Appending XML data to a file using file adaptor

Question

Hi,
I am trying to append data to a file using file adaptor in XML format. (Objective is to store data as XML message in the file). I understand it is possible to append data to an existing file by making appropriate changes in WSDL manually. However, my issue is every time the XML data is appended to a file even the XML header message is also getting appended. As a result the file data does not adhere to defined schema structure anymore.
Is there a way to save XML data in a file in append mode ?
Thanks, Riz

Answer 1

I am having the same issue as well, which makes the output XML an invalid one. I have an XSD that has a hierarchy of elements. whenever I am wiriting the child elements the header message & the name space is also getting written. For example
<?xml version="1.0" ?><Parent xmlns="http://testSchema.com/outputSchema">
<StartDate>01/01/2001</StartDate>
<EndDate>01/30/2001</EndDate>
<Child/>
</Parent>
<?xml version="1.0" ?><Child xmlns:ns1="http://testSchema.com/outputSchema">
<ns1:Id>20012981</ns1:Id>
<ns1:Value/>
<ns1:Date>01/15/2001</ns1:Date>
</Child>
<?xml version="1.0" ?><Child xmlns:ns1="http://testSchema.com/outputSchema">
<ns1:Id>20012981</ns1:Id>
<ns1:Value/>
<ns1:Date>01/15/2001</ns1:Date>
</Child>
I am using a onefile adapter partnerlink to write the parent & an another one for writing the child element, since the child elements will repeat more than once. One other way to fix this issue is write the data using java embedded activity, but that would need a lot of boiler plate code, for writing/reading/appending the same file & for handling all those IOexceptions & buffer IN/outs. I am curious if someone had the same issue & how they resolved it.