| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.jdo.tck.util; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * This class extends java.lang.ThreadGroup and stores any uncaught |
| * exception of threads from this ThreadGroup for later retrieval. |
| * |
| * @author Michael Bouschen |
| */ |
| public class ThreadExceptionHandler extends ThreadGroup |
| { |
| /** |
| * Map of uncaught exceptions. The thread is the key and the uncaught |
| * Throwable is the value in the map. |
| */ |
| private final Map uncaughtExceptions = new HashMap(); |
| |
| /** Constructor. */ |
| public ThreadExceptionHandler() { |
| super("ThreadExceptionHandler"); |
| } |
| |
| /** Called by the Java Virtual Machine when a thread in this thread |
| * group stops because of an uncaught exception. This implementation |
| * stores the uncaught exception in a map for later retrieval. |
| */ |
| public void uncaughtException(Thread t, Throwable e) { |
| uncaughtExceptions.put(t, e); |
| } |
| |
| /** Returns an uncaught exception for the specified thread. */ |
| public Throwable getUncaughtException(Thread t) { |
| return (Throwable)uncaughtExceptions.get(t); |
| } |
| |
| /** |
| * Returns all uncaught exceptions stored in this ThreadGroup. |
| * Each element in the returned set is a Map.Entry with the |
| * thread as the key and the uncaught Throwable is the value. |
| */ |
| public Set getAllUncaughtExceptions() { |
| return uncaughtExceptions.entrySet(); |
| } |
| |
| /** |
| * Clears all exceptions in this ThreadGroup. |
| */ |
| public void clear() { |
| uncaughtExceptions.clear(); |
| } |
| } |