Calling BAPIs from Java

 

Calling BAPIs from Java 

This is an example program for calling a BAPI from the IBM development platform, Access Builder for SAP R/3.

Detailed program examples are shipped with the Access Builder for R/3.

Access Builder for SAP R/3

//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 R/3 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
// 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;

}

}