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Apache Commons VFS is a Virtual File System library.
There is a newer version: 2.9.0
/*
 * 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.provider.ram;

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;

import org.apache.commons.vfs2.Capability;
import org.apache.commons.vfs2.FileName;
import org.apache.commons.vfs2.FileSystem;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileSystemOptions;
import org.apache.commons.vfs2.provider.AbstractOriginatingFileProvider;

/**
 * RAM File Provider.
 */
public class RamFileProvider extends AbstractOriginatingFileProvider {
    /** The provider's capabilities. */
    public static final Collection capabilities = Collections.unmodifiableCollection(
            Arrays.asList(new Capability[] { Capability.CREATE, Capability.DELETE, Capability.RENAME,
                    Capability.GET_TYPE, Capability.GET_LAST_MODIFIED, Capability.SET_LAST_MODIFIED_FILE,
                    Capability.SET_LAST_MODIFIED_FOLDER, Capability.LIST_CHILDREN, Capability.READ_CONTENT,
                    Capability.URI, Capability.WRITE_CONTENT, Capability.APPEND_CONTENT, Capability.RANDOM_ACCESS_READ,
                    Capability.RANDOM_ACCESS_SET_LENGTH, Capability.RANDOM_ACCESS_WRITE }));

    /**
     * Constructs a new provider.
     */
    public RamFileProvider() {
        super();
    }

    /*
     * (non-Javadoc)
     *
     * @see org.apache.commons.vfs2.provider.AbstractOriginatingFileProvider#doCreateFileSystem(
     * org.apache.commons.vfs2.FileName, org.apache.commons.vfs2.FileSystemOptions)
     */
    @Override
    protected FileSystem doCreateFileSystem(final FileName name, final FileSystemOptions fileSystemOptions)
            throws FileSystemException {
        return new RamFileSystem(name, fileSystemOptions);
    }

    /*
     * (non-Javadoc)
     *
     * @see org.apache.commons.vfs2.provider.FileProvider#getCapabilities()
     */
    @Override
    public Collection getCapabilities() {
        return capabilities;
    }
}