org.apache.commons.jci.monitor.FilesystemAlterationObserver.java Source code

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/*
 * 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.commons.jci.monitor;

import java.io.File;

/**
 * FilesystemAlterationObserver represents the state of files
 * below a certain root directory. It implements the code to
 * check the filesystem and notify listeners.
 * 
 * @author tcurdt
 */
public interface FilesystemAlterationObserver {

    File getRootDirectory();

    void checkAndNotify();

    void addListener(final FilesystemAlterationListener pListener);

    void removeListener(final FilesystemAlterationListener pListener);

    FilesystemAlterationListener[] getListeners();

}