Call EJB from ABAP in NW2004s

Hello everybody,
I'm trying to call a EJB function from ABAP code in NW2004s. I search SDN for almost two days now but can't get it to work.
Here is what I've done:
- created a EBJ in SAP NetWeaver Developer Studio 7.0.11 (came with our NetWeaver installation dvds)
- added a function: public void processFunction(com.sap.mw.jco.JCO.Function function)
- edited ejb-j2ee-engine.xml setting : <jndi-name>Z_ISR_BLOG</jndi-name>
- found that in jndi registry under: rfcaccessejb/Z_ISR_BLOG
now something I don't understand by reading in SDN:
- I created a JCo RFC Provider called ISRJCO and entered connection informations for our system
- I created a entry in sm59 (type TCPIP, registered remote programm) and connection test worked for it
How do I now access my EJB? Does anybody have some howto links for me?
Thank you very, very much in advance!
Thorsten

Hi Thorsten,
you will have to use your bean with the processFunction() method.
http://help.sap.com/saphelp_nw04s/helpdata/en/6a/82343ecc7f892ee10000000a114084/frameset.htm
       1.      On startup the JCo RFC Provider service connects to the Web AS repository.
       2.      On startup the JCo RFC Provider service registers itself at the Gateway with a defined name. It is possible to register it under different names and at different Gateways.
       3.      The Web AS calls a function for the registered RFC destination.
This graphic is explained in the accompanying text
Make sure that the function is defined in the repository!
       4.      The Gateway forwards the call to the JCo RFC Provider service.
       5.      The JCo RFC Provider service looks in the JNDI for the EJB, which is registered under the function name.
This graphic is explained in the accompanying text
The name of the function must be identical with the JNDI name of the bean, that is, it is necessary to have a JNDI name. If there is no such name, the JCo RFC Provider service will not be able to find the bean.
It is advisable for the beans to be written with a LocalHome interface.
       6.      The JCo RFC Provider service calls the processFunction(JCO.Function) method of the EJB found.
       7.      The results of that call (the modified JCO.Function) are passed to the Gateway.
       8.      The Gateway passes the results back to the Web AS.
Have a look here too: http://help.sap.com/saphelp_nw04/helpdata/en/0f/74e2963e4f9840ab9a4b9e10c5ebcb/frameset.htm
Regards,
Chris
Edited by: Christian Cz. on Apr 15, 2009 4:33 PM

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Any program for calling bapi from ABAP step by step

any program for calling bapi from ABAP step by step
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Hi Jagrut,
BAPI stands for Business API(Application Program Interface).
A BAPI is remotely enabled function module ie it can be invoked from remote programs like standalone JAVA programs, web interface etc..
You can make your function module remotely enabled in attributes of Function module but
A BAPI are standard SAP function modules provided by SAP for remote access. Also they are part of Businees Objest Repository(BOR).
BAPI are RFC enabled function modules. the difference between RFc and BAPI are business objects. You create business objects and those are then registered in your BOR (Business Object Repository) which can be accessed outside the SAP system by using some other applications (Non-SAP) such as VB or JAVA. in this case u only specify the business object and its method from external system in BAPI there is no direct system call. while RFC are direct system call Some BAPIs provide basic functions and can be used for most SAP business object types. These BAPIs should be implemented the same for all business object types. Standardized BAPIs are easier to use and prevent users having to deal with a number of different BAPIs. Whenever possible, a standardized BAPI must be used in preference to an individual BAPI.
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Reading instances of SAP business objects
GetList ( ) With the BAPI GetList you can select a range of object key values, for example, company codes and material numbers.
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GetDetail() With the BAPI GetDetail() the details of an instance of a business object type are retrieved and returned to the calling program. The instance is identified via its key. The BAPI GetDetail() is an instance method. BAPIs that can create, change or delete instances of a business object type
The following BAPIs of the same object type have to be programmed so that they can be called several times within one transaction. For example, if, after sales order 1 has been created, a second sales order 2 is created in the same transaction, the second BAPI call must not affect the consistency of the sales order 2. After completing the transaction with a COMMIT WORK, both the orders are saved consistently in the database.
Create( ) and CreateFromData! ( )
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Change( )
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Delete( ) and Undelete( ) The BAPI Delete() deletes an instance of an SAP business object type from the database or sets a deletion flag.
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ex BAPI:
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You can get good help form the following links,
BAPI-step by step
http://www.sapgenie.com/abap/bapi/example.htm
list of all bapis
http://www.planetsap.com/LIST_ALL_BAPIs.htm
for BAPI's
http://www.sappoint.com/abap/bapiintro.pdf
http://www.sappoint.com/abap/bapiprg.pdf
http://www.sappoint.com/abap/bapiactx.pdf
http://www.sappoint.com/abap/bapilst.pdf
http://www.sappoint.com/abap/bapiexer.pdf
http://service.sap.com/ale
http://service.sap.com/bapi
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCMIDAPII/CABFAAPIINTRO.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/CABFABAPIREF/CABFABAPIPG.pdf
http://help.sap.com/printdocu/core/Print46c/en/data/pdf/BCFESDE8/BCFESDE8.pdf
http://www.planetsap.com/Bapi_main_page.htm
http://www.topxml.com/sap/sap_idoc_xml.asp
http://www.sapdevelopment.co.uk/
http://www.sapdevelopment.co.uk/java/jco/bapi_jco.pdf
Also refer to the following links..
www.sappoint.com/abap/bapiintro.pdf
www.sap-img.com/bapi.htm
www.sap-img.com/abap/bapi-conventions.htm
www.planetsap.com/Bapi_main_page.htm
www.sapgenie.com/abap/bapi/index.htm
Checkout !!
http://searchsap.techtarget.com/originalContent/0,289142,sid21_gci948835,00.html
http://techrepublic.com.com/5100-6329-1051160.html#
http://www.sap-img.com/bapi.htm
http://www.sap-img.com/abap/bapi-conventions.htm
http://www.sappoint.com/abap/bapiintro.pdf
http://sap-img.com/bapi.htm
EG::
Here is the step by step procedure for creating BAPIs.
There are 5 different steps in BAPI.
- Create BAPI Structure
- Create BAPI Function Module or API Method.
- Create BAPI object
- Release BAPI Function Module.
- Release BAPI object.
Step1. Creating BAPI Structure:
- Go to <SE11>.
- Select Data Type & Enter a name.
- Click on Create.
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- Select Structure & hit ENTER.
- Enter the fields from your database. Make sure that the first field is the Primary Key Field.
- Then SAVE & ACTIVATE.
Step 2. Creating BAPI module:
- Enter TR.CODE <SE37>.
- Before entering any thing, from the present screen that you are in, select the menu
Goto -> Function Groups -> Create Group.
Enter a name (Note: This name Must start with ZBAPI)
Let this screen be as it is and open another window and there, enter TR.CODE <SE80).
Click on the Third ICON that says Inactive Objects.
Select the group that you just created and click on Activate.
Notice that the group you created will disappear from the list of inactive objects.
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Now click on the first Tab that says [ATTRIBUTES] and select the radio button that says remote-enabled module since we will be accessing this from any external system.
Then click on the second tab that says [IMPORT].
Enter a PARAMETER NAME, TYPE and the structure you created in the first step. Also select the check box Pa. All remotely enabled functional modules MUST be Pa enabled, where Pa means Passed by Value and if you dont select Pa, then that means it will be passed by reference..
Then click on tab that says [EXPORT].
Enter the following as is in the first three fields
RETURN TYPE BAPIRETURN (These 3 field values are always same)
Here also select Pa meaning Pass by value.
Note: BAPIRETURN contains structure with message fields.
Then SAVE and ACTIVATE.
Step 3. Creating BAPI object:
- Enter Tr.Code <SWO1> (Note. It is letter O and not Zero).
- Enter a name and then click on create. Enter details.
NOTE: Make sure that that Object Type and Program name are SAME.
- Enter Application M, if you are using standard table Mara. If you are using your own database then select Z at the bottom.
- Then hit <ENTER>.
- Now we have to add Methods. High light METHODS and then select the following from the menu:
Goto Utilities -> API Methods -> Add Methods.
- Enter function Module name and hit <ENTER>.
- Select the second FORWARD ARROW button (>)to go to next step.
- Check if every thing looks ok and again click on FORWARD ARROW button (>).
- Then select YES and click on <SAVE>.
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Here select the menu combination shown below in the same order.
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- Edit -> Change Release Status -> Object Type Component -> To Released.
- Edit -> Change Release Status -> Object Type -> To Implemented.
- Edit -> Change Release Status -> Object Type -> To Released.
- Then click on <SAVE>.
- Then click on Generate Button (4th button from left hand side looks like spinning wheel).
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To check if this is present in work flow goto TR.CODE <BAPI>.
Here it shows business object repository.
- First click on the middle button and then select ALL and hit ENTER.
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Reward pts if found usefull :)
regards
Sathish

Calling EJB from other EJB on other J2EE Server

Can I call EJB from other EJB on other J2EE Server
Servers - Websphere 5.0
Do i require home & remote interface of that ejb on client side also
Help me, please

the problem is actually i require that is specific to websphere
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I have a problem with calling an external webservice via HTTPS.
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[Thr 11] Thu May 26 16:02:57 2011
[Thr 11] *** ERROR during SecudeSSL_SessionStart() from SSL_connect()==SSL_ERROR_SSL
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SAP_ABA 700 0012 SAPKA70012 Componenti validi per tutte le applicazioni
SAP_BASIS 700 0012 SAPKB70012 Componenti di base SAP
PI_BASIS 2005_1_700 0012 SAPKIPYJ7C PI_BASIS 2005_1_700
ST-PI 2008_1_700 0001 SAPKITLRD1 SAP Solution Tools Plug-In
SAP_BW 700 0013 SAPKW70013 SAP NetWeaver BI 7.0
SAP_AP 700 0010 SAPKNA7010 Piatt. d'applicazione SAP
CCM 200_700 0010 SAPK-27010INCCM CCM 200_700 : Add-On Supplement
SRM_PLUS 550 0010 SAPKIBK010 SRM_PLUS per mySAP SRM
SRM_SERVER 550 0010 SAPKIBKT10 SRM_SERVER
BI_CONT 703 0001 SAPKIBIIP1 Contenuto Business Intelligence
ST-A/PI 01L_BCO700 0000 - Servicetools for other App./Netweaver 04
What do you think about it?
Best regards,
Norberto.

Don´t forget to set your proxy settings! Be sure that the application server could establish a connection to the external server.
From the BLog.
Thr 11 WARNING in ssl3_read_bytes: (536875072/0x20001040) received a fatal SSLv3 handshake failure alert message from the peer
From the Error.
Have you looked into the above details?
Thanks
SM

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thnx

Hi Sabbir,
Following code works for me in calling EJB from normal java application. Did you added the jar files to your application?. see the required jar files in end of code.
Create simple java applcation do the following steps:
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Proxy Program to call ejb:
import javax.naming.Context;
import javax.naming.InitialContext;
import com.sample.Hello;
import com.sample.HelloHome;
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Under Class path settings for the program put the following jar files.
You can search for them from net weaver soruce folders
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ejb20.jar
logging.jar
exception.jar
sapj2eeclient.jar
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this makes testing of your client programs easier, you can find the error trace on which line and saves lot of time.
Regards, Suresh

Calling EJB from app client

Hello, everybody,
I'm very new at EJB and I'm trying to learn it.
I have created Enterprise Application using Netbeans IDE, I have EJB and APP client. What I want is to connect to my MySql database and get some info from table.
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What server you are using?
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import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;
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 <jndi-name>some name</jndi-name>
 <connection-url>jdbc:mysql://localhost:3306/dbname</connection-url>
 <driver-class>com.mysql.jdbc.Driver</driver-class>
 <user-name>root</user-name>
 <password>root password</password>
 <min-pool-size>5</min-pool-size>
 <max-pool-size>100</max-pool-size>
 <idle-timeout-minutes>15</idle-timeout-minutes>
 <exception-sorter-class-name>com.mysql.jdbc.integration.jboss.ExtendedMysqlExceptionSorter</exception-sorter-class-name>
 <valid-connection-checker-class-name>com.mysql.jdbc.integration.jboss.MysqlValidConnectionChecker</valid-connection-checker-class-name>
 </local-tx-datasource>
</datasources>also at resources/META-INF directory you must have persistence.xml like this
<persistence>
 <persistence-unit name="SimpleEjb">
 <jta-data-source>java:/some name</jta-data-source>
 <properties>
 <property name="hibernate.hbm2ddl.auto" value="update" />
 <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
 <property name="hibernate.show_sql" value="true"/>
 <property name="hibernate.format_sql" value="true"/>
 </properties>
 </persistence-unit>
</persistence>

Create EJB and call it from ABAP

Hi all,
I have written a stand-alone-Java application, which should be converted into a web application, which has no gui.
This application should be triggered by a abap-program.
Following questions, do I have to write a servlet and a ejb or is it possible to call the ejb directly from the abap-program?
What do I have to do make an outbound call from abap?
Thank you for your support.
Kind regards, Patrick.

Hi.
You can call the EJB directly from Abap. XI uses this functionality extensively.
Follow these steps:
1) Deply the bean on the java stack.
2) You now need to setup a RFC destination in the JCO RFC Provider service in the j2ee visual adminstrator. Point the Repository section to the application server you want to run the Abap reort on. When you do this the j2ee engine will register itself as a possible RFC destination on this application server.You can choose your own program id...
3) You then need to goto tran sm59 on the app server where the Abap report is going to run and setup a connection of tcp type to the j2ee machine. Specify the same program id you used in step in the technical settings.
4) Then just use the bean name when you do the rfc call in the abap report.
Hope this helps if U have not done it yet.

Calling EJB from class in same ear

Has anyone ever attempted to call an EJB from a class that is in the same ear?
I have a singleton class, not
another EJB, that is trying to get ahold of an EJB to call a method. This method
has been defined to have both
a local and remote interface.
I thought I should be able to get a hold of the local interface. When I try to
get the interface out of JNDI
as follows:
PickupCpaLocalHome cpaHome = (PickupCpaLocalHome) ctx.lookup("pickup.PickupCpaEJBLocal");
I get an exception:
javax.naming.LinkException: [Root exception is
     javax.naming.NameNotFoundException: Unable to resolve
     'app/ejb/PickupCpaEJB.jar#PickupCpaEJB/local-home' Resolved: 'app/ejb'
     Unresolved:'PickupCpaEJB.jar#PickupCpaEJB' ; remaining name
     'PickupCpaEJB.jar#PickupCpaEJB/local-home']; Link Remaining Name:
'java:app/ejb/PickupCpaEJB.jar#PickupCpaEJB/local-home'
When I look at the JNDI tree using the WebLogic console, it shows that "pickup.PickupCpaEJBLocal"
is
in JNDI.
Since the local interface doesn't work, I thought I'd try the remote interface.
The remote interface
works fine from my client and from another EJB in a different ear. Using the
remote interface I get an
exception when trying to cast the result to my home.
java.lang.ClassCastException:
com.fedex.pickup.j2ee.ejb.cpa.PickupCpaEJB_gapk5_HomeImpl_WLStub
// Code
PickupCpaHome cpaHome = (PickupCpaHome) ctx.lookup("pickup.PickupCpaEJBRemote");
As I mentioned earlier, the same code works in a client and in an EJB in another
ear.
Any ideas

Has anyone ever attempted to call an EJB from a class that is in the same ear?
I have a singleton class, not
another EJB, that is trying to get ahold of an EJB to call a method. This method
has been defined to have both
a local and remote interface.
I thought I should be able to get a hold of the local interface. When I try to
get the interface out of JNDI
as follows:
PickupCpaLocalHome cpaHome = (PickupCpaLocalHome) ctx.lookup("pickup.PickupCpaEJBLocal");
I get an exception:
javax.naming.LinkException: [Root exception is
     javax.naming.NameNotFoundException: Unable to resolve
     'app/ejb/PickupCpaEJB.jar#PickupCpaEJB/local-home' Resolved: 'app/ejb'
     Unresolved:'PickupCpaEJB.jar#PickupCpaEJB' ; remaining name
     'PickupCpaEJB.jar#PickupCpaEJB/local-home']; Link Remaining Name:
'java:app/ejb/PickupCpaEJB.jar#PickupCpaEJB/local-home'
When I look at the JNDI tree using the WebLogic console, it shows that "pickup.PickupCpaEJBLocal"
is
in JNDI.
Since the local interface doesn't work, I thought I'd try the remote interface.
The remote interface
works fine from my client and from another EJB in a different ear. Using the
remote interface I get an
exception when trying to cast the result to my home.
java.lang.ClassCastException:
com.fedex.pickup.j2ee.ejb.cpa.PickupCpaEJB_gapk5_HomeImpl_WLStub
// Code
PickupCpaHome cpaHome = (PickupCpaHome) ctx.lookup("pickup.PickupCpaEJBRemote");
As I mentioned earlier, the same code works in a client and in an EJB in another
ear.
Any ideas

Calling EJB from JSP in SSL Mode

Hi,
I need to call an EJB from JSP in SSL Mode.
How can i do that.
Regards,
S.V.Satish Kumar

In that case you can refer to the following documents:
Using JPA: http://help.sap.com/saphelp_nwce711/helpdata/en/44/eba6292f446c30e10000000a114a6b/frameset.htm
Accessing persistence functionality in EJB 3.0: http://help.sap.com/saphelp_nwce711/helpdata/en/46/307a2a50094f09e10000000a114a6b/frameset.htm
Tell me, if these documents help you. Otherwise, I will search for more information on the topic.
Best regards,
Ekaterina

Call EJB from ABAP in NW2004s

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