[structure view] Eclipse WIP version throws exception

[martinlippert]

The Eclipse version of the structure view is still WIP, but I saw this exception happening:

java.lang.NullPointerException: Cannot invoke "String.equals(Object)" because the return value of "org.springframework.tooling.boot.ls.views.StereotypeNode.id()" is null
	at org.springframework.tooling.boot.ls.views.StereotypeNode.equals(StereotypeNode.java:28)
	at org.eclipse.jface.viewers.StructuredViewer.equals(StructuredViewer.java:664)
	at org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(AbstractTreeViewer.java:3123)
	at org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.java:796)
	at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:893)
	at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:870)
	at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:611)
	at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:817)
	at org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpand(AbstractTreeViewer.java:1599)
	at org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeViewer.java:904)
	at org.eclipse.jface.viewers.AbstractTreeViewer$3.treeExpanded(AbstractTreeViewer.java:1611)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:170)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:91)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4660)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1657)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1680)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1665)
	at org.eclipse.swt.widgets.TreeItem.sendExpand(TreeItem.java:1029)
	at org.eclipse.swt.widgets.Tree.expandItem_expandChildren(Tree.java:1323)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:6701)
	at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
	at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:239)
	at org.eclipse.swt.widgets.Widget.mouseDownSuper(Widget.java:1216)
	at org.eclipse.swt.widgets.Tree.mouseDownSuper(Tree.java:2190)
	at org.eclipse.swt.widgets.Widget.mouseDown(Widget.java:1208)
	at org.eclipse.swt.widgets.Control.mouseDown(Control.java:2598)
	at org.eclipse.swt.widgets.Tree.mouseDown(Tree.java:2157)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:6286)
	at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
	at org.eclipse.swt.widgets.Widget.callSuper(Widget.java:239)
	at org.eclipse.swt.widgets.Widget.windowSendEvent(Widget.java:2407)
	at org.eclipse.swt.widgets.Shell.windowSendEvent(Shell.java:2502)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:6402)
	at org.eclipse.swt.internal.cocoa.OS.objc_msgSendSuper(Native Method)
	at org.eclipse.swt.widgets.Display.applicationSendEvent(Display.java:5705)
	at org.eclipse.swt.widgets.Display.applicationProc(Display.java:5845)
	at org.eclipse.swt.internal.cocoa.OS.objc_msgSend(Native Method)
	at org.eclipse.swt.internal.cocoa.NSApplication.sendEvent(NSApplication.java:117)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4000)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:153)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:678)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:583)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:185)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:219)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:149)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:115)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:467)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:298)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
	at java.base/java.lang.reflect.Method.invoke(Method.java:580)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:627)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:575)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1431)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1403)

I have a workspace with a single project (Rest Service guide complete example), selected just two groups (JPA und Spring Web). After that, the exception is being thrown every time I select a concrete request mapping node (one that looks like the symbol).

[martinlippert]

The tree looks like this:

Clicking on the first mapping node (under Request Mappings stereotype, everything works. Clicking on the second mapping node (right unter GreetingController), the exception is being thrown.

[martinlippert]

The same problem seems to appear when clicking on a bean node that appears under a concrete configuration class node.

[BoykoAlex]

Hmm... I'm not seeing anything under the GreetingController

Perhaps you have something not pushed on the server side?

[martinlippert]

Can't reproduce this anymore, so closing this for now. In case I come across something like this again, I will re-open.