ADF with BC4J and swing

Question

I created a sample with a pure swing client and using ADF UI designer, I drag-dropped a view object as a Table in the Swing UI. Note I am not using JClient, i am using Swing.
When I run the application, I get:
java.lang.NullPointerException
at oracle.jbo.uicli.jui.JUPanelBinding.bindUIControl(JUPanelBinding.java:808)
at com.churchill.temp.view.Frame1.jbInit(Frame1.java:37)
at com.churchill.temp.view.Frame1.<init>(Frame1.java:22)
at com.churchill.temp.view.Application1.<init>(Application1.java:13)
at com.churchill.temp.view.Application1.main(Application1.java:50)

Answer 1

Hi,
I installed JDeveloper 11.1.1.3.0 and cracked the nut. The LOV driven ComboBoxes in JTables will remain empty after migrating to the new version, but it seems to be merely a bug in the migration. What you need to do in order to get the ComboBoxes working is the following:
I found out that in your PageDefs you need to add two attributes to the <combobox> definitions:
ControlClass="javax.swing.JComboBox" Editable="false"
This makes the ComboBoxes look like in previous releases. If you skip the "Editable" attribute, the user can type in values, which does not really work in LOVs but in static lists.
Unfortunately I experienced another bug in the 11.1.1.3.0 release concerning LOVs: When defining the LOV in the ViewDef, JDeveloper wouldn't let you specify any additional columns to be displayed in the LOV ("Display Attributes"). -> The workaround is much easier than I first thought: Just resize the dialog a little bigger and the selection fields that I first missed appear!
In the moment it looks to me like I could continue development with JDeveloper 11.1.1.3.0.
Mathias
Edited by: user7585671 on 05.05.2010 06:26