Execute SQLJ/JDBC within InfoBus Data Form???

Question

Is there a way to execute SQLJ or JDBC from within the InfoBus data forms without opening a new connection?
Is there a way to execute SQLJ or JDBC via the Business Components using the connection already established in the InfoBus frame?
Please post any samples if this can be done.
Thanks
Andrew

Answer 1

Andrew,
The best way to do what you are asking is to create a custom method at the application module or view object level, export that to your client, then call the method from the form.
Here is an example from a JSP Web Application. The basic idea is the same though.
1. Double-click the appmoduleImpl.java file for your application module to open it in the code editor (expand the Application Module node to find this source file, if there is not one there, edit your app module, click on the Java tab, and check the Generate Java Files checkbox, click Finish and rebuild your project).
2. Enter the code that you want to execute (I've included an example below that calls a stored PL/SQL procedure to calculate a value).
3. Compile the file to make sure your code is OK.
4. Edit the Application Module and click on the Client Methods tab. You should see your new method in the Available list.
5. Shuttle the method to the Selected list.
6. Click Finish and rebuild your project.
7. From your Infobus client code, call the method you just wrote. You may need to include the package that contains the business components code.
Note that when you export client methods from your BC4J project, you may need to include the stubs for these methods in your client project, depending on how you deploy your BC4J project. For example, if you deploy your BC4J app module as an EJB, the deployment process will generate the client stubs for these exported methods into a separate project (or you can specify to have them generated into your client project on the Remotable tab of the app module wizard). See the online docs for deployment for more information.
Example exported client method:
public int getTotalHits(String mon, String year) {
CallableStatement stmt = null;
int total;
String totalhits = "{? = call walkthru.total_hits(?,?)}";
stmt = getDBTransaction().createCallableStatement(totalhits, 1);
try
// Bind the Statement Parameters and Execute this Statement
stmt.registerOutParameter(1,Types.INTEGER);
stmt.setString(2,mon);
stmt.setString(3,year);
stmt.execute();
total = stmt.getInt(1);
catch (Exception ex)
throw new oracle.jbo.JboException(ex);
finally
try
stmt.close();
catch (Exception nex)
return total;
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