URGENT HELP !JCO RETURN structure from SAP

Question

Hello,
I am working on my intern project and I got some trouble.
I have used JDBC to access a table in Oracle(this is an independent DB)I updated a column in the table and selected all data that
was marked as 6 based on the update(SAP needs this data). I passed the values to a JCO application,
which connects to SAP and send the data (I presume what I'm doing is correct) to a structure in SAP.
SAP does some internal calculations with the data and should return the data back using the same
structure but this time with some changes on the data.
For example the field steuk is marked as 7 if the data processing was successful and if the data
structure wasn't successful a 6 will be return.
The return Values should be updated in the oracle DB indicating if the transfer was successful
or not. And next time the same data will be sent to SAP following the same path.
Now when I look at the return getString data in Eclipse, the result seems ambiguous.I don't see the data I presumably
sent to the SAP structure using:
JCO.ParameterList list = function.getTableParameterList();
JCO.Table ztable =  list.getTable("ZSAORA_RUECK");
     for (int i = 0; i < 19; i++) {
     ztable.appendRow();
     ztable.setValue(value,field name);
Am I doing some thing wrong here??? Any Help will be highly appreciated. Codes could be sent to [email protected]
BELOW are the codes:
CONNECTING TO test_table in Oracle DB:
import java.sql.*;
public class DatabaseConnect {
     public static void main(String[] args) {
     Connection con = null;
     Statement stmt = null;
     ResultSet re = null;
     String[] ParamArray;            
        ParamArray = new String[24];
     //Properties logon;
     try {
          Class.forName("oracle.jdbc.driver.OracleDriver");
     con = DriverManager.getConnection
("jdbc:oracle:thin:@226.190.0.1:1521:testdb","test","test1");
     stmt = con.createStatement ();
     stmt.executeUpdate("UPDATE test_table set steuk = 6 WHERE steuk = 5");
ResultSet rs = stmt.executeQuery("SELECT mandt,kokrs,werks,arbpl,aufnr,vornr,ile01,"+
"lsa01,ism01,ile02,lsa02,ism02,ile03,lsa03,ism03,"+
"ile04,lsa04,ism04,steuk,matnr,budat,kostl,pernr,"+
"rueckid FROM test_table where steuk =6");                              
     while (rs.next()) {
     for (int i = 1; i <= 24; i++){
     ParamArray[i-1] = rs.getString(i);
     System.out.print(rs.getString(i) + 't');
     System.out.println();                    
     } catch(Exception e) {
     e.printStackTrace();                    
     } finally {
          try
     if(stmt != null) stmt.close();
     if(con != null) con.close(); 
     } catch (Exception exception) {
          exception.printStackTrace();
     // Bapi call
     TryBapi sap = new TryBapi(ParamArray);
BELOW IS THE JCO Code which connects to SAP and send data to the structure:
import com.sap.mw.jco.IFunctionTemplate;
import com.sap.mw.jco.JCO;
public class TryBapi extends Object {     
JCO.Client mConnection;     
JCO.Repository mRepository;     
OrderedProperties logonProperties;
public TryBapi(String[] paramArray){
     try {
     logonProperties = OrderedProperties.load("/logon.properties");
     mConnection = JCO.createClient((String)logonProperties.get("jco.client.client"),
         (String)logonProperties.get("jco.client.user"),
        (String)logonProperties.get("jco.client.passwd"),
                         null,
       (String)logonProperties.get("jco.client.ashost"),
     String)logonProperties.get("jco.client.sysnr")
     mConnection.connect();
     mRepository = new JCO.Repository("SAPJCO",mConnection);
     catch (Exception ex) {
     ex.printStackTrace();
     System.exit(1);
     JCO.Function function = null;
     JCO.Table tab = null;
     try {
          function = this.createFunction("Z_UPDATE_SAORA_RUECK");
          if (function == null) {
          System.out.println("Z_UPDATE_SAORA_RUECK not found in SAP.");
          System.exit(1);
     JCO.ParameterList list = function.getTableParameterList();
          JCO.Table ztable =  list.getTable("ZSAORA_RUECK"); //inserting 24 records loop.
     for (int i = 0; i < 24; i++) {
     ztable.appendRow(); //ztable.setValue(value, field name)
     ztable.setValue("300","MANDT");
     ztable.setValue("KOKRS" + i, "KOKRS");
     ztable.setValue("WERKS" + i, "WERKS");
     ztable.setValue("ARBPL" + i, "ARBPL");
     ztable.setValue("AUFNR" + i, "AUFNR");
     ztable.setValue("VORNR" + i, "VORNR");
     ztable.setValue("ILE01" + i, "ILE01");
     ztable.setValue("LSA01" + i, "LSA01");
     ztable.setValue("ISM01" + i, "ISM01");
     ztable.setValue("ILE02" + i, "ILE02");
     ztable.setValue("LSA02" + i, "LSA02");
     ztable.setValue("ISM02" + i, "ISM02");
     ztable.setValue("ILE03" + i, "ILE03");
     ztable.setValue("LSA03" + i, "LSA03");
     ztable.setValue("ISM03" + i, "ISM03");
     ztable.setValue("ILE04" + i, "ILE04");
     ztable.setValue("LSA04" + i, "LSA04");
     ztable.setValue("ISM04" + i, "ISM04");
     ztable.setValue("STEUK" + i, "STEUK");
     ztable.setValue("MATNR" + i, "MATNR");
     ztable.setValue("BUDAT" + i, "BUDAT");
     ztable.setValue("KOSTL" + i, "KOSTL");
     ztable.setValue("PERNR" + i, "PERNR");
     ztable.setValue("RUECKID" + i, "RUECKID");
     list.setValue(ztable,"ZSAORA_RUECK");
     function.setTableParameterList(list);
     mConnection.execute(function);
     catch (Exception ex) {
     ex.printStackTrace();
     System.exit(1);
      JCO.Table codes = null;
     try {
     codes = function.getTableParameterList().getTable("ZSAORA_RUECK");
     System.out.println("Return Values starts HERE:");
     for (int i =0; i < codes.getNumRows(); i++){                 
     codes.setRow(i);
     System.out.println(codes.getString("MANDT")+ 't'+
     codes.getValue("KOKRS")+ 't'+
     codes.getString("WERKS")+ 't'+
     codes.getString("ARBPL")+ 't'+
     codes.getString("AUFNR")+ 't'+
     codes.getString("VORNR")+ 't'+
     codes.getString("ILE01")+ 't'+
     codes.getString("LSA01")+ 't'+
     codes.getString("ISM01")
/*     codes.getString("ILE02")+ 't'+
     codes.getString("LSA02")+ 't'+
     codes.getString("ISM02")+ 't'+
     codes.getString("ILE03")+ 't'+
     codes.getString("LSA03")+ 't'+
     codes.getString("ISM03")+ 't'+
     codes.getString("ILE04")+ 't'+
     codes.getString("LSA04")+ 't'+
     codes.getString("ISM04")+ 't'+
     codes.getString("STEUK")+ 't'+
     codes.getString("MATNR")+ 't'+
     codes.getString("BUDAT")+ 't'+
     codes.getString("KOSTL")+ 't'+
     codes.getString("PERNR")+ 't'+
     codes.getString("RUECKID")       */
     catch (Exception ex) {
     ex.printStackTrace();
     System.exit(2);           
     mConnection.disconnect();
public JCO.Function createFunction(String name) throws Exception {
     try {
     IFunctionTemplate ft =     mRepository.getFunctionTemplate(name.toUpperCase());
     if (ft == null)
     return null;
     return ft.getFunction();
     catch (Exception ex) {
     throw new Exception("Problem retrieving JCO.Function object.");
Message was edited by: Rudolph Emange
Message was edited by: Rudolph Emange

Answer 1

Hi Astrid,
Thank you for your remarks. The problem I'm having is that when I do send the values to SAP using the loop:
JCO.ParameterList list = function.getTableParameterList();
JCO.Table ztable =  list.getTable("ZSAORA_RUECK");
     for (int i = 0; i < 19; i++) {
     ztable.appendRow();
     ztable.setValue(value,field name);
I do expect to have(or see) some values when I do access the same table structure(This is just a structure and
not a real table as I do understand that there is a different between a structure and a table in SAP) and
not the field names back.In the second try and catch block:
try {
     codes = function.getTableParameterList().getTable("ZSAORA_RUECK");
     System.out.println("Return Values starts HERE:");
     for (int i =0; i < codes.getNumRows(); i++){                 
     codes.setRow(i);
     System.out.println(codes.getString("MANDT")+ 't'+
     codes.getValue("KOKRS")+ 't'+
     codes.getString("WERKS")+ 't'+
     codes.getString("ARBPL")+ 't'+
     codes.getString("AUFNR")+ 't'+
     codes.getString("VORNR")+ 't'+
     codes.getString("ILE01")+ 't'+
     codes.getString("LSA01")+ 't'+
     codes.getString("ISM01")
I'm trying to access the values I sent in the first try and catch block. I presume I should see some real values and not the
field names.This is how my output looks like:
300     KOKR     WERK     ARBPL0     AUFNR0     VORN     ILE     
300     KOKR     WERK     ARBPL1     AUFNR1     VORN     ILE     
300     KOKR     WERK     ARBPL2     AUFNR2     VORN     ILE     
300     KOKR     WERK     ARBPL3     AUFNR3     VORN     ILE     
300     KOKR     WERK     ARBPL4     AUFNR4     VORN     ILE     
300     KOKR     WERK     ARBPL5     AUFNR5     VORN     ILE
This does not reflect the values but the field names. Why is it this way? Does it mean that my array is wrong or I'm not at all
sending the values. Please HELP ME OUT HERE.
Could any one show me a better way how to send the values selected from Oracle table using perhaps an
ARRAY to the ZSAORA_RUECK structure in SAP?
I am trying to send the values from the select statement in the first jdbc application
to the value field in ztable.setValue(value,  field name).
My Regards!
Message was edited by: Rudolph Emange