/*
 * Copyright 2009 New Atlanta Communications, LLC
 *
 * Licensed 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 com.newatlanta.commons.vfs.provider.gae;

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

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

/**
 * Configures the {@link GaeFileNameParser} and creates {@link GaeFileSystem} instances.
 * This is an internal GaeVFS implementation class that is normally not referenced
 * directly, but only indirectly via the
 * <a href="http://commons.apache.org/vfs/apidocs/index.html" target="_blank">Apache
 * Commons VFS API</a>. See {@link GaeVFS} as the entry point for application
 * code that interacts with GaeVFS.
 *
 * @author <a href="mailto:vbonfanti@gmail.com">Vince Bonfanti</a>
 */
public class GaeFileProvider extends AbstractOriginatingFileProvider {

    public final static Collection<Capability> capabilities = Collections.unmodifiableCollection( Arrays.asList(
            Capability.APPEND_CONTENT,
            Capability.CREATE,
            Capability.DELETE,
            Capability.GET_LAST_MODIFIED,
            Capability.GET_TYPE,
            Capability.LAST_MODIFIED,
            Capability.LIST_CHILDREN,
            Capability.RANDOM_ACCESS_READ,
            Capability.RANDOM_ACCESS_WRITE,
            Capability.READ_CONTENT,
            Capability.RENAME,
            Capability.SET_LAST_MODIFIED_FILE,
            Capability.SET_LAST_MODIFIED_FOLDER,
            Capability.URI,
            Capability.WRITE_CONTENT ) );

    public GaeFileProvider() {
        setFileNameParser( GaeFileNameParser.getInstance() );
    }

    protected FileSystem doCreateFileSystem( FileName rootName, FileSystemOptions options ) throws FileSystemException {
        return new GaeFileSystem( rootName, options );
    }

    public Collection<Capability> getCapabilities() {
        return capabilities;
    }
}
