com.newatlanta.appengine.vfs.provider.GaeFileSystem.java Source code

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Here is the source code for com.newatlanta.appengine.vfs.provider.GaeFileSystem.java

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/*
 * 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.appengine.vfs.provider;

import java.util.Collection;

import org.apache.commons.vfs.FileName;
import org.apache.commons.vfs.FileObject;
import org.apache.commons.vfs.FileSystemException;
import org.apache.commons.vfs.FileSystemOptions;
import org.apache.commons.vfs.provider.AbstractFileSystem;

/**
 * Creates {@link GaeFileObject} 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 GaeFileSystem extends AbstractFileSystem {

    protected GaeFileSystem(FileName rootName, FileSystemOptions fileSystemOptions) {
        super(rootName, null, fileSystemOptions);
    }

    @SuppressWarnings("unchecked")
    protected void addCapabilities(Collection capabilities) {
        capabilities.addAll(GaeFileProvider.capabilities);
    }

    protected FileObject createFile(FileName fileName) {
        return new GaeFileObject(fileName, this);
    }

    @Override
    public synchronized FileObject resolveFile(FileName name) throws FileSystemException {
        if (!"gae".equals(name.getScheme())) {
            return getFileSystemManager().resolveFile(name.toString());
        }
        return super.resolveFile(name);
    }
}