001/* 002 * Licensed to the Apache Software Foundation (ASF) under one or more 003 * contributor license agreements. See the NOTICE file distributed with 004 * this work for additional information regarding copyright ownership. 005 * The ASF licenses this file to You under the Apache License, Version 2.0 006 * (the "License"); you may not use this file except in compliance with 007 * the License. You may obtain a copy of the License at 008 * 009 * http://www.apache.org/licenses/LICENSE-2.0 010 * 011 * Unless required by applicable law or agreed to in writing, software 012 * distributed under the License is distributed on an "AS IS" BASIS, 013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 014 * See the License for the specific language governing permissions and 015 * limitations under the License. 016 */ 017package org.apache.commons.io.input; 018 019/** 020 * {@link TailerListener} Adapter. 021 * 022 * @since 2.0 023 */ 024public class TailerListenerAdapter implements TailerListener { 025 026 /** 027 * Constructs a new instance. 028 */ 029 public TailerListenerAdapter() { 030 // empty 031 } 032 033 /** 034 * Called each time the Tailer reaches the end of the file. 035 * 036 * <strong>Note:</strong> this is called from the tailer thread. 037 * 038 * Note: a future version of commons-io will pull this method up to the TailerListener interface, 039 * for now clients must subclass this class to use this feature. 040 * 041 * @since 2.5 042 */ 043 public void endOfFileReached() { 044 // noop 045 } 046 047 /** 048 * This method is called if the tailed file is not found. 049 */ 050 @Override 051 public void fileNotFound() { 052 // noop 053 } 054 055 /** 056 * Called if a file rotation is detected. 057 * 058 * This method is called before the file is reopened, and fileNotFound may 059 * be called if the new file has not yet been created. 060 */ 061 @Override 062 public void fileRotated() { 063 // noop 064 } 065 066 /** 067 * Handles an Exception. 068 * 069 * @param ex the exception. 070 */ 071 @Override 072 public void handle(final Exception ex) { 073 // noop 074 } 075 076 /** 077 * Handles a line from a Tailer. 078 * 079 * @param line the line. 080 */ 081 @Override 082 public void handle(final String line) { 083 // noop 084 } 085 086 /** 087 * The tailer will call this method during construction, 088 * giving the listener a method of stopping the tailer. 089 * 090 * @param tailer the tailer. 091 */ 092 @Override 093 public void init(final Tailer tailer) { 094 // noop 095 } 096}