Error Log view is polluted with NullPointerExceptions when debugging JavaScript with ChromeDevTools --------------------------------------------------------------------------------------------------- Key: JBIDE-21067 URL: https://issues.jboss.org/browse/JBIDE-21067 Project: Tools (JBoss Tools) Issue Type: Bug Components: common/jst/core Affects Versions: 4.3.0.Final, 4.4.0.Alpha1 Reporter: Denis Golovin Assignee: Viacheslav Kabanovich Fix For: 4.3.1.Beta1, 4.4.0.Alpha1 When debugging JavaScript with ChromeDevTools for Java it creates special project inside current workspace and populate it with .js files using eclipse file system (EFS) API. IReource instance for .js file inside project returns null if requested for location through IResource.getLocation() method. null is valid return value according to JavaDoc for the method. Now JBossTools code fails with NullPointerException and pollutes Error Log View {code} java.lang.NullPointerException at org.jboss.tools.common.model.util.EclipseResourceUtil.createObjectForResource(EclipseResourceUtil.java:368) at org.jboss.tools.jst.web.ui.navigator.XContentProvider.hasChildren(XContentProvider.java:96) at org.eclipse.ui.internal.navigator.extensions.SafeDelegateTreeContentProvider.hasChildren(SafeDelegateTreeContentProvider.java:112) at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.callNormalHasChildren(NavigatorContentServiceContentProvider.java:444) at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.access$4(NavigatorContentServiceContentProvider.java:439) at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider$3.run(NavigatorContentServiceContentProvider.java:407) at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42) at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.hasChildren(NavigatorContentServiceContentProvider.java:392) at org.eclipse.ui.internal.navigator.NavigatorContentServiceContentProvider.hasChildren(NavigatorContentServiceContentProvider.java:436) at org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer.java:2124) at org.eclipse.jface.viewers.TreeViewer.isExpandable(TreeViewer.java:538) at org.eclipse.jface.viewers.AbstractTreeViewer.isExpandable(AbstractTreeViewer.java:2162) at org.eclipse.jface.viewers.AbstractTreeViewer.updatePlus(AbstractTreeViewer.java:2844) at org.eclipse.jface.viewers.TreeViewer.updatePlus(TreeViewer.java:786) at org.eclipse.jface.viewers.AbstractTreeViewer.createTreeItem(AbstractTreeViewer.java:840) at org.eclipse.jface.viewers.AbstractTreeViewer.lambda$0(AbstractTreeViewer.java:816) at org.eclipse.jface.viewers.AbstractTreeViewer$$Lambda$43/10378869.run(Unknown Source) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70) at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:791) at org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:596) at org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:762) at org.eclipse.jface.viewers.AbstractTreeViewer.handleTreeExpand(AbstractTreeViewer.java:1489) at org.eclipse.jface.viewers.TreeViewer.handleTreeExpand(TreeViewer.java:882){code}