Cannot invoke "org.eclipse.pde.core.plugin.ModelEntry.getWorkspaceModels()" because "swtEntries" is null

[fbertini]

Hello everyone,

I have installed the latest Eclipse IDE version (today it is eclipse-jee-2022-06-R-win32-x86_64.zip) and I always get the following error hovering the mouse on the RUN/debug button on the toolbar.

Cannot invoke "org.eclipse.pde.core.plugin.ModelEntry.getWorkspaceModels()" because "swtEntries" is null

Notice that this is happening only when I am working on a JUnit4 class.

PDE Version 4.24

References: Eclipse Bugzilla

[iloveeclipse]

@fbertini : please attach here Eclipse error log (you can find it under ./metadata/.log).

[fbertini]

Please find attached log file as requested.
log.zip

Thank you!

[iloveeclipse]

!ENTRY org.eclipse.core.jobs 4 2 2022-07-27 08:27:29.045
!MESSAGE An internal error occurred during: "Compute launch button tooltip".
!STACK 0
java.lang.NullPointerException: Cannot invoke "org.eclipse.pde.core.plugin.ModelEntry.getWorkspaceModels()" because "swtEntries" is null
	at org.eclipse.pde.internal.launching.launcher.LauncherUtils.requiresUI(LauncherUtils.java:331)
	at org.eclipse.pde.ui.launcher.JUnitWorkbenchLaunchShortcut.createLaunchConfiguration(JUnitWorkbenchLaunchShortcut.java:59)
	at org.eclipse.jdt.junit.launcher.JUnitLaunchShortcut.findExistingLaunchConfigurations(JUnitLaunchShortcut.java:590)
	at org.eclipse.jdt.junit.launcher.JUnitLaunchShortcut.getLaunchConfigurations(JUnitLaunchShortcut.java:558)
	at org.eclipse.debug.internal.ui.launchConfigurations.LaunchShortcutExtension.getLaunchConfigurations(LaunchShortcutExtension.java:496)
	at org.eclipse.debug.internal.ui.contextlaunching.LaunchingResourceManager.getParticipatingLaunchConfigurations(LaunchingResourceManager.java:489)
	at org.eclipse.debug.internal.ui.contextlaunching.LaunchingResourceManager.getLabel(LaunchingResourceManager.java:326)
	at org.eclipse.debug.internal.ui.contextlaunching.LaunchingResourceManager.computeLabels(LaunchingResourceManager.java:246)
	at org.eclipse.debug.internal.ui.contextlaunching.LaunchingResourceManager$1$1.run(LaunchingResourceManager.java:144)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63)

[iloveeclipse]

@HannesWell : looks like regression from commit d0a6e0f / #110

[HannesWell]

Thanks for the report.
Andrey you are right, I forgot to handle the null Case.

I can fix this in two weeks when back from vacation (only have my phone available).

If any of you want to fix it earlier, it should be sufficient to pull up
ModelEntry swtEntries = PluginRegistry.findEntry("org.eclipse.swt"); //$NON-NLS-1$ as first expression in the if-block and to return false if it is null. I can review it.

[iloveeclipse]

Thanks Hannes, see #240

[fbertini]

Hello guys, I received the update to m2e PDE - Maven Integration for Eclipse Plugin Development version 1.17.
Was this fix supposed to be included into this version? Or is it something to be released in a new release higher than 4.24?

[HannesWell]

The version of Eclipse you mentioned should include version 1.20 of m2e PDE, which is more recent than 1.17.

Nevertheless this fix in Eclipse PDE (which is referenced by M2E-PDE) will be relesed with Eclipse 2022-09 or 4.25 in September.

[vogella]

i-build (daily build) can be found here: https://download.eclipse.org/eclipse/downloads/