How to read JCO Table parameter

Question

Hello
I am calling Java function from ABAP side (JCO outbound call). Right now, in the java program I can get the import parameter data, but not the table parameter data. I am using the famous example5.java and the ABAP code is like below:
PARAMETERS: requtext LIKE sy-lisel.
DATA: echotext LIKE sy-lisel,
      resptext LIKE sy-lisel,
      rfctest TYPE TABLE OF rfctest,
      wa_rfctest TYPE rfctest.
wa_rfctest-rfcdata1 = requtext.
wa_rfctest-rfcdata2 = 'Hello World'.
APPEND wa_rfctest TO rfctest.
CALL FUNCTION 'STFC_CONNECTION'
  DESTINATION 'JCO'
  EXPORTING
    requtext = requtext
  IMPORTING
    echotext = echotext
    resptext = resptext
  TABLES
    rfctest  = rfctest.
In the java side it is defined as:
JCO.MetaData fmeta = new JCO.MetaData("STFC_CONNECTION");
        fmeta.addInfo("REQUTEXT", JCO.TYPE_CHAR, 16,   0,     0,       JCO.IMPORT_PARAMETER, null);
        fmeta.addInfo("ECHOTEXT", JCO.TYPE_CHAR, 255,   255,     0,       JCO.EXPORT_PARAMETER, null);
        fmeta.addInfo("RESPTEXT", JCO.TYPE_CHAR, 255,   512,     0,       JCO.EXPORT_PARAMETER, null);
        fmeta.addInfo("RFCTABLE",     JCO.TYPE_TABLE,     144, 0, 0, 0,                    "RFCTEST");
Also RFCTEST structure is defined ( omitted here)
In the handleRequest(JCO.Function function), the following code:
if (function.getName().equals("STFC_CONNECTION")) {
                output.setValue(input.getString("REQUTEXT"),"ECHOTEXT");
                JCO.Table tab = tables.getTable("RFCTABLE");
                System.out.println("RFCTABLE rows = " + tables.getTable("RFCTABLE").getNumRows());
I always get 0 rows in the table RFCTABLE. I checked the trace file in the Java side, I can see the table data are indeed passed to Java side, the JCO just can't pass the data through the API.
Any one has idea of it?
Thank you very much.
Jayson

Answer 1

Andre 
I have read the function Structure of J_1B_NFE_XML_OUT and i don't find the TableParameter or ExportParameter for this FM.
How do you actually get your return parameter?
I don't think here the table type is JCO.Table.
And  i don't know how to use this Function . So i can't test my assumption.
JCO.Table tab = function.getImportParameterList().getTable( "XML_ITEM_TAB" );
normally people use the JCO.Table tab=function.getTableParameterList().getTable();
But XML_ITEM_TAB is not a Table parameter.
I don't know if table type from importParmeter can convert themself like that.But you still can try it.
hope that be helpful!