Debugging a RFC call using JCo API

Most of the JCO classes like JCO.Function, JCO.Table, JCO.ParameterList, JCO.Record and JCO.Structure supports writeHTML(String) and writeXML(String) method.

writeHTML(String filename) -> method takes the file name as an input parameter and writes the dump of the corresponding object into a file in the form of HTML document.

writeXML(String filename) -> method takes the file name as an input parameter and writes the dump of the corresponding object into a file in the form of XML document.

This can serve as a very easy tracing mechanism while making a RFC call using JCo API to verify whether everything went as expected or not.

Java Code Snippet:

JCO.Repository mRepository; mRepository = new JCO.Repository(“MyFunctions”, mConnection); IFunctionTemplate ft = mRepository.getFunctionTemplate (“ZANY_RFC_MODULE”); JCO.Function function = ft.getFunction(); mConnection.execute(function); function.writeHTML(“C:\function.html”); function.writeXML(“C:\function.xml”);

The following were the dump files created as a result of the code.

HTML Dump:

XML Dump:

Similar dump files can also be created for other JCO Objects like Table, ParameterList, Structure etc by calling their corresponding writeHTML(String) or writeXML(String) function.

8 Comments

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Former Member October 2, 2005 at 2:18 pm

also jco.setAbapDebug(true) just before execution will launch the function module in sapgui and you can debug all the way through (from java to SAP)

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1. Former Member Post authorOctober 3, 2005 at 1:13 am
  
  Hi,
  Thanks for the information. This I have covered in my next weblog Debugging a RFC call using JCo API, Part-2.
  
  Regards,
  Tarun
  
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Former Member November 6, 2005 at 4:55 pm

Hi Tarun,

Nice to see the blog.
I have one question here. I would appreciate if you answer my query. (since your area of intrest include opens source and ur blog is abt RFC Connection)
I would like to know, Is there a way by which i can connect to SAP r/3 (to bapi’s rfc etc etc) by any open source standard means(not through any SAP propriety means bcos i dont want to spenf on anything more other than r/3 installation..) and get the data and show it to a user? Is there some way by the bapi’s or rfc’s can we made as web services etc?
Hope you understand my question?

Regards
Gaurav

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1. Gregor Wolf November 6, 2005 at 9:50 pm
  
  Hello Gaurav,
  
  starting with SAP Basis aka SAP Web AS 6.20 you can call all BAPI’s and RFC Enabled Function Modules as a Web Service. So if you have SAP R/3 4.70 and higher just go on.
  
  Regards
  Gregor
  
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  1. Former Member November 7, 2005 at 8:43 am
    
    Hi Gregor,
    
    Can you provide me with some more details as to how to achieve this?
    How can i expose the rfc’s as web services and then i hope it will be possible for me to access that web service through Java and show the data.
    
    Regards
    Gaurav Gandhi
    
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    1. Former Member November 7, 2005 at 8:49 pm
      
      Hi,
      
      To expose RFCs as web services, please check out http://help.sap.com/saphelp_nw04/helpdata/en/e5/a68d10f4eb894087fc9c1c3f9ae433/content.htm.
      
      Regards
      
      Shehryar
      
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      1. Former Member November 8, 2005 at 1:57 pm
        
        Hi Gregor & Shehryar,
        
        Thanx for the link.
        
        Gaurav
        
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    2. Former Member November 7, 2005 at 9:11 pm
      
      You can also check out Thomas Jung’s presentation on exposing RFCs as webservices in both 620 and 640. The presentation is available at https://www.sdn.sap.com/irj/servlet/prt/portal/prtroot/docs/library/uuid/a4433436-0301-0010-f2a9-9281ad574054
      
      Regards
      
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