I tried to implement a simple loop by checking the null for the variable and setting in the result.
My portion of mule flow looks like below.
Database(select) -> Transform Message(DataWeave- convert to xml)
Database has value as like below :
Book1 Book2 Book3 Book4 Book5
abc cde fgh ijk lmn
opq rst NULL NULL NULL
Dataweaver code looks like below :
ns0#LibraryDetails:{
ns0#User: payload."Book1",
ns0#User: payload."Book2",
ns0#User: payload."Book3",
ns0#User: payload."Book4",
ns0#User: payload."Book5"
}
Expected output1 is
<LibraryDetails>
<User>abc</User>
<User>cde</User>
<User>fgh</User>
<User>ijk</User>
<User>lmn</User>
</LibraryDetails>
Expected output2 is
<LibraryDetails>
<User>opq</User>
<User>rst</User>
</LibraryDetails>
How can we escape only null values and creating loop in data weave. I tried map function as well. Could you please show some light on this.