This is a simple explanation of how to join together two schemas with a 1:1 relationship between them in the Biztalk Mapper. I came across this problem when I had 2 legacy csv files which needed to be merged (using a unique identifier field in each file) before further processing could occur in a Biztalk Orchestration.

I will show by example. The example is a bit convoluted, but stay with me 😉 different departments are ordering the same parts but are paying different prices we want to see the difference in price for the parts. There are also fields missing from each field which we want to add to the finished schema.

1) So first create 2 schemas one for each department, note the common PartID which is the unique identifier and price, but also not that one file comes with a Part name and another with a manufacturer:

2) Create the Output Schema

3) Now create an orchestration which will call the Map to join the two schemas by taking them both in and using a transform shape to map the two then it will output them

4) Set the transform properties as below create a new map set the destination to the output map

5) Which will create a map

6) Finally the biz … ok on the map join the common fields from the first schema (but not the second) with fields in the output schema now add a script functoid and set it up like this. Using an XSLT template it will search the second message for the values (simple xpath) where the PartID in the first message matches the PartID in the second message. It will then return the value of the price attribute in the second message. From this you can see how powerful using inline xslt is.

7) Add another script block to get the manufacturer field set the inline script buffer to:

9) Join up the schemas in the final map like so … THE END!

R. Addis & Emil @ Microsoft