org.jboss.netty.channel

Class DefaultFileRegion

java.lang.Object

org.jboss.netty.channel.DefaultFileRegion

All Implemented Interfaces:

FileRegion, ExternalResourceReleasable

public class DefaultFileRegion
extends java.lang.Object
implements FileRegion

Field Summary

Fields

Modifier and Type	Field and Description
private long	count
private java.nio.channels.FileChannel	file
private static InternalLogger	logger
private long	position
private boolean	releaseAfterTransfer

Constructor Summary

Constructors

Constructor and Description
DefaultFileRegion(java.nio.channels.FileChannel file, long position, long count)
DefaultFileRegion(java.nio.channels.FileChannel file, long position, long count, boolean releaseAfterTransfer)

Method Summary

Modifier and Type	Method and Description
long	getCount() Returns the number of bytes to transfer.
long	getPosition() Returns the offset in the file where the transfer began.
boolean	releaseAfterTransfer()
void	releaseExternalResources() Releases the external resources that this object depends on.
long	transferTo(java.nio.channels.WritableByteChannel target, long position) Transfers the content of this file region to the specified channel.

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final InternalLogger logger

file

private final java.nio.channels.FileChannel file

position

private final long position

count

private final long count

releaseAfterTransfer

private final boolean releaseAfterTransfer

Constructor Detail

DefaultFileRegion

public DefaultFileRegion(java.nio.channels.FileChannel file,
                         long position,
                         long count)

DefaultFileRegion

public DefaultFileRegion(java.nio.channels.FileChannel file,
                         long position,
                         long count,
                         boolean releaseAfterTransfer)

Method Detail

getPosition

public long getPosition()

Description copied from interface: FileRegion

Returns the offset in the file where the transfer began.

Specified by:

getPosition in interface FileRegion

getCount

public long getCount()

Description copied from interface: FileRegion

Returns the number of bytes to transfer.

Specified by:

getCount in interface FileRegion

releaseAfterTransfer

public boolean releaseAfterTransfer()

transferTo

public long transferTo(java.nio.channels.WritableByteChannel target,
                       long position)
                throws java.io.IOException

Description copied from interface: FileRegion

Transfers the content of this file region to the specified channel.

Specified by:

transferTo in interface FileRegion

Parameters:

target - the destination of the transfer

position - the relative offset of the file where the transfer begins from. For example, 0 will make the transfer start from FileRegion.getPosition()th byte and FileRegion.getCount() - 1 will make the last byte of the region transferred.

Throws:

java.io.IOException

releaseExternalResources

public void releaseExternalResources()

Description copied from interface: ExternalResourceReleasable

Releases the external resources that this object depends on. You should not call this method if the external resources (e.g. thread pool) are in use by other objects.

Specified by:

releaseExternalResources in interface ExternalResourceReleasable