Description Stefan Fussenegger 2023-02-27 06:01:51 EST

1) Created a (custom) project
2) Project is containing a virtual Folder and file
3) Choose in Context menu: Teams->Share Project...
4) Chose git
5) Create a local repo
6) Click finish

The project has a folder {MyProject}/.internal which is a Virtual IRessources which is derived.

In org.eclipse.egit.core.op.ConnectProviderOperation.connectProject() the method autoIgnoreDerivedResources() is called which is parsing the project tree for derived folders and trying to get the path of it. It's for creating the .gitignore file. But for Virtual folders there is no path so the exception is thrown.

Could be solved by  ConnectProviderOperation.findDerivedResources() and add a check to skip virtual IRessources like:

private List<IPath> findDerivedResources(IContainer c)
			throws CoreException {
		List<IPath> derived = new ArrayList<IPath>();
		IResource[] members = c.members(IContainer.INCLUDE_HIDDEN);
		for (IResource r : members) {
			if (r.isDerived() && !r.isVirtual())
				derived.add(r.getLocation());
			else if (r instanceof IContainer && !r.isVirtual())
				derived.addAll(findDerivedResources((IContainer) r));
		}
		return derived;
	}


the thrown Exception:

java.lang.NullPointerException: undefined
     at org.eclipse.core.runtime.Path.isPrefixOf(Path.java:708)
     at org.eclipse.core.internal.localstore.FileSystemResourceManager.resourceForLocation(FileSystemResourceManager.java:307)
     at org.eclipse.core.internal.localstore.FileSystemResourceManager.fileForLocation(FileSystemResourceManager.java:487)
     at org.eclipse.core.internal.resources.WorkspaceRoot.getFileForLocation(WorkspaceRoot.java:115)
     at org.eclipse.egit.core.internal.util.ResourceUtil.getFileForLocation(ResourceUtil.java:128)
     at org.eclipse.egit.core.internal.util.ResourceUtil.getResourceForLocation(ResourceUtil.java:103)
     at org.eclipse.egit.core.internal.job.RuleUtil.getRuleForContainers(RuleUtil.java:108)
     at org.eclipse.egit.core.op.IgnoreOperation.calcSchedulingRule(IgnoreOperation.java:342)
     at org.eclipse.egit.core.op.IgnoreOperation.<init>(IgnoreOperation.java:76)
     at org.eclipse.egit.core.op.ConnectProviderOperation.autoIgnoreDerivedResources(ConnectProviderOperation.java:243)
     at org.eclipse.egit.core.op.ConnectProviderOperation.connectProject(ConnectProviderOperation.java:190)
     at org.eclipse.egit.core.op.ConnectProviderOperation.execute(ConnectProviderOperation.java:111)
     at org.eclipse.egit.ui.internal.sharing.SharingWizard$1.run(SharingWizard.java:133)
     at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:122)