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Commons IO example source code file (DelegateFileFilter.java)
The Commons IO DelegateFileFilter.java source code/* * 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.io.filefilter; import java.io.File; import java.io.FileFilter; import java.io.FilenameFilter; import java.io.Serializable; /** * This class turns a Java FileFilter or FilenameFilter into an IO FileFilter. * * @since Commons IO 1.0 * @version $Revision: 1005099 $ $Date: 2010-10-06 17:13:01 +0100 (Wed, 06 Oct 2010) $ * * @author Stephen Colebourne * @see FileFilterUtils#asFileFilter(FileFilter) * @see FileFilterUtils#asFileFilter(FilenameFilter) */ public class DelegateFileFilter extends AbstractFileFilter implements Serializable { /** The Filename filter */ private final FilenameFilter filenameFilter; /** The File filter */ private final FileFilter fileFilter; /** * Constructs a delegate file filter around an existing FilenameFilter. * * @param filter the filter to decorate */ public DelegateFileFilter(FilenameFilter filter) { if (filter == null) { throw new IllegalArgumentException("The FilenameFilter must not be null"); } this.filenameFilter = filter; this.fileFilter = null; } /** * Constructs a delegate file filter around an existing FileFilter. * * @param filter the filter to decorate */ public DelegateFileFilter(FileFilter filter) { if (filter == null) { throw new IllegalArgumentException("The FileFilter must not be null"); } this.fileFilter = filter; this.filenameFilter = null; } /** * Checks the filter. * * @param file the file to check * @return true if the filter matches */ @Override public boolean accept(File file) { if (fileFilter != null) { return fileFilter.accept(file); } else { return super.accept(file); } } /** * Checks the filter. * * @param dir the directory * @param name the filename in the directory * @return true if the filter matches */ @Override public boolean accept(File dir, String name) { if (filenameFilter != null) { return filenameFilter.accept(dir, name); } else { return super.accept(dir, name); } } /** * Provide a String representaion of this file filter. * * @return a String representaion */ @Override public String toString() { String delegate = (fileFilter != null ? fileFilter.toString() : filenameFilter.toString()); return super.toString() + "(" + delegate + ")"; } } Other Commons IO examples (source code examples)Here is a short list of links related to this Commons IO DelegateFileFilter.java source code file: |
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