edu.sdsc.grid.io.srb
Class SRBFileOutputStream

java.lang.Object
  java.io.OutputStream
      edu.sdsc.grid.io.GeneralFileOutputStream
          edu.sdsc.grid.io.RemoteFileOutputStream
              edu.sdsc.grid.io.srb.SRBFileOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable

public class SRBFileOutputStream
extends RemoteFileOutputStream

A SRBFileOutputStream writes bytes to a file in a file system. What files are available depends on the host environment.

SRBFileOutputStream is meant for writing streams of raw bytes such as image data.

Since:

JARGON1.4

Field Summary

protected SRBFileSystem

fileSystem Holds the server connection used by this stream.

Fields inherited from class edu.sdsc.grid.io.GeneralFileOutputStream

fd

Constructor Summary

SRBFileOutputStream(SRBFile file)
Creates a FileInputStream by opening a connection to an actual file, the file named by the File object file in the file system.

SRBFileOutputStream(SRBFileSystem fileSystem, java.lang.String name)
Creates a FileOuputStream by opening a connection to an actual file, the file named by the path name name in the file system.

Method Summary

void	close() Closes this file output stream and releases any system resources associated with this stream.
protected void	open(GeneralFile file) Opens the given file for use by this stream.
void	write(byte[] buffer, int offset, int length) Writes len bytes from the specified byte array starting at offset off to this file output stream.

Methods inherited from class edu.sdsc.grid.io.GeneralFileOutputStream

finalize, write, write

Methods inherited from class java.io.OutputStream

flush

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

fileSystem

protected SRBFileSystem fileSystem

Holds the server connection used by this stream.

Constructor Detail

SRBFileOutputStream

public SRBFileOutputStream(SRBFileSystem fileSystem,
                           java.lang.String name)
                    throws java.io.IOException

Creates a FileOuputStream by opening a connection to an actual file, the file named by the path name name in the file system.

First, the security is checked to verify the file can be written.

If the named file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading then a IOException is thrown.

Parameters:

name - the system-dependent file name.

Throws:

java.io.IOException - if the file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.

SRBFileOutputStream

public SRBFileOutputStream(SRBFile file)
                    throws java.io.IOException

Creates a FileInputStream by opening a connection to an actual file, the file named by the File object file in the file system. A new FileDescriptor object is created to represent this file connection.

First, the security is checked to verify the file can be written.

If the named file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading then a IOException is thrown.

Parameters:

file - the file to be opened for reading.

Throws:

java.io.IOException - if the file does not exist, is a directory rather than a regular file, or for some other reason cannot be opened for reading.

See Also:

File.getPath()

Method Detail

open

protected void open(GeneralFile file)
             throws java.io.IOException

Opens the given file for use by this stream.

Specified by:

open in class GeneralFileOutputStream

Parameters:

file - the file to be opened.

Throws:

java.io.IOException - if an I/O error occurs.

write

public void write(byte[] buffer,
                  int offset,
                  int length)
           throws java.io.IOException

Writes len bytes from the specified byte array starting at offset off to this file output stream.

Specified by:

write in class GeneralFileOutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

Throws:

java.io.IOException - if an I/O error occurs.

close

public void close()
           throws java.io.IOException

Closes this file output stream and releases any system resources associated with this stream. This file output stream may no longer be used for writing bytes.

If this stream has an associated channel then the channel is closed as well.

Specified by:

close in interface java.io.Closeable

Specified by:

close in class GeneralFileOutputStream

Throws:

java.io.IOException - if an I/O error occurs.