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From adammurd...@apache.org
Subject cvs commit: jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/provider/sftp SftpFileObject.java SftpFileProvider.java SftpFileSystem.java
Date Thu, 20 Feb 2003 07:30:36 GMT
adammurdoch    2003/02/19 23:30:36

  Modified:    vfs/src/java/org/apache/commons/vfs/impl
                        StandardFileSystemManager.java
               vfs/src/java/org/apache/commons/vfs Resources.properties
  Added:       vfs/src/java/org/apache/commons/vfs/provider/sftp
                        SftpFileObject.java SftpFileProvider.java
                        SftpFileSystem.java
  Log:
  Added an initial SFTP provider.
  
  Revision  Changes    Path
  1.11      +2 -1      jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/impl/StandardFileSystemManager.java
  
  Index: StandardFileSystemManager.java
  ===================================================================
  RCS file: /home/cvs/jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/impl/StandardFileSystemManager.java,v
  retrieving revision 1.10
  retrieving revision 1.11
  diff -u -r1.10 -r1.11
  --- StandardFileSystemManager.java	17 Feb 2003 09:22:14 -0000	1.10
  +++ StandardFileSystemManager.java	20 Feb 2003 07:30:36 -0000	1.11
  @@ -93,6 +93,7 @@
           addProvider( "ftp", "org.apache.commons.vfs.provider.ftp.FtpFileProvider" );
           addProvider( "smb", "org.apache.commons.vfs.provider.smb.SmbFileProvider" );
           addProvider( "webdav", "org.apache.commons.vfs.provider.webdav.WebdavFileProvider"
);
  +        addProvider( "sftp", "org.apache.commons.vfs.provider.sftp.SftpFileProvider" );
           addProvider( "tmp", "org.apache.commons.vfs.provider.temp.TemporaryFileProvider"
);
   
           // Add a default provider
  
  
  
  1.18      +10 -0     jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/Resources.properties
  
  Index: Resources.properties
  ===================================================================
  RCS file: /home/cvs/jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/Resources.properties,v
  retrieving revision 1.17
  retrieving revision 1.18
  diff -u -r1.17 -r1.18
  --- Resources.properties	15 Feb 2003 02:35:35 -0000	1.17
  +++ Resources.properties	20 Feb 2003 07:30:36 -0000	1.18
  @@ -139,6 +139,16 @@
   vfs.provider.webdav/delete-file.error=Delete file failed with message: "{0}".
   vfs.provider.webdav/create-client.error=Could not create client for server "{0}".
   
  +# SFTP Provider
  +vfs.provider.sftp/connect.error=Could not connect to SFTP server at "{0}".
  +vfs.provider.sftp/unknown-permissions.error=File permissions not fetched.
  +vfs.provider.sftp/unknown-size.error=File size not fetched.
  +vfs.provider.sftp/create-folder.error=Folder creation failed with unknown error.
  +vfs.provider.sftp/delete.error=Delete failed with unknown error.
  +vfs.provider.sftp/list-children.error=List folder contents failed with unknown error.
  +vfs.provider.sftp/put-file.error=Write file contents failed with unknown error.
  +vfs.provider.sftp/get-file.error=Read file contents failed with unknown error.
  +
   # Ant tasks
   vfs.tasks/sync.no-destination.error=No destination file or directory specified.
   vfs.tasks/sync.too-many-destinations.error=Cannot specify both a destination file and a
destination directory.
  
  
  
  1.1                  jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/provider/sftp/SftpFileObject.java
  
  Index: SftpFileObject.java
  ===================================================================
  /* ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  package org.apache.commons.vfs.provider.sftp;
  
  import org.apache.commons.vfs.FileObject;
  import org.apache.commons.vfs.FileName;
  import org.apache.commons.vfs.FileType;
  import org.apache.commons.vfs.FileSystemException;
  import org.apache.commons.vfs.util.MonitorOutputStream;
  import org.apache.commons.vfs.provider.AbstractFileObject;
  import org.apache.commons.vfs.provider.TemporaryFileStore;
  import java.io.InputStream;
  import java.io.File;
  import java.io.FileInputStream;
  import java.io.OutputStream;
  import java.io.FileOutputStream;
  import java.io.IOException;
  import java.util.Vector;
  import java.util.ArrayList;
  import java.util.Iterator;
  import java.util.StringTokenizer;
  import com.jcraft.jsch.ChannelSftp;
  import com.jcraft.jsch.SftpATTRS;
  
  /**
   * An SFTP file.
   *
   * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
   * @version $Revision: 1.1 $ $Date: 2003/02/20 07:30:36 $
   */
  class SftpFileObject
      extends AbstractFileObject
      implements FileObject
  {
      // TODO - This was copied from SftpATTRS source.  Need to fix jsch to make the constant
public
      static final int S_IFDIR = 0x4000;
  
      private final SftpFileSystem fileSystem;
      private SftpATTRS attrs;
      private TemporaryFileStore tempFileStore;
  
      public SftpFileObject( final FileName name,
                             final SftpFileSystem fileSystem,
                             final TemporaryFileStore tempFileStore )
      {
          super( name, fileSystem );
          this.fileSystem = fileSystem;
          this.tempFileStore = tempFileStore;
      }
  
      /**
       * Determines the type of this file, returns null if the file does not
       * exist.
       */
      protected FileType doGetType() throws Exception
      {
          statSelf();
  
          if ( attrs == null )
          {
              // TODO - not quite true, but ChannelSftp.stat() swallows exceptions
              return null;
          }
          if ( ( attrs.getFlags() & SftpATTRS.SSH_FILEXFER_ATTR_PERMISSIONS ) == 0 )
          {
              throw new FileSystemException( "vfs.provider.sftp/unknown-permissions.error"
);
          }
          if ( ( attrs.getPermissions() & S_IFDIR ) != 0 )
          {
              return FileType.FOLDER;
          }
          else
          {
              return FileType.FILE;
          }
      }
  
      /**
       * Called when the type or content of this file changes.
       */
      protected void onChange() throws Exception
      {
          statSelf();
      }
  
      /** Fetches file attrs from server. */
      private void statSelf() throws Exception
      {
          final ChannelSftp channel = fileSystem.getChannel();
          try
          {
              attrs = channel.stat( getName().getPath() );
          }
          finally
          {
              fileSystem.putChannel( channel );
          }
      }
  
      /**
       * Creates this file as a folder.
       */
      protected void doCreateFolder() throws Exception
      {
          final ChannelSftp channel = fileSystem.getChannel();
          try
          {
              final boolean ok = channel.mkdir( getName().getPath() );
              if ( !ok )
              {
                  throw new FileSystemException( "vfs.provider.sftp/create-folder.error" );
              }
          }
          finally
          {
              fileSystem.putChannel( channel );
          }
      }
  
      /**
       * Deletes the file.
       */
      protected void doDelete() throws Exception
      {
          final ChannelSftp channel = fileSystem.getChannel();
          try
          {
              final boolean ok;
              if ( getType() == FileType.FILE )
              {
                  ok = channel.rm( getName().getPath() );
              }
              else
              {
                  ok = channel.rmdir( getName().getPath() );
              }
              if ( !ok )
              {
                  throw new FileSystemException( "vfs.provider.sftp/delete.error" );
              }
          }
          finally
          {
              fileSystem.putChannel( channel );
          }
      }
  
      /**
       * Lists the children of this file.
       */
      protected String[] doListChildren() throws Exception
      {
          // List the contents of the folder
          final Vector vector;
          final ChannelSftp channel = fileSystem.getChannel();
          try
          {
              vector = channel.ls( getName().getPath() );
          }
          finally
          {
              fileSystem.putChannel( channel );
          }
          if ( vector == null )
          {
              throw new FileSystemException( "vfs.provider.sftp/list-children.error" );
          }
  
          // Extract the child names
          final ArrayList children = new ArrayList();
          for ( Iterator iterator = vector.iterator(); iterator.hasNext(); )
          {
              // Each entry is in unix ls format <perms> <?> <user> <group>
<size> <date> <name>
              final String stat = (String)iterator.next();
              final StringTokenizer tokens = new StringTokenizer( stat );
              // TODO - check there are the correct number of tokens
              // TODO - handle names with spaces in 'em
              for ( int i = 0; i < 8; tokens.nextToken(), i++ )
              {
              }
              final String name = tokens.nextToken();
              if ( name.equals( "." ) || name.equals( ".." ) )
              {
                  continue;
              }
              children.add( name );
          }
          return (String[])children.toArray( new String[ children.size() ] );
      }
  
      /**
       * Returns the size of the file content (in bytes).
       */
      protected long doGetContentSize() throws Exception
      {
          if ( (attrs.getFlags() & SftpATTRS.SSH_FILEXFER_ATTR_SIZE) == 0 )
          {
              throw new FileSystemException( "vfs.provider.sftp/unknown-size.error" );
          }
          return attrs.getSize();
      }
  
      /**
       * Creates an input stream to read the file content from.
       */
      protected InputStream doGetInputStream() throws Exception
      {
          final ChannelSftp channel = fileSystem.getChannel();
          try
          {
              // TODO - this is a dud, need to add stream based methods to Jsch
              // TODO - reuse the cached file
              // TODO - delete the file on end-of-stream
              final File file = tempFileStore.allocateFile( getName().getBaseName() );
              final boolean ok = channel.get( getName().getPath(), '/' + file.getAbsolutePath()
);
              if ( !ok )
              {
                  throw new FileSystemException( "vfs.provider.sftp/get-file.error" );
              }
              return new FileInputStream( file );
          }
          finally
          {
              fileSystem.putChannel( channel );
          }
      }
  
      /**
       * Creates an output stream to write the file content to.
       */
      protected OutputStream doGetOutputStream() throws Exception
      {
          // TODO - this is a dud, need to add stream based methods to Jsch
          // TODO - reuse the same file for all content operations
          final File file = tempFileStore.allocateFile( getName().getBaseName() );
          return new SftpOutputStream( file );
      }
  
      /**
       * Writes the content from a file.
       */
      private void putContent( final File file ) throws IOException
      {
          final ChannelSftp channel = fileSystem.getChannel();
          try
          {
              final boolean ok = channel.put( '/' + file.getAbsolutePath(), getName().getPath()
);
              if ( !ok )
              {
                  throw new FileSystemException( "vfs.provider.sftp/put-file.error" );
              }
          }
          finally
          {
              fileSystem.putChannel( channel );
          }
      }
  
      /**
       * An output stream that pushes content to the server when this stream
       * is closed.
       */
      private class SftpOutputStream
          extends MonitorOutputStream
      {
          private File file;
  
          public SftpOutputStream( final File file ) throws IOException
          {
              super( new FileOutputStream( file ) );
              this.file = file;
          }
  
          /**
           * Called after this stream is closed.
           */
          protected void onClose() throws IOException
          {
              // TODO - need to delete the file
              putContent( file );
          }
      }
  }
  
  
  
  1.1                  jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/provider/sftp/SftpFileProvider.java
  
  Index: SftpFileProvider.java
  ===================================================================
  /* ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  package org.apache.commons.vfs.provider.sftp;
  
  import org.apache.commons.vfs.FileName;
  import org.apache.commons.vfs.FileSystem;
  import org.apache.commons.vfs.FileSystemException;
  import org.apache.commons.vfs.util.Os;
  import org.apache.commons.vfs.provider.AbstractOriginatingFileProvider;
  import org.apache.commons.vfs.provider.GenericFileName;
  import com.jcraft.jsch.JSch;
  
  /**
   * A provider for accessing files over SFTP.
   *
   * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
   * @version $Revision: 1.1 $ $Date: 2003/02/20 07:30:36 $
   */
  public class SftpFileProvider
      extends AbstractOriginatingFileProvider
  {
      private JSch jSch = new JSch();
  
      /**
       * Initialises the component.
       */
      public void init() throws FileSystemException
      {
          // Figure out where the known_hosts file is
          final String knownHostsPath;
          if ( Os.isFamily( Os.OS_FAMILY_WINDOWS ) )
          {
              // TODO - this may not be true
              final String userName = System.getProperty( "user.name" );
              knownHostsPath = "C:\\cygwin\\home\\" + userName + "\\.ssh\\known_hosts";
          }
          else
          {
              knownHostsPath = System.getProperty( "user.home") + "/.ssh/known_hosts";
          }
  
          jSch.setKnownHosts( knownHostsPath );
      }
  
      /**
       * Parses an absolute URI.
       */
      protected FileName parseUri( final String uri )
          throws FileSystemException
      {
          return GenericFileName.parseUri( uri, 22 );
      }
  
      /**
       * Creates a {@link FileSystem}.
       */
      protected FileSystem doCreateFileSystem( final FileName rootName )
          throws FileSystemException
      {
          return new SftpFileSystem( (GenericFileName)rootName, jSch );
      }
  }
  
  
  
  1.1                  jakarta-commons-sandbox/vfs/src/java/org/apache/commons/vfs/provider/sftp/SftpFileSystem.java
  
  Index: SftpFileSystem.java
  ===================================================================
  /* ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2003 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Commons", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact apache@apache.org.
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  package org.apache.commons.vfs.provider.sftp;
  
  import com.jcraft.jsch.ChannelSftp;
  import com.jcraft.jsch.JSch;
  import com.jcraft.jsch.Session;
  import com.jcraft.jsch.JSchException;
  import java.util.Collection;
  import java.io.IOException;
  import org.apache.commons.vfs.FileName;
  import org.apache.commons.vfs.FileObject;
  import org.apache.commons.vfs.FileSystem;
  import org.apache.commons.vfs.FileSystemException;
  import org.apache.commons.vfs.Capability;
  import org.apache.commons.vfs.provider.AbstractFileSystem;
  import org.apache.commons.vfs.provider.GenericFileName;
  
  /**
   * Represents the files on an SFTP server.
   *
   * @author <a href="mailto:adammurdoch@apache.org">Adam Murdoch</a>
   * @version $Revision: 1.1 $ $Date: 2003/02/20 07:30:36 $
   */
  class SftpFileSystem
      extends AbstractFileSystem
      implements FileSystem
  {
      private Session session;
      private final JSch jSch;
      private ChannelSftp idleChannel;
  
      public SftpFileSystem( final GenericFileName rootName,
                             final JSch jSch )
      {
          super( rootName, null );
          this.jSch = jSch;
      }
  
      /**
       * Returns an SFTP channel to the server.
       */
      protected ChannelSftp getChannel() throws IOException
      {
          // Create the session
          if ( session == null )
          {
              try
              {
                  final GenericFileName rootName = (GenericFileName)getRootName();
                  session = jSch.getSession( rootName.getUserName(),
                                             rootName.getHostName(),
                                             rootName.getPort() );
                  session.setPassword( rootName.getPassword() );
                  session.connect();
              }
              catch ( final JSchException e )
              {
                  throw new FileSystemException( "vfs.provider.sftp/connect.error", getRootName(),
e );
              }
          }
  
          // Use the pooled channel, or create a new one
          final ChannelSftp channel;
          if ( idleChannel != null )
          {
              channel = idleChannel;
              idleChannel = null;
          }
          else
          {
              channel = (ChannelSftp)session.openChannel( "sftp" );
              channel.connect();
          }
  
          return channel;
      }
  
      /**
       * Returns a channel to the pool.
       */
      protected void putChannel( final ChannelSftp channel )
      {
          if ( idleChannel == null )
          {
              idleChannel = channel;
          }
          else
          {
              channel.disconnect();
          }
      }
  
      /**
       * Adds the capabilities of this file system.
       */
      protected void addCapabilities( final Collection caps )
      {
          caps.add( Capability.CREATE );
          caps.add( Capability.DELETE );
          caps.add( Capability.GET_TYPE );
          caps.add( Capability.LIST_CHILDREN );
          caps.add( Capability.READ_CONTENT );
          caps.add( Capability.URI );
          caps.add( Capability.WRITE_CONTENT );
      }
  
      /**
       * Creates a file object.  This method is called only if the requested
       * file is not cached.
       */
      protected FileObject createFile( final FileName name )
          throws FileSystemException
      {
          return new SftpFileObject( name, this, getContext().getTemporaryFileStore() );
      }
  }
  
  
  

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