| /* |
| * 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.cache; |
| |
| import org.apache.commons.vfs2.FileName; |
| import org.apache.commons.vfs2.FileObject; |
| import org.apache.commons.vfs2.FileSystem; |
| |
| /** |
| * A {@link org.apache.commons.vfs2.FilesCache} implementation. |
| * <p> |
| * This implementation never ever caches a single file. |
| * </p> |
| * <p> |
| * <b>Notice</b>: if you use resolveFile(uri) multiple times with the same path, the system will always create a new |
| * instance. Changes on one instance of this file are not seen by the others. |
| * </p> |
| */ |
| public class NullFilesCache extends AbstractFilesCache { |
| |
| @Override |
| public void putFile(final FileObject file) { |
| // empty |
| } |
| |
| @Override |
| public boolean putFileIfAbsent(final FileObject file) { |
| return false; |
| } |
| |
| @Override |
| public FileObject getFile(final FileSystem filesystem, final FileName name) { |
| return null; |
| } |
| |
| @Override |
| public void clear(final FileSystem filesystem) { |
| // empty |
| } |
| |
| @Override |
| public void removeFile(final FileSystem filesystem, final FileName name) { |
| // empty |
| } |
| } |