org.apache.sshd.common.file.nonefs.NoneFileSystemProvider Maven / Gradle / Ivy

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

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/*
 * 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.sshd.common.file.nonefs;

import java.io.IOException;
import java.net.URI;
import java.nio.channels.SeekableByteChannel;
import java.nio.file.AccessMode;
import java.nio.file.CopyOption;
import java.nio.file.DirectoryStream;
import java.nio.file.DirectoryStream.Filter;
import java.nio.file.FileStore;
import java.nio.file.FileSystem;
import java.nio.file.LinkOption;
import java.nio.file.NoSuchFileException;
import java.nio.file.OpenOption;
import java.nio.file.Path;
import java.nio.file.attribute.BasicFileAttributes;
import java.nio.file.attribute.FileAttribute;
import java.nio.file.attribute.FileAttributeView;
import java.nio.file.spi.FileSystemProvider;
import java.util.Map;
import java.util.Objects;
import java.util.Set;

/**
 * Provides an "empty" {@link FileSystemProvider} that has no files of any type.
 *
 * @author Apache MINA SSHD Project
 */
public class NoneFileSystemProvider extends FileSystemProvider {
    public static final String SCHEME = "none";

    public static final NoneFileSystemProvider INSTANCE = new NoneFileSystemProvider();

    public NoneFileSystemProvider() {
        super();
    }

    @Override
    public String getScheme() {
        return SCHEME;
    }

    @Override
    public FileSystem newFileSystem(URI uri, Map env) throws IOException {
        return getFileSystem(uri);
    }

    @Override
    public FileSystem getFileSystem(URI uri) {
        if (!Objects.equals(getScheme(), uri.getScheme())) {
            throw new IllegalArgumentException("Mismatched FS scheme");
        }

        return NoneFileSystem.INSTANCE;
    }

    @Override
    public Path getPath(URI uri) {
        if (!Objects.equals(getScheme(), uri.getScheme())) {
            throw new IllegalArgumentException("Mismatched FS scheme");
        }

        throw new UnsupportedOperationException("No paths available");
    }

    @Override
    public SeekableByteChannel newByteChannel(Path path, Set options, FileAttribute... attrs)
            throws IOException {
        throw new NoSuchFileException(path.toString());
    }

    @Override
    public DirectoryStream newDirectoryStream(Path dir, Filter filter) throws IOException {
        throw new NoSuchFileException(dir.toString());
    }

    @Override
    public void createDirectory(Path dir, FileAttribute... attrs) throws IOException {
        throw new NoSuchFileException(dir.toString());
    }

    @Override
    public void delete(Path path) throws IOException {
        throw new NoSuchFileException(path.toString());
    }

    @Override
    public void copy(Path source, Path target, CopyOption... options) throws IOException {
        throw new NoSuchFileException(source.toString(), target.toString(), "N/A");

    }

    @Override
    public void move(Path source, Path target, CopyOption... options) throws IOException {
        throw new NoSuchFileException(source.toString(), target.toString(), "N/A");
    }

    @Override
    public boolean isSameFile(Path path1, Path path2) throws IOException {
        throw new NoSuchFileException(path1.toString(), path2.toString(), "N/A");
    }

    @Override
    public boolean isHidden(Path path) throws IOException {
        throw new NoSuchFileException(path.toString());
    }

    @Override
    public FileStore getFileStore(Path path) throws IOException {
        throw new NoSuchFileException(path.toString());
    }

    @Override
    public void checkAccess(Path path, AccessMode... modes) throws IOException {
        throw new NoSuchFileException(path.toString());
    }

    @Override
    public  V getFileAttributeView(Path path, Class type, LinkOption... options) {
        return null;
    }

    @Override
    public  A readAttributes(Path path, Class type, LinkOption... options)
            throws IOException {
        throw new NoSuchFileException(path.toString());
    }

    @Override
    public Map readAttributes(Path path, String attributes, LinkOption... options) throws IOException {
        throw new NoSuchFileException(path.toString());
    }

    @Override
    public void setAttribute(Path path, String attribute, Object value, LinkOption... options) throws IOException {
        throw new NoSuchFileException(path.toString());
    }
}

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