Yesterday I changed my target file from Kepler RC1 to Luna Nightly because I wanted to test a bug that was fixed in Luna (background.disabled property in SWT look and feel).
This made my application throw various exceptions in connection with AbstractListBox and AbstractTreeBox.
In my forms I have various Fields extending either AbstractListBox<Long> and AbstractTreeBox<Long>. On some of them I have defined the following method to sort the entries:
@Override
protected void execFilterLookupResult(LookupCall call, List<LookupRow> result) throws ProcessingException {
java.util.Collections.sort(result, new LookupRowComparator(LookupRowComparator.MODE_KEY));
}
And LookupRowComparator roughly looks as follows:
@Override
public int compare(LookupRow object1, LookupRow object2) {
if (object1 == null) return -1;
if (object2 == null) return 1;
if (mode == MODE_TEXT) {
return object1.getText().compareTo(object2.getText());
}
else { // mode == MODE_KEY
return ((Long) object1.getKey()).compareTo((Long) object2.getKey());
}
}
When opening this form, I now suddenly get the following exception:
!ENTRY org.eclipse.scout.rt.client 4 0 2013-10-03 14:35:16.387
!MESSAGE org.eclipse.scout.rt.client.services.common.exceptionhandler.internal.InternalClientExceptionHandlerService.differentiatedLog(InternalClientExceptionHandlerService.java:116) ProcessingException: ProcessingStatus[ERROR code=0 TabbedForm / Unexpected java.lang.ClassCastException: java.math.BigDecimal incompatible with java.lang.Long]
!STACK 0
ProcessingException[ProcessingStatus[ERROR code=0 TabbedForm / Unexpected java.lang.ClassCastException: java.math.BigDecimal incompatible with java.lang.Long]]
at org.eclipse.scout.rt.client.ui.form.FormUtility$InitFieldVisitor.visitField(FormUtility.java:170)
at org.eclipse.scout.rt.client.ui.form.fields.listbox.AbstractListBox.visitFields(AbstractListBox.java:888)
at org.eclipse.scout.rt.client.ui.form.fields.AbstractCompositeField.visitFields(AbstractCompositeField.java:268)
at org.eclipse.scout.rt.client.ui.form.fields.AbstractCompositeField.visitFields(AbstractCompositeField.java:268)
at org.eclipse.scout.rt.client.ui.form.fields.AbstractCompositeField.visitFields(AbstractCompositeField.java:268)
at org.eclipse.scout.rt.client.ui.form.fields.AbstractCompositeField.visitFields(AbstractCompositeField.java:268)
at org.eclipse.scout.rt.client.ui.form.AbstractForm.visitFields(AbstractForm.java:1002)
at org.eclipse.scout.rt.client.ui.form.FormUtility.initFormFields(FormUtility.java:77)
at org.eclipse.scout.rt.client.ui.form.AbstractForm.initForm(AbstractForm.java:1179)
at org.eclipse.scout.rt.client.ui.form.AbstractForm.startInternal(AbstractForm.java:685)
at org.eclipse.minicrm.client.ui.forms.TabbedForm.startDisplay(TabbedForm.java:303)
at org.eclipse.minicrm.client.ui.desktop.Desktop$TabbedFormTool.execAction(Desktop.java:1279)
at org.eclipse.scout.rt.client.ui.action.AbstractAction.doAction(AbstractAction.java:292)
at org.eclipse.scout.rt.client.ui.action.AbstractAction$P_UIFacade.fireActionFromUI(AbstractAction.java:629)
at org.eclipse.minicrm.ui.swt.application.CoolbarButton$1.run(CoolbarButton.java:175)
at org.eclipse.scout.rt.ui.swt.concurrency.SwtScoutSynchronizer$1.runVoid(SwtScoutSynchronizer.java:60)
at org.eclipse.scout.rt.client.ClientJob.runStatus(ClientJob.java:189)
at org.eclipse.scout.rt.client.ClientJob.runTransactionWrapper(ClientJob.java:172)
at org.eclipse.scout.rt.client.ClientJob.run(ClientJob.java:159)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: java.lang.ClassCastException: java.math.BigDecimal incompatible with java.lang.Long
at org.eclipse.minicrm.client.utils.LookupRowComparator.compare(LookupRowComparator.java:106)
at org.eclipse.minicrm.client.utils.LookupRowComparator.compare(LookupRowComparator.java:1)
at java.util.Arrays.mergeSort(Arrays.java:2874)
at java.util.Arrays.mergeSort(Arrays.java:2886)
at java.util.Arrays.mergeSort(Arrays.java:2886)
at java.util.Arrays.sort(Arrays.java:3251)
at java.util.Arrays.sort(Arrays.java:3269)
at java.util.Collections.sort(Collections.java:1961)
at org.eclipse.minicrm.client.ui.forms.TabbedForm$MainBox$MainGroupBox$TabBox$Sandbox4Box$ListBoxField.execFilterLookupResult(TabbedForm.java:2624)
at org.eclipse.scout.rt.client.ui.form.fields.listbox.AbstractListBox.filterLookupResult(AbstractListBox.java:501)
at org.eclipse.scout.rt.client.ui.form.fields.listbox.AbstractListBox.execLoadTableData(AbstractListBox.java:183)
at org.eclipse.scout.rt.client.ui.form.fields.listbox.AbstractListBox.execPopulateTable(AbstractListBox.java:217)
at org.eclipse.scout.rt.client.ui.form.fields.listbox.AbstractListBox.loadListBoxData(AbstractListBox.java:474)
at org.eclipse.scout.rt.client.ui.form.fields.listbox.AbstractListBox.initFieldInternal(AbstractListBox.java:357)
at org.eclipse.scout.rt.client.ui.form.fields.AbstractFormField.initField(AbstractFormField.java:830)
at org.eclipse.scout.rt.client.ui.form.FormUtility$InitFieldVisitor.visitField(FormUtility.java:161)
... 19 more
The problem seems to be the following line in my comparator:
return ((Long) object1.getKey()).compareTo((Long) object2.getKey());
Changing my field definitions to AbstractListBox<BigDecimal> and my comparator to:
return ((BigDecimal) object1.getKey()).compareTo((BigDecimal) object2.getKey());
solves the problem, but is not really what I want to do...
Similarly, on those forms where I use AbstractListBox<Long> without the execFilterLookupResult() call, I get the following exeception the moment I tick a checkbox for one of the entries:
!ENTRY org.eclipse.scout.rt.client 4 0 2013-10-03 14:38:43.325
!MESSAGE org.eclipse.scout.rt.client.ui.basic.tree.AbstractTree.fireTreeEventInternal(AbstractTree.java:2180) fire TreeEvent["P_InternalTreeNode[Deutschland]" TYPE_NODES_UPDATED]
!STACK 0
java.lang.ArrayStoreException
at org.eclipse.scout.rt.client.ui.form.fields.treebox.AbstractTreeBox.syncTreeToValue(AbstractTreeBox.java:953)
at org.eclipse.scout.rt.client.ui.form.fields.treebox.AbstractTreeBox.access$2(AbstractTreeBox.java:935)
at org.eclipse.scout.rt.client.ui.form.fields.treebox.AbstractTreeBox$1.treeChanged(AbstractTreeBox.java:312)
at org.eclipse.scout.rt.client.ui.basic.tree.AbstractTree.fireTreeEventInternal(AbstractTree.java:2177)
at org.eclipse.scout.rt.client.ui.basic.tree.AbstractTree.fireNodesUpdated(AbstractTree.java:1957)
at org.eclipse.scout.rt.client.ui.basic.tree.AbstractTree.setNodeChecked(AbstractTree.java:1097)
at org.eclipse.scout.rt.client.ui.basic.tree.AbstractTreeNode.setChecked(AbstractTreeNode.java:401)
at org.eclipse.scout.rt.client.ui.basic.tree.AbstractTree.interceptNodeClickSingleObserver(AbstractTree.java:2071)
at org.eclipse.scout.rt.client.ui.basic.tree.AbstractTree.fireNodeClick(AbstractTree.java:2057)
at org.eclipse.scout.rt.client.ui.basic.tree.AbstractTree.access$2(AbstractTree.java:2054)
at org.eclipse.scout.rt.client.ui.basic.tree.AbstractTree$P_UIFacade.fireNodeClickFromUI(AbstractTree.java:2623)
at org.eclipse.scout.rt.ui.swt.basic.tree.SwtScoutTree$5.run(SwtScoutTree.java:475)
at org.eclipse.scout.rt.ui.swt.concurrency.SwtScoutSynchronizer$1.runVoid(SwtScoutSynchronizer.java:60)
at org.eclipse.scout.rt.client.ClientJob.runStatus(ClientJob.java:189)
at org.eclipse.scout.rt.client.ClientJob.runTransactionWrapper(ClientJob.java:172)
at org.eclipse.scout.rt.client.ClientJob.run(ClientJob.java:159)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Again, changing the field to AbstractListBox<BigDecimal> solves the problem, but again, I don't really feel like changing the types of all my ListBox fields.
Just a wild guess: Could this have anything to do with the changes described in this thread: http://www.eclipse.org/forums/index.php/t/523968/ ?
] 
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