org.kalypso.project.database.common.utils.PlanerClientFileSystemManager.java Source code

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Here is the source code for org.kalypso.project.database.common.utils.PlanerClientFileSystemManager.java

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/*----------------    FILE HEADER KALYPSO ------------------------------------------
 *
 *  This file is part of kalypso.
 *  Copyright (C) 2004 by:
 * 
 *  Technical University Hamburg-Harburg (TUHH)
 *  Institute of River and coastal engineering
 *  Denickestrae 22
 *  21073 Hamburg, Germany
 *  http://www.tuhh.de/wb
 * 
 *  and
 *  
 *  Bjoernsen Consulting Engineers (BCE)
 *  Maria Trost 3
 *  56070 Koblenz, Germany
 *  http://www.bjoernsen.de
 * 
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 * 
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 * 
 *  Contact:
 * 
 *  E-Mail:
 *  belger@bjoernsen.de
 *  schlienger@bjoernsen.de
 *  v.doemming@tuhh.de
 *   
 *  ---------------------------------------------------------------------------*/
package org.kalypso.project.database.common.utils;

import java.io.File;
import java.net.URL;

import org.apache.commons.vfs2.FileObject;
import org.apache.commons.vfs2.FileSystemException;
import org.apache.commons.vfs2.FileSystemManager;
import org.apache.commons.vfs2.FileSystemOptions;
import org.apache.commons.vfs2.impl.DefaultFileSystemManager;
import org.apache.commons.vfs2.provider.ftp.FtpFileSystemConfigBuilder;
import org.kalypso.commons.vfs.IFileSystemManagerResolveDelegate;

/**
 * @author Dirk Kuch
 */
public class PlanerClientFileSystemManager implements IFileSystemManagerResolveDelegate {

    private final FileSystemOptions m_ftpOptions;

    public PlanerClientFileSystemManager() {
        m_ftpOptions = new FileSystemOptions();
        FtpFileSystemConfigBuilder.getInstance().setPassiveMode(m_ftpOptions, true);
    }

    /**
     * @see org.apache.commons.vfs.impl.DefaultFileSystemManager#resolveFile(org.apache.commons.vfs.FileObject,
     *      java.lang.String, org.apache.commons.vfs.FileSystemOptions)
     */
    public FileObject resolveFile(final FileSystemManager manager, final FileObject baseFile, final String uri,
            final FileSystemOptions fileSystemOptions) throws FileSystemException {
        if (isFtpProtocol(baseFile, uri))
            configurePassiveMode(fileSystemOptions);

        if (manager instanceof DefaultFileSystemManager) {
            final DefaultFileSystemManager def = (DefaultFileSystemManager) manager;

            return def.resolveFile(baseFile, uri, m_ftpOptions);
        }

        return manager.resolveFile(baseFile, uri);
    }

    private void configurePassiveMode(final FileSystemOptions options) {
        FtpFileSystemConfigBuilder.getInstance().setPassiveMode(options, true);
    }

    /**
     * @see org.apache.commons.vfs.impl.DefaultFileSystemManager#resolveFile(org.apache.commons.vfs.FileObject,
     *      java.lang.String)
     */
    @Override
    public FileObject resolveFile(final FileSystemManager manager, final FileObject baseFile, final String uri)
            throws FileSystemException {
        if (isFtpProtocol(baseFile, uri)) {
            if (manager instanceof DefaultFileSystemManager) {
                final DefaultFileSystemManager def = (DefaultFileSystemManager) manager;

                return def.resolveFile(baseFile, uri, m_ftpOptions);
            }
        }

        return manager.resolveFile(baseFile, uri);
    }

    /**
     * @see org.apache.commons.vfs.impl.DefaultFileSystemManager#resolveFile(java.lang.String)
     */
    @Override
    public FileObject resolveFile(final FileSystemManager manager, final String uri) throws FileSystemException {
        if (isFtpProtocol(uri))
            return manager.resolveFile(uri, m_ftpOptions);

        return manager.resolveFile(uri);
    }

    /**
     * @see org.apache.commons.vfs.impl.DefaultFileSystemManager#resolveFile(java.lang.String,
     *      org.apache.commons.vfs.FileSystemOptions)
     */
    @Override
    public FileObject resolveFile(final FileSystemManager manager, final String uri,
            final FileSystemOptions fileSystemOptions) throws FileSystemException {
        if (isFtpProtocol(uri))
            configurePassiveMode(fileSystemOptions);

        return manager.resolveFile(uri, fileSystemOptions);
    }

    private boolean isFtpProtocol(final String uri) {
        return uri.toLowerCase().startsWith("ftp"); //$NON-NLS-1$
    }

    private boolean isFtpProtocol(final FileObject baseFile, final String uri) throws FileSystemException {
        if (baseFile != null) {
            final URL url = baseFile.getURL();
            if (url.getProtocol().toLowerCase().startsWith("ftp")) //$NON-NLS-1$
                return true;
        }

        return isFtpProtocol(uri);
    }

    /**
     * @see org.kalypso.commons.io.IFileSystemManagerResolveDelegate#resolveFile(org.apache.commons.vfs.FileSystemManager,
     *      java.io.File, java.lang.String)
     */
    @Override
    public FileObject resolveFile(final FileSystemManager manager, final File baseFile, final String name)
            throws FileSystemException {
        return manager.resolveFile(baseFile, name);
    }
}