Can ABAP proxy to consume WSDL file be run as background job for every10min

Question

Hi all,
I have a requirement where I need to build an interface which gatheru2019s the purchase order details and send to external third party software in their required format (as an XML file).
So I should be the first point of contact and should trigger the interface each time a purchase order is generated.
So I am thinking that I should develop a background job for every 10 minutes which will look for new purchase orders and gathers the information of the purchase orders and send them to external third party software in their required format.
I have gone through all the SAP forums and e-Learning but still I have confusion in regards to how is it possible technically? Can some one guide me with some information on the same.
I have a little bit of confusion and want to know few things.
1)     Should I create a web service or should I consume a web service?
2)     If I need to consume a web service, then can I write an ABAP proxy to be run in background fro evry 10 minutes? I mean can we run ABAP proxy as a batch job in the background?
3)     Is there a difference between consuming an XML file and WSDL File?
Any Help will be highly appreciated.
Regards,
Jessica.

Answer 1

There are two options (as I know) to generate XML file.
1. Use XML TRANSFORMATION to get the XML string based your TRANSFORMATION. You can input your data and get back the XML string. Download this string to a file
Test XML generation program is:
types: begin of ty_data,
       num   type i,
       end   of ty_data.
DATA: itab TYPE standard table of ty_Data,
      la_data like line of itab,
      xmlstr TYPE string.
DO 3 TIMES.
  la_data-num = sy-index.
  APPEND la_data TO itab.
ENDDO.
CALL TRANSFORMATION ztest_np1
  SOURCE table = itab
  RESULT XML xmlstr.
CALL FUNCTION 'DISPLAY_XML_STRING'
  EXPORTING xml_string = xmlstr.
My ZTEST_NP1 transformation. To create a transformation, click on the transformation in the "CALL TRANSFORMATION ztest_np1" statement. Select Simple transformation type.
<?sap.transform simple?>
<tt:transform xmlns:tt="http://www.sap.com/transformation-templates">
  <tt:root name="table"/>
  <tt:template>
    <table>
      <tt:loop ref=".table">
        <item>
          <tt:value ref="NUM"/>
        </item>
      </tt:loop>
    </table>
  </tt:template>
</tt:transform>
XML string is like:
  <?xml version="1.0" encoding="utf-8" ?>
  <table>
  <item>1</item>
  <item>2</item>
  <item>3</item>
  </table>
To use this option, you have to create a transformation and than use it to generate the XML string.
Check this SAP Help
http://help.sap.com/saphelp_nw04s/helpdata/en/e3/7d4719ca581441b6841f1054ff1326/frameset.htm
2. You can concatenate and create an XML string and download that string into a file.
Regards,
Naimesh Patel