org.restlet.engine.io
Class ReadableSizedChannel

java.lang.Object
  org.restlet.engine.io.WrapperChannel<ReadableByteChannel>
      org.restlet.engine.io.ReadableSizedChannel

All Implemented Interfaces:

Closeable, Channel, ReadableByteChannel

public class ReadableSizedChannel
extends WrapperChannel<ReadableByteChannel>
implements ReadableByteChannel

Readable byte channel enforcing a maximum size.

Constructor Summary

ReadableSizedChannel(ReadableByteChannel source, long availableSize)
Constructor.

Method Summary

protected long	getAvailableSize() Returns the remaining size that should be read from the source channel.
protected boolean	isEndDetected() Indicates if the end of the channel has been detected.
int	read(ByteBuffer dst) Reads some bytes and put them into the destination buffer.
protected void	setAvailableSize(long availableSize) Sets the remaining size that should be read from the source channel.
protected void	setEndDetected(boolean endDetected) Indicates if the end of the channel has been detected.

Methods inherited from class org.restlet.engine.io.WrapperChannel

close, getWrappedChannel, isOpen

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.nio.channels.Channel

close, isOpen

Constructor Detail

ReadableSizedChannel

public ReadableSizedChannel(ReadableByteChannel source,
                            long availableSize)

Constructor.

Parameters:

source - The source channel.

availableSize - The total available size that can be read from the source channel.

Method Detail

getAvailableSize

protected long getAvailableSize()

Returns the remaining size that should be read from the source channel.

Returns:

The remaining size that should be read from the source channel.

isEndDetected

protected boolean isEndDetected()

Indicates if the end of the channel has been detected.

Returns:

True if the end of the channel has been detected.

read

public int read(ByteBuffer dst)
         throws IOException

Reads some bytes and put them into the destination buffer. The bytes come from the underlying channel.

Specified by:

read in interface ReadableByteChannel

Parameters:

dst - The destination buffer.

Returns:

The number of bytes read, or -1 if the end of the channel has been reached.

Throws:

IOException

setAvailableSize

protected void setAvailableSize(long availableSize)

Sets the remaining size that should be read from the source channel.

Parameters:

availableSize - The remaining size that should be read from the source channel.

setEndDetected

protected void setEndDetected(boolean endDetected)
                       throws IOException

Indicates if the end of the channel has been detected.

Parameters:

endDetected - True if the end of the channel has been detected.

Throws:

IOException