[jbosstools-issues] [JBoss JIRA] (JBIDE-23758) Avoid caught NPE in wst StopAction by providing an empty list instead of null

Avoid caught NPE in wst StopAction by providing an empty list instead of null ----------------------------------------------------------------------------- Key: JBIDE-23758 URL: https://issues.jboss.org/browse/JBIDE-23758 Project: Tools (JBoss Tools) Issue Type: Bug Components: server Affects Versions: 4.4.2.Final Reporter: Aurélien Pupier Assignee: Rob Stryker Fix For: 4.4.3.AM2 when starting JBDS, there is a silent caught NPE in AsbtractServerAction.selectionChanged because org.jboss.ide.eclipse.as.ui.actions.AbstractServerActionDelegate$4 is returning null instead of an empty selection {noformat} Thread [main] (Suspended (exception NullPointerException)) owns: RunnableLock (id=138) StopAction(AbstractServerAction).selectionChanged(IStructuredSelection) line: 75 StopAction.<init>(Shell, ISelectionProvider) line: 36 StopServerActionDelegate.init(IWorkbenchWindow) line: 24 WWinPluginAction.initDelegate() line: 187 WWinPluginAction(PluginAction).createDelegate() line: 125 WWinPluginAction.refreshActionList() line: 167 AbstractUIPlugin$1.run() line: 482 RunnableLock.run() line: 35 UISynchronizer(Synchronizer).runAsyncMessages(boolean) line: 182 Display.runAsyncMessages(boolean) line: 4203 Display.readAndDispatch() line: 3819 PartRenderingEngine$4.run() line: 1121 Realm.runWithDefault(Realm, Runnable) line: 336 PartRenderingEngine.run(MApplicationElement, IEclipseContext) line: 1022 E4Workbench.createAndRunUI(MApplicationElement) line: 150 Workbench$5.run() line: 687 Realm.runWithDefault(Realm, Runnable) line: 336 Workbench.createAndRunWorkbench(Display, WorkbenchAdvisor) line: 604 PlatformUI.createAndRunWorkbench(Display, WorkbenchAdvisor) line: 148 IDEApplication.start(IApplicationContext) line: 138 EclipseAppHandle.run(Object) line: 196 EclipseAppLauncher.runApplication(Object) line: 134 EclipseAppLauncher.start(Object) line: 104 EclipseStarter.run(Object) line: 388 EclipseStarter.run(String[], Runnable) line: 243 NativeMethodAccessorImpl.invoke0(Method, Object, Object[]) line: not available [native method] NativeMethodAccessorImpl.invoke(Object, Object[]) line: 62 DelegatingMethodAccessorImpl.invoke(Object, Object[]) line: 43 Method.invoke(Object, Object...) line: 498 Main.invokeFramework(String[], URL[]) line: 673 Main.basicRun(String[]) line: 610 Main.run(String[]) line: 1519 Main.main(String[]) line: 1492 {noformat}