    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     * The tailer will call this method during construction,
    028     * giving the listener a method of stopping the tailer.
    029     * @param tailer the tailer.
    030     */
    031    @Override
    032    public void init(final Tailer tailer) {
    033        // noop
    034    }
    035
    036    /**
    037     * This method is called if the tailed file is not found.
    038     */
    039    @Override
    040    public void fileNotFound() {
    041        // noop
    042    }
    043
    044    /**
    045     * Called if a file rotation is detected.
    046     *
    047     * This method is called before the file is reopened, and fileNotFound may
    048     * be called if the new file has not yet been created.
    049     */
    050    @Override
    051    public void fileRotated() {
    052        // noop
    053    }
    054
    055    /**
    056     * Handles a line from a Tailer.
    057     * @param line the line.
    058     */
    059    @Override
    060    public void handle(final String line) {
    061        // noop
    062    }
    063
    064    /**
    065     * Handles an Exception .
    066     * @param ex the exception.
    067     */
    068    @Override
    069    public void handle(final Exception ex) {
    070        // noop
    071    }
    072
    073    /**
    074     * Called each time the Tailer reaches the end of the file.
    075     *
    076     * <b>Note:</b> this is called from the tailer thread.
    077     *
    078     * Note: a future version of commons-io will pull this method up to the TailerListener interface,
    079     * for now clients must subclass this class to use this feature.
    080     *
    081     * @since 2.5
    082     */
    083    public void endOfFileReached() {
    084        // noop
    085    }
    086}