/*
 * 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.
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package org.apache.commons.vfs2.provider;

import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileSystemOptions;
import org.apache.commons.vfs2.VFS;

Description.
/** * Description. */
public abstract class CompositeFileProvider extends AbstractFileProvider { private static final int INITIAL_BUFSZ = 80; public CompositeFileProvider() { super(); }
The schemes known.
Returns:Array of supported schemes.
/** * The schemes known. * * @return Array of supported schemes. */
protected abstract String[] getSchemes();
Locates a file object, by absolute URI.
Params:
  • baseFile – The base FileObject.
  • uri – The file to find.
  • fileSystemOptions – The options for the FileSystem.
Throws:
Returns:A FileObject for the located file.
/** * Locates a file object, by absolute URI. * * @param baseFile The base FileObject. * @param uri The file to find. * @param fileSystemOptions The options for the FileSystem. * @return A FileObject for the located file. * @throws FileSystemException if an error occurs. */
@Override public FileObject findFile(final FileObject baseFile, final String uri, final FileSystemOptions fileSystemOptions) throws FileSystemException { final StringBuilder buf = new StringBuilder(INITIAL_BUFSZ); UriParser.extractScheme(VFS.getManager().getSchemes(), uri, buf); final String[] schemes = getSchemes(); for (final String scheme : schemes) { buf.insert(0, ":"); buf.insert(0, scheme); } final FileObject fo = getContext().getFileSystemManager().resolveFile(buf.toString(), fileSystemOptions); return fo; } }