| /* |
| * 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.impl; |
| |
| import org.apache.commons.vfs2.FileName; |
| import org.apache.commons.vfs2.FileObject; |
| import org.apache.commons.vfs2.FileSystem; |
| import org.apache.commons.vfs2.FileSystemException; |
| import org.apache.commons.vfs2.FileType; |
| import org.apache.commons.vfs2.provider.AbstractFileName; |
| import org.apache.commons.vfs2.provider.AbstractFileSystem; |
| import org.apache.commons.vfs2.provider.AbstractVfsContainer; |
| |
| |
| /** |
| * A virtual filesystem provider. |
| */ |
| public class VirtualFileProvider extends AbstractVfsContainer |
| { |
| /** |
| * Creates a virtual file system, with the supplied file as its root. |
| * |
| * @param rootFile The root of the file system. |
| * @return A FileObject in the FileSystem. |
| * @throws FileSystemException if an error occurs. |
| */ |
| public FileObject createFileSystem(final FileObject rootFile) throws FileSystemException |
| { |
| final AbstractFileName rootName = (AbstractFileName) |
| getContext().getFileSystemManager().resolveName(rootFile.getName(), FileName.ROOT_PATH); |
| final VirtualFileSystem fs = new VirtualFileSystem(rootName, rootFile.getFileSystem().getFileSystemOptions()); |
| addComponent(fs); |
| fs.addJunction(FileName.ROOT_PATH, rootFile); |
| return fs.getRoot(); |
| } |
| |
| /** |
| * Creates an empty virtual file system. |
| * |
| * @param rootUri The root of the file system. |
| * @return A FileObject in the FileSystem. |
| * @throws FileSystemException if an error occurs. |
| */ |
| public FileObject createFileSystem(final String rootUri) throws FileSystemException |
| { |
| final AbstractFileName rootName = |
| new VirtualFileName(rootUri, FileName.ROOT_PATH, FileType.FOLDER); |
| final VirtualFileSystem fs = new VirtualFileSystem(rootName, null); |
| addComponent(fs); |
| return fs.getRoot(); |
| } |
| |
| /** |
| * Close a VirtualFileSystem by removing it from the |
| * {@code #components} list of this provider. |
| * <p> |
| * This gets called from DefaultFileManager#_closeFileSystem. |
| * |
| * @param filesystem the file system remembered by this provider. |
| */ |
| void closeFileSystem(final FileSystem filesystem) |
| { |
| final AbstractFileSystem fs = (AbstractFileSystem) filesystem; |
| |
| removeComponent(fs); |
| fs.close(); |
| } |
| } |