org.xnio.channels
Class BlockingReadableByteChannel

java.lang.Object
  org.xnio.channels.BlockingReadableByteChannel

All Implemented Interfaces:

Closeable, Channel, ReadableByteChannel, ScatteringByteChannel

public class BlockingReadableByteChannel
extends Object
implements ScatteringByteChannel

A blocking wrapper for a StreamSourceChannel. Read operations will block until some data may be transferred. Once any amount of data is read, the operation will return. If a read timeout is specified, then the read methods will return a 0 if the timeout has elapsed without any data transfer.

Constructor Summary

BlockingReadableByteChannel(StreamSourceChannel delegate)
Construct a new instance.

BlockingReadableByteChannel(StreamSourceChannel delegate, long readTimeout, TimeUnit readTimeoutUnit)
Construct a new instance.

Method Summary

void	close()
boolean	isOpen()
int	read(ByteBuffer dst) Perform a blocking read operation.
long	read(ByteBuffer[] dsts) Perform a blocking, scattering read operation.
long	read(ByteBuffer[] dsts, int offset, int length) Perform a blocking, scattering read operation.
void	setReadTimeout(long readTimeout, TimeUnit readTimeoutUnit) Set the read timeout.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockingReadableByteChannel

public BlockingReadableByteChannel(StreamSourceChannel delegate)

Construct a new instance.

Parameters:

delegate - the channel to forward I/O operations to

BlockingReadableByteChannel

public BlockingReadableByteChannel(StreamSourceChannel delegate,
                                   long readTimeout,
                                   TimeUnit readTimeoutUnit)

Construct a new instance.

Parameters:

delegate - the channel to forward I/O operations to

readTimeout - the read timeout

readTimeoutUnit - the read timeout unit

Method Detail

setReadTimeout

public void setReadTimeout(long readTimeout,
                           TimeUnit readTimeoutUnit)

Set the read timeout.

Parameters:

readTimeout - the read timeout

readTimeoutUnit - the read timeout unit

read

public long read(ByteBuffer[] dsts,
                 int offset,
                 int length)
          throws IOException

Perform a blocking, scattering read operation.

Specified by:

read in interface ScatteringByteChannel

Parameters:

dsts - the destination buffers

offset - the offset into the destination buffer array

length - the number of buffers to read into

Returns:

the number of bytes actually read (will be greater than zero)

Throws:

IOException - if an I/O error occurs

read

public long read(ByteBuffer[] dsts)
          throws IOException

Perform a blocking, scattering read operation.

Specified by:

read in interface ScatteringByteChannel

Parameters:

dsts - the destination buffers

Returns:

the number of bytes actually read (will be greater than zero)

Throws:

IOException - if an I/O error occurs

read

public int read(ByteBuffer dst)
         throws IOException

Perform a blocking read operation.

Specified by:

read in interface ReadableByteChannel

Parameters:

dst - the destination buffer

Returns:

the number of bytes actually read (will be greater than zero)

Throws:

IOException - if an I/O error occurs

isOpen

public boolean isOpen()

Specified by:

isOpen in interface Channel

close

public void close()
           throws IOException

Specified by:

close in interface Closeable

Specified by:

close in interface Channel

Throws:

IOException