org.apache.poi.poifs.nio
Class FileBackedDataSource

java.lang.Object
  org.apache.poi.poifs.nio.DataSource
      org.apache.poi.poifs.nio.FileBackedDataSource

public class FileBackedDataSource
extends DataSource

A POIFS DataSource backed by a File

Constructor Summary

FileBackedDataSource(java.io.File file)

FileBackedDataSource(java.nio.channels.FileChannel channel)

Method Summary

void	close() Close the underlying stream
void	copyTo(java.io.OutputStream stream) Copies the contents to the specified OutputStream
java.nio.ByteBuffer	read(int length, long position)
long	size()
void	write(java.nio.ByteBuffer src, long position)

Methods inherited from class java.lang.Object

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

Constructor Detail

FileBackedDataSource

public FileBackedDataSource(java.io.File file)
                     throws java.io.FileNotFoundException

Throws:

java.io.FileNotFoundException

FileBackedDataSource

public FileBackedDataSource(java.nio.channels.FileChannel channel)

Method Detail

read

public java.nio.ByteBuffer read(int length,
                                long position)
                         throws java.io.IOException

Specified by:

read in class DataSource

Throws:

java.io.IOException

write

public void write(java.nio.ByteBuffer src,
                  long position)
           throws java.io.IOException

Specified by:

write in class DataSource

Throws:

java.io.IOException

copyTo

public void copyTo(java.io.OutputStream stream)
            throws java.io.IOException

Description copied from class: DataSource

Copies the contents to the specified OutputStream

Specified by:

copyTo in class DataSource

Throws:

java.io.IOException

size

public long size()
          throws java.io.IOException

Specified by:

size in class DataSource

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Description copied from class: DataSource

Close the underlying stream

Specified by:

close in class DataSource

Throws:

java.io.IOException