How to avoid the presence of element in the Destination file if the value is empty

Question

Hi,
I am using a map, in which Source is an XML File, Destination is a FlatFile
For Eg:
Input File
<Name>
FirstName>aaa</FirstName>
<LastName>bbb</LastName>
</Name>
Output File
FirstName     LastName
aaa                bbb
Destination Schema is also the same, but if the Last name value is empty, the LastName element should not be present in the Destination Flat File.
Eg:
Input File
<Name>
FirstName>aaa</FirstName>
<LastName></LastName>
</Name>
OutputFile should be
FirstName
aaa
Please help in making this requirment....
Regards, Vignesh S

Answer 1

Set the “Min Occurs” property of the LastName header element in the flat-file schema to “0” (Zero)
Create a map which maps the Schema for the XML file to the flat-file schema.
In the map, use the Logical Existence and Value mapping as shown in the below image. Here Logical
Existence function is used to check the existence of the field LastName in the input XML. If LastName element exist, then using the Value mapping functiod, map the Contant-LastName  (this
would be the header). Below image shall help you with thisexplanation.
 As you can see, for the detail record, the value is mapped directly and for the header, as per you requirement a check has been made to for the existence of the LastName
field in the XML to populate the LastName header node. If LastName is empty in the XML, header LastName would not be populated.
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