org.apache.poi.poifs.nio
Class DataSource

java.lang.Object
  extended by org.apache.poi.poifs.nio.DataSource
Direct Known Subclasses:
ByteArrayBackedDataSource, FileBackedDataSource

public abstract class DataSource
extends java.lang.Object

Common definition of how we read and write bytes


Constructor Summary
DataSource()
           
 
Method Summary
abstract  void close()
          Close the underlying stream
abstract  void copyTo(java.io.OutputStream stream)
          Copies the contents to the specified OutputStream
abstract  java.nio.ByteBuffer read(int length, long position)
           
abstract  long size()
           
abstract  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

DataSource

public DataSource()
Method Detail

read

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

write

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

size

public abstract long size()
                   throws java.io.IOException
Throws:
java.io.IOException

close

public abstract void close()
                    throws java.io.IOException
Close the underlying stream

Throws:
java.io.IOException

copyTo

public abstract void copyTo(java.io.OutputStream stream)
                     throws java.io.IOException
Copies the contents to the specified OutputStream

Throws:
java.io.IOException


Copyright 2012 The Apache Software Foundation or its licensors, as applicable.