Calling BAPIs from Java 

This is an example program for calling a BAPI from the IBM development platform, Access Builder.

Detailed program examples are shipped with the Access Builder.

Access Builder

//Importing the required classes:

import com.sap.rfc.*;
import com.sap.rfc.exception.*;
import com.ibm.sap.bapi.*;
import com.ibm.sap.bapi.generated.*;

//Connecting to the SAP System:

static private IRfcConnection establishConnection(MiddlewareInfo aMiddlewareInfo)

   throws JRfcRemoteException

{

   IRfcConnection aConnection = null ;

   ConnectInfo aConnectInfo = null ;

   UserInfo aUserInfo = null ;

   String orbServerName = aMiddlewareInfo.getOrbServerName() ;

   // Please adjust the values written in UPPERCASE LETTERS
   // in the lines below so that they fit to your needs!
   // If you don't know the correct values ask your system
   // administrator!
   // After correcting these values you should change the
   // <bAdjusted> variable in the following line
   // from "false" to "true".
   // Then you can re-compile ("javac SampleCompanyCode.java") and
   // re-run ("java SampleCompanyCode -conn JNI") this sample...

   boolean bAdjusted = true;

   if (!bAdjusted) {

      throw (new JRfcRfcConnectionException (

         "Please adjust the Connection-Parameters to your
                 needs! (See method \"establishConnection\")"));

   } 

    //Connection information:

   aConnectInfo = new ConnectInfo (

      3,    // int aRfcMode 3=R/3 or 2=R/2

      null,    // String aDestination

      "9.7.12.7", // String aHostName YOUR  HOSTNAME (e.g. IP-
                     //address)

      0,      // int aSystemNo YOUR SYSTEM-NUMBER

      null,          // String aGatewayHost

      null,          // String aGatewayService

      null,          // String aSystemName

      null,          // String aGroupName

      null,          // String aMsgServer

      false,         // Boolean isLoadBalancing

      true);         // Boolean isCheckAuthorization

    //User information:

   aUserInfo = new UserInfo (

      "MUSTER",      // String aUserName,    YOUR USERID

      "IDES",     // String aPassword,    YOUR PASSWORD

      "800",      // String aClient, YOUR CLIENT NUMBER

      "e",        // String aLanguage, YOUR PREFERRED
                            //LANGUAGE

      1103);      // int aCodePage YOUR REQUIRED CODEPAGE  

    //Technical conversion for the selected middleware;
    // Open connection:

   IRfcConnectionFactory aConnectionFactory = FactoryManager.getSingleInstance().getRfcConnectionFactory() ;

   aConnection = aConnectionFactory.createRfcConnection(aConnectInfo, aUserInfo) ;

   aConnection.open() ;

   //Returning the connection:

   return aConnection ;

}

//Calling the main method:

public static void main (java.lang.String[] args)

  //Setting up the connection using the selected middleware:

{

   MiddlewareInfo aMiddlewareInfo = new MiddlewareInfo(args) ;

   FactoryManager aFactoryManager = FactoryManager.getSingleInstance() ;

   aFactoryManager.setMiddlewareInfo(aMiddlewareInfo) ;

    //Initializing the connection object:   

   IRfcConnection aConnection = null ;

   try

   {

      aConnection = establishConnection(aMiddlewareInfo) ;

   }

   catch (Exception ex)

   {

      System.out.println("ERROR : Could not create connection : " + ex) ;

      System.exit(-1) ;

   } 

   System.out.println("Connection established.");

   // --- TEST CODE (start) --------------------------------------

   try

   {

      printList(aConnection) ;

//Calling the BAPI:

  //Declare an empty Object ID for the Business Object
  //CompanyCode:    

      objectId = CompanyCode.getEmptyObjectId() ;

   //Entering a value in the object ID:  

      objectId.getKeyField("COMPANYCODEID").setString("1000") ;

   //Instantiate the object CompanyCode with the object ID:

      companyCode = new CompanyCode(objectId) ; // Create 2nd
         CompanyCode

      System.out.println ("Successfully created new CompanyCode : '" + companyCode + "'") ;

      printDetails(companyCode, aConnection) ;

   } 

   // --- TEST CODE (end) ----------------------------------------

   catch (Exception ex)

   {

      System.out.println ("Unexpected exception occurred:");

      System.out.println (ex);

   }

}

private static void printDetails(CompanyCode companyCode, IRfcConnection connection)

{

   try  

   {

    //Declare the parameters of the BAPI CompanyCode.GetDetail:

      CompanyCodeGetdetailParams aCompanyCodeGetdetailParams =

         new CompanyCodeGetdetailParams() ;

    //Aufruf des BAPIs CompanyCode.GetDetail auf die Objektinstanz:

      companyCode.getdetail(connection,   aCompanyCodeGetdetailParams);

      //Splitting the parameter object into its separate components
      //(Struktur):

      Bapi0002_2Structure struct = aCompanyCodeGetdetailParams.getCompanycodeDetail() ;

      System.out.println ("The details of the companycode are : ") ;

      //Splitting the structure into individual fields:    

      System.out.println ("CompCode :           '" + struct.getCompCode()  + "'");

      System.out.println ("CompName :           '" + struct.getCompName()  + "'");

      System.out.println ("City1 :              '" + struct.getCity()  + "'");

      System.out.println ("Country1 :           '" + struct.getCountry() + "'");

      System.out.println ("Currency :           '" + struct.getCurrency() + "'");

      System.out.println ("Langu1 :             '" + struct.getLangu() + "'");

      System.out.println ("ChrtAccts :          '" + struct.getChrtAccts() + "'");

      System.out.println ("FyVariant :          '" + struct.getFyVariant() + "'");

      System.out.println ("VatRegNo :           '" + struct.getVatRegNo() + "'");

      System.out.println ("Company :            '" + struct.getCompany() + "'");

      System.out.println ("AddrNo :             '" + struct.getAddrNo() + "'"); 

      System.out.println() ;

   }

   catch (Exception ex)

   {

      System.out.println("Exception in printDetails() : " + ex) ;

   } 

   return;

}

private static void printList(IRfcConnection connection)

{

   try  

   {

      //Declaring the parameter object:     

      CompanyCodeGetlistParams aCompanyCodeGetlistParams =

         new CompanyCodeGetlistParams() ;

      //Actual BAPI call:

      CompanyCode.getlist(connection, aCompanyCodeGetlistParams);

      //Splitting the parameter objects into its separate components
      //(Table):

      Bapi0002_1Table table = aCompanyCodeGetlistParams.getCompanycodeList();

      int rowCount = table.getRowCount() ;

      System.out.println ("Returned table has " + rowCount + " lines.");

      //Evaluating the table row by row:

      for (int i = 0; i < rowCount; i++)

      {

         Bapi0002_1TableRow row = table.getRow(i) ;

         System.out.println("\t" + row.getCompCode() + "\t" + row.getCompName()) ;

      }

      System.out.println() ;

   }

   catch (Exception ex)

   {

      System.out.println("Exception in printList() : " + ex) ;

   } 

   return;

}

}