001 /* 002 * Copyright 2013 Erik Kuefler 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except 005 * in compliance with the License. You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software distributed under the License 010 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express 011 * or implied. See the License for the specific language governing permissions and limitations under 012 * the License. 013 */ 014 package com.ekuefler.supereventbus; 015 016 /** 017 * Marks an object as capable of handling exceptions thrown while dispatching events posted on the 018 * event bus. After all handlers have had a chance to handle an event, any exceptions thrown by 019 * handlers are collected, wrapped in an {@link EventBusException}, and passed in turn to all 020 * registered exception handlers. 021 * 022 * @author ekuefler@gmail.com (Erik Kuefler) 023 */ 024 public interface ExceptionHandler { 025 /** 026 * Invoked whenever an exception occurs while handling an event, after all handlers have had a 027 * chance to handle the event. The underlying exception will be wrapped in an 028 * {@link EventBusException}, which provides access to the handler and event for which the 029 * exception occurred. If multiple exceptions occurred while dispatching an event, this method 030 * will be invoked multiple times. 031 * 032 * @param e a wrapper around the exception that occurred during event dispatch 033 */ 034 void handleException(EventBusException e); 035 }