How to transfer XML-Data into a WebDynPro-Application?

Question

An external partner has a calling interface that sends a HTTP-Redirect to a specific application-url and transfers all the data in one POST-Parameter.
The value of this POST-Paramater (CALLINTERFACE) consists the XML-Data.
<form id='InterfaceData3' method='post' action='/ProduktFrontController/Start'>
<textarea cols="80" rows="30" name='CALLINTERFACE'><?xml version="1.0" encoding="UTF-8"?>
  <authentifizierung version="1.0">
       XML-Data.....
  </authentifizierung>
<br>
<p><input id='button1' type='submit' name='Button' value='Absenden'></p>
</form>
Standard-Java:
In our Java-Application we can read the POST-Value (XML-Data) via the HTTPServletRequest-Object/Instance.
WebDynPro-Java:
IWDProtocolAdapter protocolAdapter = WDProtocolAdapter.getProtocolAdapter();
IWDRequest request = protocolAdapter.getRequestObject();
String xmlData = request.getParameter("CALLINTERFACE");
In WebDynPro for ABAP I couldnt find a equivalent solution /technic to read the POST-Parameter-Value.
So I have to write a lot of annoying 'glue-code':-(      (HTTP-Request-Handler for reading, Shared Memory / Objects for transfer to WebDynPro ABAP),
(Remark: It's no solution to transfer XML-Data via a URL-Parameter because it is too big (> 1 KByte) and the external partner doesn't support this option!).
My questions:
1) What technics for transfering Data (not only 2 or 3 Parameter) form external web-applications into WebDynPro ABAP applications does SAP support?
2) Is it possible to reach the calling HTTP-Request from WebDynPro-ABAP? (MayBe via ABAP-Callback-Functions)
Sincerely
Steffen

Answer 1

Hi,
thank you for your answers:-)
In conclusion the result is:
1) There is no "direct" way to read POST-Parameter in WebDynPro ABAP
=> You have to write a wrapper in BSP or an ICF -  HTTP_REQUEST_HANDLER
  (A  ABAP-Class that implements the Interface "IF_HTTP_EXTENSION"
     that reads the POST-Parameter-Value and transfers the value into a reachable localtion for WebDynPro-Abap.
2) For parsing the XML-Data I can use for example STRANS tcode or  Simple Transformations
3) For transfering the Data between the BSP / the Request-Handler and WebDynPro for ABAP, I can use for example SharedMemory, Shared Objects.
Regards
Steffen
Edited by: Steffen Spahr on Jul 19, 2011 8:35 AM
Edited by: Steffen Spahr on Jul 19, 2011 8:55 AM