There was a question in Microsoft
BizTalk Server General Forum where the requirement was to promote values on
the messages extracted from a batch of messages using orchestration.
How it could be implemented?
To promote the properties in orchestration one need to initialize the correlation set as demonstrated by Sarvana Kumar in his blog. But you can initialize the correlation set only once so here is the way to initialize correlation set multiple times.
I am just extending the code shared by Stephen W. Thomas for Envelope and XPath Debatching in an Orchestration Lab
Download the code from above link and follow these steps:
Step 1. Run the Visual
Studio Conversion Wizard to convert the solution.
Step 2. Remove PortDebatching project from solution
you don’t need it for this excercise.
Step 3. Open the XPathSample.odx and create a
correlation type and correlation set as shown below:
Step 4. Create a variable
with name CompanyName and type string and initialize it as shown
below:
CompanyName=xpath(SingleInput,"string(/*[local-name()='Data'
and namespace-uri()='']/*[local-name()='Company' and
namespace-uri()=''])");
Step 5. Drop a message
assignment shape in the ConstrustMapped
shape and use the following expression:
SingleMapped(BTS.DestinationParty)=CompanyName;
Step 6. Select the send
shape SendSingleMessage and
initialize the correlation set Correlation_Party
If you will try to build this BizTalk Project now
you will get the compile time error: “'Correlation_Party':
a correlation may be initialized only once”
How
to get rid of error “'Correlation_Party':
a correlation may be initialized only once”?
- Add a scope shape to the loop and set the Transaction Type for this scope to Automic/Long Running/None.
Note: The only requirement is to have scope shape with the correlation set defined on this scope level. You can set the transaction type to None or atomic or long running for the scope depending on your requirement.
- Cut the correlation set Correlation_Party from orchestration level and paste it to the level of this new scope.
- Move the send shape to this new scope.
Note: Check once again that the send port is initializing the correlation set 'Correletaion_Party'.
Build and deploy the solution and you will see Destination
Party get promoted with the value of company name for each message generated in the loop.
Cheers,
Rohit
Sharma
