org.apache.mina.filter.stream

Class FileRegionWriteFilter

java.lang.Object

org.apache.mina.core.filterchain.IoFilterAdapter

org.apache.mina.filter.stream.AbstractStreamWriteFilter<FileRegion>

org.apache.mina.filter.stream.FileRegionWriteFilter

All Implemented Interfaces:

IoFilter

public class FileRegionWriteFilter
extends AbstractStreamWriteFilter<FileRegion>

Filter implementation that converts a FileRegion to IoBuffer objects and writes those buffers to the next filter. When end of the FileRegion has been reached this filter will call IoFilter.NextFilter#messageSent(IoSession,WriteRequest) using the original FileRegion written to the session and notifies WriteFuture on the original WriteRequest.

Normall FileRegion objects should be handled by the IoProcessor but this is not always possible if a filter is being used that needs to modify the contents of the file before sending over the network (i.e. the SslFilter or a data compression filter.)

This filter will ignore written messages which aren't FileRegion instances. Such messages will be passed to the next filter directly.

NOTE: this filter does not close the file channel in FileRegion.getFileChannel() after the data from the file has been written. The FileChannel should be closed in either IoHandler.messageSent(IoSession,Object) or in an IoFutureListener associated with the WriteFuture.

Author:

Apache MINA Project

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.mina.core.filterchain.IoFilter

IoFilter.NextFilter

Field Summary

Fields inherited from class org.apache.mina.filter.stream.AbstractStreamWriteFilter

CURRENT_STREAM, CURRENT_WRITE_REQUEST, DEFAULT_STREAM_BUFFER_SIZE, WRITE_REQUEST_QUEUE

Constructor Summary

Constructors

Constructor and Description
FileRegionWriteFilter()

Method Summary

Methods

Modifier and Type	Method and Description
protected Class<FileRegion>	getMessageClass()
protected IoBuffer	getNextBuffer(FileRegion fileRegion)

Methods inherited from class org.apache.mina.filter.stream.AbstractStreamWriteFilter

filterWrite, getWriteBufferSize, messageSent, onPreAdd, setWriteBufferSize

Methods inherited from class org.apache.mina.core.filterchain.IoFilterAdapter

destroy, exceptionCaught, filterClose, init, inputClosed, messageReceived, onPostAdd, onPostRemove, onPreRemove, sessionClosed, sessionCreated, sessionIdle, sessionOpened, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

FileRegionWriteFilter

public FileRegionWriteFilter()

Method Detail

getMessageClass

protected Class<FileRegion> getMessageClass()

Specified by:

getMessageClass in class AbstractStreamWriteFilter<FileRegion>

getNextBuffer

protected IoBuffer getNextBuffer(FileRegion fileRegion)
                          throws IOException

Specified by:

getNextBuffer in class AbstractStreamWriteFilter<FileRegion>

Throws:

IOException