I hope you’ve read the first Parts of this Weblog series:
Finally I close this Weblog Series with a JCo code example. This example creates a Business Partner and read this newly created BP.
logon.properties
To make it easier for you to adopt your login information I’ve set up an external logon.properties file. This is the content:
jco.client.client=002
jco.client.user=developer
jco.client.passwd=XXXXXXXX
jco.client.ashost=gateway
jco.client.sysnr=00
jco.client.lang=EN
jco.client.abap_debug=0
jco.client.use_sapgui=0
With the Property jco.client.abap_debug you have the possibility to debug the function calls. But SAP GUI has to be installed on the system where you execute the code.
BupaCreate.java
This is the example Code using the SAP Java Connector:
import com.sap.mw.jco.*;
public class BupaCreate {
// Name of the ClientPool
static final String POOL_NAME = "Pool";
JCO.Client mConnection;
// The repository we will be using
IRepository repository;
public BupaCreate()
{
try {
JCO.Pool pool = JCO.getClientPoolManager().getPool(POOL_NAME);
if (pool == null) {
OrderedProperties logonProperties =
OrderedProperties.load("/logon.properties");
JCO.addClientPool(POOL_NAME, // pool name
5, // maximum number of connections
logonProperties); // properties
}
mConnection = JCO.getClient(POOL_NAME);
// Create a new repository
repository = JCO.createRepository("MYRepository", POOL_NAME);
}
catch (Exception ex) {
ex.printStackTrace();
}
}
// Retrieves and prints information about the remote system
public void BupaCreateFromData()
{
try {
// Get a function template from the repository
IFunctionTemplate ftemplate =
repository.getFunctionTemplate("BAPI_BUPA_CREATE_FROM_DATA");
IFunctionTemplate ftemplatecommit =
repository.getFunctionTemplate("BAPI_TRANSACTION_COMMIT");
IFunctionTemplate ftemplateread =
repository.getFunctionTemplate("BAPI_BUPA_CENTRAL_GETDETAIL");
// if the function definition was found in backend system
if(ftemplate != null) {
// Create a function from the template
JCO.Function function = ftemplate.getFunction();
JCO.Function commit = ftemplatecommit.getFunction();
JCO.Function read = ftemplateread.getFunction();
// Set up Import Parameters
JCO.ParameterList imports = function.getImportParameterList();
JCO.Structure centralDataPerson =
imports.getStructure("CENTRALDATAPERSON");
centralDataPerson.setValue("Gregor","FIRSTNAME");
centralDataPerson.setValue("Wolf","LASTNAME");
function.getImportParameterList().setValue("1", "PARTNERCATEGORY");
// Get a client from the pool
JCO.Client client = JCO.getClient(POOL_NAME);
// We can call 'RFC_SYSTEM_INFO' directly since it does
// not need any input parameters
client.execute(function);
// Get table containing the return
JCO.Table returntab =
function.getTableParameterList().getTable("RETURN");
// Print results
if (returntab.getNumRows() > 0) {
// Loop over all rows
do {
System.out.println("-----------------------------------------");
// Loop over all columns in the current row
for (JCO.FieldIterator e =
returntab.fields(); e.hasMoreElements();) {
JCO.Field field = e.nextField();
System.out.println(field.getName() + ":\t" + field.getString());
}//for
} while(returntab.nextRow());
}
else {
System.out.println("No Errors in the RETURN Table found");
// Read new BUSINESSPARTNER Number
String bpNumber =
function.getExportParameterList().getString("BUSINESSPARTNER");
System.out.println("New Business Partner Number: " + bpNumber);
// Commit
client.execute(commit);
// Set
read.getImportParameterList().setValue(bpNumber, "BUSINESSPARTNER");
// Commit
client.execute(read);
// Read Export
JCO.ParameterList readExport = read.getExportParameterList();
JCO.Structure readCentralDataPerson =
readExport.getStructure("CENTRALDATAPERSON");
System.out.println("Firstname: " +
readCentralDataPerson.getString("FIRSTNAME"));
System.out.println("Lastname : " +
readCentralDataPerson.getString("LASTNAME"));
}//if
// Release the client into the pool
JCO.releaseClient(client);
}
else {
System.out.println(
"Function BAPI_BUPA_CREATE_FROM_DATA not found in backend system.");
}
}
catch (Exception ex) {
System.out.println("Caught an exception: \n" + ex);
}
}
protected void cleanUp() {
JCO.removeClientPool(POOL_NAME);
}
public static void main(String[] argv)
{
BupaCreate e = new BupaCreate();
e.BupaCreateFromData();
e.cleanUp();
}
}
