Before invoking a BAPI via RFC, GeneXus applications must be connected to the SAP server where it is located.
An External Object called GXEnterpriseSessionManager is provided to make the connection.
The first time a BAPI is imported, GeneXus ERP Connector automatically generates this External Object.
GXEnterpriseSessionManager has a Connect method and the following parameters:
| UserName |
Char(40) |
SAP user to be used in the connection |
| Password |
Char(40) |
User's password |
| InstanceNumber |
Char(10) |
Instance number within the server |
| AppServer |
Char(512) |
Name of SAP application server to which we will be connecting |
| RouterString |
Char(512) |
IP of SAP server |
| ClientNumber |
Char(10) |
Number of SAP client |
| SystemId |
Char(10) |
Identifier of the SAP system to be connected |
| SessionName |
Char(40) |
Name that the connection will receive |
| ErrorCode |
Num(5.0) |
Error code when attempting to connect |
| ErrorMessage |
Char(255) |
Error message when attempting to connect |
The connection can be made as shown below (&SAPSessionManager is a variable based on GXEnterpriseSessionManager):
&SAPSessionManager.AppServer = "<SAPServer>"
&SAPSessionManager.ClientNumber = "<ClientIdNumber>"
&SAPSessionManager.RouterString = "/H/<RouterString>/S/<Port>/H/"
&SAPSessionManager.SystemId = "<SystemIdentification>"
&SAPSessionManager.InstanceNumber = "<SystemNumber>"
&SAPSessionManager.SessionName = "<AnyStirng>"
&SAPSessionManager.UserName = "<SAPUser>"
&SAPSessionManager.Password = "<SAPPassword>"
&SAPSessionManager.Connect()
if &SAPSessionManager.ErrorCode.IsEmpty()
<CallAnyBapi>
else
msg('Log in error ' + &SAPSessionManager.ErrorCode.ToString() + ': ' + &SAPSessionManager.ErrorMessage)
endif
This connection option allows changing, at any time during runtime, the user and SAP server used by the application to connect.
Some BAPIs do not run a database Commit, which means that the application must trigger the Commit so that the changes are read to the database
Example code with BAPI SalesOrder (using method CreateFromDat2)
&GXEnterpriseSessionManager.TransactionBegin()
&SalesOrder.CreateFromDat2(.....)
if <no error>
&GXEnterpriseSessionManager.TransactionCommit()
Where &GXEnterpriseSessionManager is of GXEnterpriseSessionManager type (External Object) and
&SalesOrder is of BUS2032 type (contains BAPI methods imported).
Both are external objects automatically added by GeneXus when the selected BAPI is imported.