DataSource (POI API Documentation)

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org.apache.poi.poifs.nio
Class DataSource

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

Direct Known Subclasses:: ByteArrayBackedDataSource, FileBackedDataSource

public abstract class DataSource
extends java.lang.Object
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