C++ Look alike for Java EJB-- JPA-- Backing Store

Hi All,
I'm familar with the creation of an EJB data model , JPA, and tying it into Coherence via Toplink Essentials to the Data Store of my choice. What is the mechanizum used for doing the same with a C++ client wrting cache objects and having Coherence back store those ojects to a database of chioce?

Hi Morsie,
C++ is only supported for Extend clients.
Here is some information on C++ extend clients:
http://coherence.oracle.com/pages/viewpage.action?pageId=1343491
Extend clients are not actually members of the cluster but instead connect to the cluster via TCP/IP. So, since cache store operations occur in the cluster, they are completely unaffected by the fact that you are accessing a cache via a C++ Extend client.
Please let me know if you have any further questions.
-John

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Crossposted:
Problem generating stubs for Java EJB web service deployed in OAS

Jpa backing store - what is the key [ newbie alert]

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Hi mesocyclone,
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Entities may be mapped either by annotating the entity
classes or by adding an orm.xml or other XML mapping
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Best regards,
Robert

Looking for Java programmers for a new project

I am currently looking to find about 5 people to start a new company to develop some ebusiness related business ideas. Location does not matter, only creativity and a willingness to change the status quo. If you are interested email me at [email protected] I am just a guy with some really unique ideas looking for people that share my vision and that are looking to start a company from the ground up.

Hi,
Are you still looking for Java programmers? Can we participate in your work offline? I am in France now. Tell me what exactly you need? I am 5yers experienced in Java technlogy.
Reply back to [email protected]
Regards,
Murthy

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<enterprise-beans>
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</session-deployment>
</enterprise-beans>
</orion-ejb-jar>
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public class ServiceABean implements SessionBean
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To figure out what's actually happening during lookup I debugged a little bit and
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2. So a lookup for "env" on that FlatMapContext also works and returns an instance of SubContext.
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with message "java:comp/env/ejb not found".
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Regards
--thomas

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Visual Age for Java 3.0 and EJBs

Michael,
We are also seeing problems with EJB development using the VAJ integration kit
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john
Michael Girdley wrote:
We plan to release an integration kit for VisualAge soon. Please check our
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Thanks,
Michael
Michael Girdley
Product Manager, WebLogic Server & Express
BEA Systems Inc
Vladimir Goncharov <[email protected]> wrote in message
news:[email protected]...
I'm getting Exception, when trying to create Initial context from withinthe
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works fine when run from the command line using JDK.2.2
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C:\weblogic\lib\weblogicaux.jar;
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****[ java.lang.InternalError: (Ex02) An error has occurred. ]
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John N. Alegre
Javelin Solutions
[email protected]

When we starting IR and ID, it will look for java web start platform? why?

When we starting IR and ID, it will look for java web start platform? why?

hi praveen,
Java web start is platform to launch the java application.
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check the below blog
Java Web Start
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enzo

Hi Enzo,
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See this thread too
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https://media.sdn.sap.com/javadocs/NW04/SPS15/um/index.html
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Hi folks,
I am starting my journey into JAVA programming Great. That's nice to hear. :)
-I am
wondering if there are any cheap or free Integrated
Development Environment (IDE) for compiling and
running Java programs. Lucky for you therer is :) .
I downloaded SDK (Software development kit ,version 1.2) and I am finding it
rather painful to run the commands manually to compile
and run Java programs. Any help would be greatly
appreciatedHeh, I hated command line programming, especially from the dos prompt on
windos platform.
>
I also downloaded Jbuilder(university edition) from
the book Java -how to program ,third edition by Deitel
and Deitel -had some problems with it and
unfortunately discovered that it is for Windows 95 and
NT while I have windows 98I'd recommend a few others.
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hello frndz,
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Why not study Sun's tutorials on Java? Here they are: http://java.sun.com/docs/books/tutorial/index.html
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Problem in connecting to database from webdynpro for java

Hi
I have a problem in connecting to database from webdynpro application
I am using oracle 10 express edition as database and was able to connect to database from a java application.But was unable to connect from a webdynpro for java.
<b>I guess webdynpro for java uses open sql instead of vendor sql(I looked in the visual admin ,DB is using open sql) so unable to connect to database.Am i right.?</b>
Do i need to make any settings in the visual admin to make it work?
How to solve this problem.Please give me pointers
Thanks
Bala

Hi,
For connecting to Oracle, either you can use the normal JDBC connectivty code directly which is given below :
DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@Oracle_server_ip:Oracle port:SID of the Database","user_name","password");
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1) Open the J2EE perspective
2) Create an EJB Module project
3) Right click on ejbModule, create a new EJB (select your EJB type)
4) While creating the ejb itself, you can add business methods by clicking Next in the UI. Another option is after creating the ejb, write the method in the bean, then select the method from ejb-jar.xml -> <bean name> ->method. Right click and select propogate to local & remote.
5) Double click on ejb-j2ee-engine.xml. select your bean and specify a Jndi name for eg: MyJndi.
6) Right click on the EJB project and add classes12.zip file (provided by Oracle) to its build path. (under libraries tab). Also check the same file under Order & Export.
7) Create an Enterprise Application project.
8) Right click on the EJB module project and select add to EAR project, then select the created EAR project.
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Java Build path - select the EJB project from projects , check the selected project under Order & Export
Project references select the EAR project
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You can find the vendor name under application-j2ee-engine.xml file of the EAR project. By default it is sap.com. So if my EAR projects name is ABC, my entry would look like sap.com/ABC
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InitialContext context = new InitialContext();
Object obj = context.lookup("MyJndi");
MyEJBHome home = MyEJBHome)PortableRemoteObject.narrow(obj,MyEJBHome.class);
MyEJB mybean = home.create();
int a = 0;
a= mybean.add(10,15);
wdContext.currentContextElement().setSum(a);
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DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@Oracle_server_ip:Oracle port:SID of the Database","user_name","password");
Statement stmt = conn.createStatement();
ResultSet rs = stmt.executeQuery("your query");
Extracted from Re: Webdynpro and Oracle
http://help.sap.com/saphelp_webas630/helpdata/en/b0/6e62f30cbe9e44977c78dbdc7a6b27/frameset.htm
May be of use to understand the VA Conf /people/varadharajan.krishnasamy/blog/2007/02/27/configuring-jdbc-connector-service-to-perform-database-lookups
Regards
Ayyapparaj

Can I modify the value of an enviroment entry for an EJB without having to re-deploy.

I wish to modify the value of an envrioment entry for an EJB. The entry already exists and has been created using
<env-entry>
<env-entry-name>myFlag</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
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</env-entry>
I can access the value using code similar to the following:-
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Hi,
As per J2EE specification:
Naming environment entries allow customization of a component during deployment or assembly without the need to access or change the component?s source code. The container implements the naming environment, and provides it to the component instance through a JNDI naming context.
The Deployer can modify values of environment entries that have been previously set by the Application Component Provider and/or Application Assembler.
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Please feel free to ask further questions.
Sanjeev,
Developer Support, Sun ONE Application Server-India.

Catching errors in Web Dynpro for Java when thrown from RFC Raise Exception

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I'm looking for information that explains how a Web Dynpro for Java application responds and processes errors that are thrown from a Raise Exception event within an RFC.
The Exceptions do not appear to be part of the Model and I can't identify how they get processed.
When rfc HRXSS_CAT_WD_RECORD raises exception PERNR_NOT_LOCKED this exception is passed back to the calling webdynpro CAT DC that displays the exception on the web page along with the log.
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C++ Look alike for Java EJB-- JPA-- Backing Store

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