Bug 44308 NullPointerException when searching jars
I did a java search (ctrl-h) for references to "String". The search failed with this exception in the log: at org.eclipse.jdt.internal.ui.search.JavaSearchResultCollector.accept(JavaSearchResultCollector.java:121) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.report(MatchLocator.java:921) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.report(MatchLocator.java:914) at org.eclipse.jdt.internal.core.search.matching.PatternLocator.matchReportReference(PatternLocator.java:195) at org.eclipse.jdt.internal.core.search.matching.TypeReferenceLocator.matchReportReference(TypeReferenceLocator.java:178) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.reportMatching(MatchLocator.java:1122) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.reportMatching(MatchLocator.java:1297) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.reportMatching(MatchLocator.java:1308) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.reportMatching(MatchLocator.java:1183) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.process(MatchLocator.java:855) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:588) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:625) at org.eclipse.jdt.internal.core.search.matching.MatchLocator.locateMatches(MatchLocator.java:712) at org.eclipse.jdt.core.search.SearchEngine.search(SearchEngine.java:568) at org.eclipse.jdt.internal.ui.search.JavaSearchOperation.execute(JavaSearchOperation.java:98) at org.eclipse.ui.actions.WorkspaceModifyOperation$1.run(WorkspaceModifyOperation.java:71) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1555) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1572) at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:85) at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:101) There are two things wrong here: 1) We should make sure that we handle null "enclosingElements" in our search result acceptor (at least not NPE). The API clearly says we have to handle the case. 2) I haven't seen this behaviour from the java model before. What's the change, and why. Note that the reference that's being reported is in the package declaration of a binary type (in an external jar).
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/search/JavaSearchResultCollector.java
/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.ui.search;
import java.text.MessageFormat;
import java.util.HashMap;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;