| /* |
| * 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.vfs2.filter; |
| |
| import java.io.Serializable; |
| |
| import org.apache.commons.vfs2.FileFilter; |
| import org.apache.commons.vfs2.FileSelectInfo; |
| import org.apache.commons.vfs2.FileSystemException; |
| |
| /** |
| * This filter produces a logical NOT of the filters specified. |
| * |
| * @author This code was originally ported from Apache Commons IO File Filter |
| * @see "http://commons.apache.org/proper/commons-io/" |
| * @since 2.4 |
| */ |
| public class NotFileFilter implements FileFilter, Serializable { |
| |
| private static final long serialVersionUID = 1L; |
| |
| /** The filter. */ |
| private final FileFilter filter; |
| |
| /** |
| * Constructs a new file filter that NOTs the result of another filter. |
| * |
| * @param filter the filter, must not be null |
| */ |
| public NotFileFilter(final FileFilter filter) { |
| if (filter == null) { |
| throw new IllegalArgumentException("The filter must not be null"); |
| } |
| this.filter = filter; |
| } |
| |
| /** |
| * Returns the logical NOT of the underlying filter's return value for the same |
| * File. |
| * |
| * @param fileInfo the File to check |
| * |
| * @return {@code true} if the filter returns {@code false} |
| * @throws FileSystemException Thrown for file system errors. |
| */ |
| @Override |
| public boolean accept(final FileSelectInfo fileInfo) throws FileSystemException { |
| return !filter.accept(fileInfo); |
| } |
| |
| /** |
| * Provide a String representation of this file filter. |
| * |
| * @return a String representation |
| */ |
| @Override |
| public String toString() { |
| return super.toString() + "(" + filter.toString() + ")"; |
| } |
| |
| } |