
….
Or they can come in with the file header and trailer and one or more batch header and trailers like this
FHS (file header segment)
BHS (batch header segment)
MSH
…
MSH
…
BTS (batch trailer segment)
BHS
MSH
…
BTS
FTS (file trailer segment)
When you run the file through BizTalk, the subscription engine does not pick up the message, in looking at the details of the message, it looks like this (notice that ParseError is False):
and the body is unparsed
In the BTAHL7 Configuration Explorer you need to turn fragmentation on
The reason why this is happening is because the pipeline component isexpecting the start block (SB) and end block (EB)to be in the data stream so it knows how to seperate each of the messages, if fragmentation is not turned on and it is getting multiple messages, in the messagebox you will get a block of text,negative ParseError and the inability to transform data, it will only be used for routing purposes.
Hope that this helps explain something that is not quite clear from the documentation, or at least anything that I could find.
Fundamentals of WF
Tomorrow (March 20) I am doing a presentation at the Metro Toronto .Net User Group entitled:
Fundamentals of Windows Workflow Foundation (WF).
Most of it will be demos introducing WF. Of course, I will also include BizTalk in the presentation, discussing the differences and similarities between WF and BizTalk and when it is appropriate to use either technology.
The demos will include:
Creating a Sequential Workflow
Communicating with the Host
Logging Workflows
Persisting Workflows
Creating Custom Activities
Creating a State Machine Workflow
Using WF and BizTalk together
You can sign up for the presentation here:
http://www.metrotorontoug.com/User+Group+Events/379.aspx
TVNZ Ondemand Launches
During my presentation yesterday (watch it) I talked about the concept of media convergence…
I used TVNZ as an example to demonstrate these changing times.
This morning I received an email from John Ferguson (Production Manager of Interactive) at TVNZ anouncing the launch of their ondemand service.
I worked with John and his team on the great Vista Sidebar gadget that they produced and I’m convinced that this team really gets it!
Now over to ondemand to try it out!
The Long Tail of TV in NZ is with us!
Great work!
Fun With BizTalk, XPath, and Namespaces
The BizTalk Xpath statements usually required for my projects never seem to be as simple as the examples I find online. Usually, it’s because I’m stuck using namespaces, unlike virtually every sample Xpath ever written.
Last week I was working with an XML document where I wanted to capture the unique values in a repeating […]
Belgian Developer & IT-Pro Days
Next week the Belgian Developer and IT-Pro Days will take place in Ghent. It’s one of the most important Belgian Microsoft events and this year the opening keynote will be presented by David Chappell; one of my favorite speakers! You can still register, so don’t hesitate to get two (or three) days full of technical sessions!
Technorati tags: belgium, devdays
Belgian Developer & IT-Pro Days
Next week the Belgian Developer and IT-Pro Days will take place in Ghent. It’s one of the most important Belgian Microsoft events and this year the opening keynote will be presented by David Chappell; one of my favorite speakers! You can still register, so don’t hesitate to get two (or three) days full of technical sessions!
Technorati tags: belgium, devdays