[ocl] Unhandled event loop exception

[eclipse-ocl-bot]

| --- | --- | | Bugzilla Link | 450177 | | Status | RESOLVED FIXED | | Importance | P3 normal | | Reported | Nov 05, 2014 11:47 EDT | | Modified | Jun 18, 2015 04:13 EDT | | Reporter | EPP Error Reports |

Description

Hello committers,

we received a new error report for Eclipse 4.5.0.I20140918-0330.

General Information:\ anonymous-id: ee6a7cf4-6277-45ce-b349-ac81306b3e3f\ eclipse-build-id: 4.5.0.I20140918-0330\ eclipse-product: org.eclipse.epp.package.modeling.product\ operating system: Windows7 6.1.0 (x86_64) - win32\ java-runtime-version: 1.7.0_45-b18

The following plug-ins were present on the execution stack (*):

1. org.eclipse.core.databinding.observable_1.4.1.v20140910-2107
2. org.eclipse.core.databinding_1.4.100.v20140910-2107
3. org.eclipse.core.runtime_3.10.0.v20140724-1132
4. org.eclipse.e4.ui.workbench_1.2.0.v20140905-1352
5. org.eclipse.e4.ui.workbench.swt_0.12.100.v20140908-1525
6. org.eclipse.emf.ecore_2.11.0.v20140916-0346
7. org.eclipse.emf_2.6.0.v20140929-0830
8. org.eclipse.emf.edit_2.11.0.v20140929-0830
9. org.eclipse.emf.edit.ui_2.11.0.v20140929-0830
10. org.eclipse.equinox.app_1.3.200.v20130910-1609
11. org.eclipse.equinox.launcher_1.3.0.v20140415-2008
12. org.eclipse.jface_3.11.0.v20140822-0942
13. org.eclipse.ocl.examples.pivot_3.5.0.v20141001-1658
14. org.eclipse.ocl.examples_3.4.100.v20140713-1723
15. org.eclipse.ocl_3.5.0.v20140725-2247
16. org.eclipse.swt_3.104.0.v20140916-1012
17. org.eclipse.ui_3.107.0.v20140911-1616
18. org.eclipse.ui.ide.application_1.0.600.v20140909-1818
19. org.eclipse.ui.ide_3.10.100.v20140905-0917

Error Status:

code:                   0\
plugin:                 org.eclipse.ui_3.107.0.v20140911-1616\
message:                Unhandled event loop exception\
fingerprint:            d35778b6\
exception class:        org.eclipse.swt.SWTException\
exception message:      Failed to execute runnable (java.lang.NullPointerException)\
number of children:     0\
\
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)\
at org.eclipse.swt.SWT.error(SWT.java:4441)\
at org.eclipse.swt.SWT.error(SWT.java:4356)\
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:139)\
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4147)\
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)\
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)\
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)\
at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)\
at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)\
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:637)\
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)\
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:580)\
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)\
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:141)\
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)\
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)\
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)\
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)\
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)\
at sun.reflect.NativeMethodAccessorImpl.invoke0(null:-2)\
at sun.reflect.NativeMethodAccessorImpl.invoke(null:-1)\
at sun.reflect.DelegatingMethodAccessorImpl.invoke(null:-1)\
at java.lang.reflect.Method.invoke(null:-1)\
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)\
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)\
at org.eclipse.equinox.launcher.Main.run(Main.java:1465)\
at org.eclipse.equinox.launcher.Main.main(Main.java:1438)\

caused by: java.lang.NullPointerException: null\ at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSettingDelegate(BasicEObjectImpl.java:1561)\ at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicGet(BasicEObjectImpl.java:1045)\ at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eDynamicGet(BasicEObjectImpl.java:1037)\ at org.eclipse.ocl.examples.pivot.internal.impl.RootImpl.eGet(RootImpl.java:217)\ at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjectImpl.java:1011)\ at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eGet(BasicEObjectImpl.java:1003)\ at org.eclipse.emf.edit.provider.ItemProviderAdapter.getValue(ItemProviderAdapter.java:167)\ at org.eclipse.emf.edit.provider.ItemProviderAdapter.getChildren(ItemProviderAdapter.java:381)\ at org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildren(ItemProviderAdapter.java:422)\ at org.eclipse.emf.edit.provider.ItemProviderAdapter.hasChildren(ItemProviderAdapter.java:409)\ at org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider.hasChildren(AdapterFactoryContentProvider.java:194)\ at org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer.java:2141)\ at org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer.java:553)\ at org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer.java:2171)\ at org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(AbstractTreeViewer.java:2863)\ at org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.java:804)\ at org.eclipse.jface.viewers.AbstractTreeViewer.updateChildren(AbstractTreeViewer.java:2755)\ at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1918)\ at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:684)\ at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefreshStruct(AbstractTreeViewer.java:1925)\ at org.eclipse.jface.viewers.TreeViewer.internalRefreshStruct(TreeViewer.java:684)\ at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1893)\ at org.eclipse.jface.viewers.AbstractTreeViewer.internalRefresh(AbstractTreeViewer.java:1850)\ at org.eclipse.jface.viewers.StructuredViewer$8.run(StructuredViewer.java:1554)\ at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1462)\ at org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:366)\ at org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1423)\ at org.eclipse.jface.viewers.StructuredViewer.refresh(StructuredViewer.java:1551)\ at org.eclipse.jface.viewers.ColumnViewer.refresh(ColumnViewer.java:534)\ at org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider$ViewerRefresh.refresh(AdapterFactoryContentProvider.java:495)\ at org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider$ViewerRefresh.run(AdapterFactoryContentProvider.java:459)\ at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)\ at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:136)\ at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4147)\ at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3764)\ at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$9.run(PartRenderingEngine.java:1151)\ at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)\ at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1032)\ at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:148)\ at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:637)\ at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:337)\ at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:580)\ at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:150)\ at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:141)\ at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)\ at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)\ at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)\ at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:380)\ at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:235)\ at sun.reflect.NativeMethodAccessorImpl.invoke0(null:-2)\ at sun.reflect.NativeMethodAccessorImpl.invoke(null:-1)\ at sun.reflect.DelegatingMethodAccessorImpl.invoke(null:-1)\ at java.lang.reflect.Method.invoke(null:-1)\ at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:648)\ at org.eclipse.equinox.launcher.Main.basicRun(Main.java:603)\ at org.eclipse.equinox.launcher.Main.run(Main.java:1465)\ at org.eclipse.equinox.launcher.Main.main(Main.java:1438)\

Messages, stacktraces, and nested status objects may be shortened. Please visit \ http://dev.eclipse.org/recommenders/committers/confess/0.5/reports/-\ for the complete error log.

Some general information and guidelines about how to use this bug report:

1. Feel free to move this bug to your own product and components. Please note\ that this bug is only accessible to Eclipse committers. If you move this bug\ please make sure that it's still in the "Security Advisor" group.

2. The bug contents of the fields status, resolution, keywords, and whitelist\ are presented to reporters. If you needs more information, please set the\ keyword "needinfo". This will trigger a specialized dialog asking the user\ to provide further details.

3. Use the following resolutions for the following situations:

   • CLOSED / FIXED: This bug has been fixed. Please provide additional\ information in the whiteboard field.
   • CLOSED / WORKSFORME: Use this resolution if you can't reproduce this issue\ and request further information. Please use the whiteboard text to specify\ more details what a user should provide and how.
   • CLOSED / INVALID: Use this resolution if the reported problem is a\ 'user-configuration' problem. Please consider giving hints how to fix\ these issues in the whiteboard field.
   • CLOSED / NOT ECLIPSE: Use this if the problem is caused by another plugin\ not developed at Eclipse.org
   • CLOSED / MOVED: If this bug has been moved else where. Please provide more \ information (e.g. a link) in the whiteboard field.

4. Please remember that only committers can view and comment on this bug. You\ may, however, manually add the reporting user to the bug's cc list. But keep\ in mind that the report may contains sensitive information.

5. If you are missing a feature, please file a enhancement request here:\ https://bugs.eclipse.org/bugs/enter_bug.cgi?product=Recommenders.Incubator&component=Stacktraces\ \

Thank you for your assistance.\ Your friendly error-reports-inbox.

--

• Note: The list of present bundles and their respective versions was\ calculated by package naming heuristics. This may or may not reflect reality.

[eclipse-ocl-bot]

By EPP Error Reports on Nov 05, 2014 11:47

I've looked up the (to date) top-3 most similar bug groups and listed the \ closest bug of each group below. This report may or may not be duplicate of\ those (low or similar scores for all entries may indicate that this hasn't\ been reported yet):

1. [Bug 447273](https://bugs.eclipse.org/bugs/show_bug.cgi?id=447273): [platform] Unhandled event loop exception during blocked modal context. – 0,9    
2. [Bug 449421](https://bugs.eclipse.org/bugs/show_bug.cgi?id=449421): [egit] Cannot read commit AnyObjectId[1ab57e6e78aff7a2990c4b6e50783bb54bf2ffea] – 0,6    
3. [Bug 444768](https://bugs.eclipse.org/bugs/show_bug.cgi?id=444768): Unhandled event loop exception (err_grp: 509fe763) – 0,5    

If this report actually is a duplicate of those, please mark it as such. This\ information helps me to improve the recommendations further for the next issue.

Thank you for your assistance.\ Your friendly error-reports-inbox.

[eclipse-ocl-bot]

By Ed Willink on Nov 05, 2014 12:08

This is a new bug.

At its heart is:

caused by: java.lang.NullPointerException: null\ at org.eclipse.emf.ecore.impl.BasicEObjectImpl.eSettingDelegate(BasicEObjectImpl.java:1561)

But there is insufficient information to tell why a setting delegate could not be found.

Probable cause is inadequate Pivot OCL initialization.

Possible remedy is more tolerant handling of unexpected org.eclipse.emf.edit.provider.ItemProviderAdapter.getValue returns in org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider.hasChildren.

[eclipse-ocl-bot]

By Ed Willink on Nov 05, 2014 12:11

Bug 450178 has been marked as a duplicate of this bug.

[eclipse-ocl-bot]

By Marcel Bruch on Nov 05, 2014 13:07

Ed,

adding "needinfo" keyword to notify the next reporter (from M3 on) by a popup window that further information is requested. Otherwise its only displayed in the progress view (and by a tiny icon in the lower right tool control).

[eclipse-ocl-bot]

By Marcel Bruch on Jun 18, 2015 03:31

Moving to OCL to continue tracking in the relevant projects. Please close if these problems are not relevant anymore.

[eclipse-ocl-bot]

By Ed Willink on Jun 18, 2015 04:13

(In reply to Ed Willink from comment #2)

Probable cause is inadequate Pivot OCL initialization.

Code has been revised for Mars and now supports the missing case of an initialized transiwent.

Reopen if reoccurs for Mars.