Problem with a Domain applied to an Entity attribute

Question

I have created a validation domain that has the following logic in it. It is simply to check to see if the account number is in the correct format. I am trying to determine if validation domains at the entity level will serve our purpose. The custom code portion of the domain is listed below.
/**Implements domain validation logic and throws a JboException on error.
This code checks that the account number is in the format 99999.9999.99 July 10, 2007 mb
protected void validate() {
if (mData != null) {
int length = mData.length();
if (length < 9) {
throw new JboException("Account Number must be at least 9 long in the format of 99999.9999 or 99999.9999.99");
char currentChar;
for (int i = 0; i < length; i++) {
currentChar = mData.charAt(i);
if (i == 5 && currentChar != '.') {
throw new JboException("Account Number must be in the format of 99999.9999.9.");
When I apply it to the entity object initially it works well and is listed once on the Entity Attribute Type drop down list. When I test the Application Module at the Entity level (i.e. right click the Application Module and select "test", it initially works well.
Then without explanation, I try to click on the attribute that has this domain applied to it, and I get the following NullPointerException error with the domain listed twice on the Entity Attribute Type drop down list. I can only remove the domain assigned to the Entity Attribute in the structure pane.
Has anyone else seen this?
Mary
UofW
java.lang.NullPointerException
     at oracle.jbo.dt.ui.entity.EOAttributePanel.enableDomainFilter(EOAttributePanel.java:1142)
     at oracle.jbo.dt.ui.entity.EOAttributePanel.updateControls(EOAttributePanel.java:517)
     at oracle.jbo.dt.ui.entity.EOAttributePanel.setAttribute(EOAttributePanel.java:871)
     at oracle.jbo.dt.ui.entity.EOAttributeTabPanel.updateControls(EOAttributeTabPanel.java:202)
     at oracle.jbo.dt.ui.entity.EOAttributeTabPanel.setAttribute(EOAttributeTabPanel.java:189)
     at oracle.jbo.dt.ui.entity.EOEditAttributeTabPanel.attrValueChanged(EOEditAttributeTabPanel.java:316)
     at oracle.jbo.dt.ui.entity.EOEditAttributeTabPanel.enter(EOEditAttributeTabPanel.java:104)
     at oracle.jbo.dt.ui.main.dlg.DtuWizard.selectPage(DtuWizard.java:724)
     at oracle.jbo.dt.ui.main.dlg.DtuWizard.selectPage(DtuWizard.java:699)
     at oracle.jbo.dt.ui.entity.EOWizard.selectPage(EOWizard.java:213)
     at oracle.jbo.dt.ui.main.dlg.DtuWizard.newMddPageSelected(DtuWizard.java:745)
     at oracle.jbo.dt.ui.main.dlg.DtjMddTraversable.onEntry(DtuMddNavigable.java:266)
     at oracle.ide.panels.MDDPanel.enterTraversableImpl(MDDPanel.java:926)
     at oracle.ide.panels.MDDPanel.enterTraversable(MDDPanel.java:899)
     at oracle.ide.panels.MDDPanel.mav$enterTraversable(MDDPanel.java:106)
     at oracle.ide.panels.MDDPanel$Tsl.updateSelectedNavigable(MDDPanel.java:1348)
     at oracle.ide.panels.MDDPanel$Tsl.updateSelection(MDDPanel.java:1216)
     at oracle.ide.panels.MDDPanel$Tsl.actionPerformed(MDDPanel.java:1210)
     at javax.swing.Timer.fireActionPerformed(Timer.java:271)
     at javax.swing.Timer$DoPostEvent.run(Timer.java:201)
     at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:153)
     at java.awt.Dialog$1.run(Dialog.java:515)
     at java.awt.Dialog.show(Dialog.java:536)
     at java.awt.Component.show(Component.java:1300)
     at java.awt.Component.setVisible(Component.java:1253)
     at oracle.jbo.dt.ui.main.dlg.DtjDialog.setVisible(DtjDialog.java:137)
     at oracle.jbo.dt.ui.main.dlg.DtjMddWizardDialog.setVisible(DtuWizard.java:2376)
     at oracle.bali.ewt.dialog.JEWTDialog.runDialog(Unknown Source)
     at oracle.bali.ewt.dialog.JEWTDialog.runDialog(Unknown Source)
     at oracle.jbo.dt.ui.main.dlg.DtjDialog.showDialog(DtjDialog.java:115)
     at oracle.jbo.dt.ui.main.dlg.DtjMddWizardDialog.showDialog(DtuWizard.java:2315)
     at oracle.jbo.dt.ui.main.dlg.DtuWizard.createMddWizard(DtuWizard.java:500)
     at oracle.jbo.dt.ui.main.dlg.DtuWizard.setVisible(DtuWizard.java:321)
     at oracle.jbo.dt.ui.entity.EOWizard.setVisible(EOWizard.java:223)
     at oracle.jbo.dt.ui.main.dlg.DtuWizard.showDialog(DtuWizard.java:299)
     at oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeEOWizard(JdxMenuManager.java:970)
     at oracle.jbo.dt.jdevx.ui.JdxMenuManager.invokeEntityWizard(JdxMenuManager.java:948)
     at oracle.jbo.dt.ui.main.DtuMenuManager.doEditMenuAction(DtuMenuManager.java:1413)
     at oracle.jbo.dt.jdevx.ui.JdxMenuManager.handleDefaultAction(JdxMenuManager.java:407)
     at oracle.ide.controller.ContextMenu.fireDefaultAction(ContextMenu.java:343)
     at oracle.ideimpl.explorer.BaseTreeExplorer.fireDefaultAction(BaseTreeExplorer.java:1576)
     at oracle.ideimpl.explorer.BaseTreeExplorer.dblClicked(BaseTreeExplorer.java:1913)
     at oracle.ideimpl.explorer.BaseTreeExplorer.mouseReleased(BaseTreeExplorer.java:1934)
     at oracle.ideimpl.explorer.CustomTree.processMouseEvent(CustomTree.java:176)
     at java.awt.Component.processEvent(Component.java:5253)
     at java.awt.Container.processEvent(Container.java:1966)
     at java.awt.Component.dispatchEventImpl(Component.java:3955)
     at java.awt.Container.dispatchEventImpl(Container.java:2024)
     at java.awt.Component.dispatchEvent(Component.java:3803)
     at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
     at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3892)
     at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
     at java.awt.Container.dispatchEventImpl(Container.java:2010)
     at java.awt.Window.dispatchEventImpl(Window.java:1774)
     at java.awt.Component.dispatchEvent(Component.java:3803)
     at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
     at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
     at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
     at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

Answer 1

Frank:
Thanks so much for your reply. I apologize for not saying that my JDeveloper version is 10.1.3.1.0.
And Yes, the error is NOT in the tester, it is received when I click on the Attribute that has the domain applied to it in the Entity Object Editor in the Applications Navigator therefore locking up that Entity Object Editor.
I can only remove the domain from that entity through the structure pane attribute editor AND when I look at the available entity attribute types drop down list, there my domain (which happens to be called UWAcctNumDomain) is listed twice with the path on my 'C' drive preceding the name. When I first created the domain, it was only listed once. Somehow it is now listed twice and that may be the cause of the error.
I am testing the usability of domains for our purposes. We are establishing re-usable business rules for our Oracle tables and establishing them in a Entity Object jar file with all relationships, column titles, history columns, etc. We would like to define as much as possible at the Model layer so that when they are re-used, those business rules are already established and therefore this will save development time.
The reason I used the Java Code instead of Expression Language is simply that I took an example of a formatting domain from page 311 of the Oracle JDeveloper 10g Handbook and customized it for our account numbers.
Any input you have is greatly appreciated.
Mary
UofW