/*
* 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 accepts File
s that are symbolic links.
Example, showing how to print out a list of the current directory's
symbolic link files:
FileSystemManager fsManager = VFS.getManager();
FileObject dir = fsManager.toFileObject(new File("."));
FileObject[] files = dir.findFiles(new FileFilterSelector(SymbolicLinkFileFilter.SYMBOLIC));
for (int i = 0; i < files.length; i++) {
System.out.println(files[i]);
}
Example, showing how to print out a list of the current directory's
actual (i.e. symbolic link) files:
FileSystemManager fsManager = VFS.getManager();
FileObject dir = fsManager.toFileObject(new File("."));
FileObject[] files = dir.findFiles(new FileFilterSelector(SymbolicLinkFileFilter.ACTUAL));
for (int i = 0; i < files.length; i++) {
System.out.println(files[i]);
}
Since: 2.4
/**
* This filter accepts <code>File</code>s that are symbolic links.
* <p>
* Example, showing how to print out a list of the current directory's
* <i>symbolic link</i> files:
* </p>
*
* <pre>
* FileSystemManager fsManager = VFS.getManager();
* FileObject dir = fsManager.toFileObject(new File("."));
* FileObject[] files = dir.findFiles(new FileFilterSelector(SymbolicLinkFileFilter.SYMBOLIC));
* for (int i = 0; i < files.length; i++) {
* System.out.println(files[i]);
* }
* </pre>
*
* <p>
* Example, showing how to print out a list of the current directory's
* <i>actual</i> (i.e. symbolic link) files:
* </p>
*
* <pre>
* FileSystemManager fsManager = VFS.getManager();
* FileObject dir = fsManager.toFileObject(new File("."));
* FileObject[] files = dir.findFiles(new FileFilterSelector(SymbolicLinkFileFilter.ACTUAL));
* for (int i = 0; i < files.length; i++) {
* System.out.println(files[i]);
* }
* </pre>
*
* @since 2.4
*/
public class SymbolicLinkFileFilter implements FileFilter, Serializable {
private static final long serialVersionUID = 1L;
Singleton instance of hidden filter. /** Singleton instance of <i>hidden</i> filter. */
public static final FileFilter SYMBOLIC = new SymbolicLinkFileFilter();
Singleton instance of visible filter. /** Singleton instance of <i>visible</i> filter. */
public static final FileFilter ACTUAL = new NotFileFilter(SYMBOLIC);
Restrictive constructor.
/**
* Restrictive constructor.
*/
protected SymbolicLinkFileFilter() {
}
Checks to see if the file is a symbolic link. Non existing files won't be accepted.
Params: - fileInfo – the file to check
Throws: - FileSystemException – Thrown for file system errors.
Returns: true
if the file is symbolic link, otherwise false
.
/**
* Checks to see if the file is a symbolic link. Non existing files won't be accepted.
*
* @param fileInfo the file to check
*
* @return {@code true} if the file is <i>symbolic link</i>, otherwise {@code false}.
* @throws FileSystemException Thrown for file system errors.
*/
@Override
public boolean accept(final FileSelectInfo fileInfo) throws FileSystemException {
if (!fileInfo.getFile().exists()) {
return false;
}
return fileInfo.getFile().isSymbolicLink();
}
}