001/*
002 * Copyright 2006-2008 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.springframework.batch.core.step.item;
017
018import java.util.List;
019
020import org.apache.commons.logging.Log;
021import org.apache.commons.logging.LogFactory;
022import org.springframework.batch.core.listener.ItemListenerSupport;
023
024/**
025 * Default implementation of the {@link ItemListenerSupport} class that
026 * writes all exceptions via commons logging. Since generics can't be used to
027 * ensure the list contains exceptions, any non exceptions will be logged out by
028 * calling toString on the object.
029 * 
030 * @author Lucas Ward
031 * 
032 */
033public class DefaultItemFailureHandler extends ItemListenerSupport<Object,Object> {
034
035        protected static final Log logger = LogFactory
036                        .getLog(DefaultItemFailureHandler.class);
037
038        @Override
039        public void onReadError(Exception ex) {
040                try {
041                        logger.error("Error encountered while reading", ex);
042                } catch (Exception exception) {
043                        logger.error("Invalid type for logging: [" + exception.toString()
044                                        + "]");
045                }
046        }
047
048        @Override
049        public void onWriteError(Exception ex, List<? extends Object> item) {
050                try {
051                        logger.error("Error encountered while writing item: [ " + item + "]", ex);
052                } catch (Exception exception) {
053                        logger.error("Invalid type for logging: [" + exception.toString()
054                                        + "]");
055                }
056        }
057
058}