org.jboss.xnio.channels
Class BufferedChannelInputStream

java.lang.Object
  java.io.InputStream
      org.jboss.xnio.channels.BufferedChannelInputStream

All Implemented Interfaces:

Closeable

public class BufferedChannelInputStream
extends InputStream

An input stream which reads from a stream source channel with a buffer. In addition, the available() method can be used to determine whether the next read will or will not block.

Since:

2.1

Constructor Summary

BufferedChannelInputStream(StreamSourceChannel channel, int bufferSize)
Construct a new instance.

BufferedChannelInputStream(StreamSourceChannel channel, int bufferSize, long timeout, TimeUnit unit)
Construct a new instance.

Method Summary

int	available() Return the number of bytes available to read, or 0 if a subsequent read() operation would block.
void	close() Close the stream.
long	getReadTimeout(TimeUnit unit) Get the read timeout.
int	read() Read a byte, blocking if necessary.
int	read(byte[] b, int off, int len) Read bytes into an array.
void	setReadTimeout(long timeout, TimeUnit unit) Set the read timeout.
long	skip(long n) Skip bytes in the stream.

Methods inherited from class java.io.InputStream

mark, markSupported, read, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

BufferedChannelInputStream

public BufferedChannelInputStream(StreamSourceChannel channel,
                                  int bufferSize)

Construct a new instance.

Parameters:

channel - the channel to wrap

bufferSize - the size of the internal buffer

BufferedChannelInputStream

public BufferedChannelInputStream(StreamSourceChannel channel,
                                  int bufferSize,
                                  long timeout,
                                  TimeUnit unit)

Construct a new instance.

Parameters:

channel - the channel to wrap

bufferSize - the size of the internal buffer

timeout - the initial read timeout, or O for none

unit - the time unit for the read timeout

Method Detail

getReadTimeout

public long getReadTimeout(TimeUnit unit)

Get the read timeout.

Parameters:

unit - the time unit

Returns:

the timeout in the given unit

setReadTimeout

public void setReadTimeout(long timeout,
                           TimeUnit unit)

Set the read timeout. Does not affect read operations in progress.

Parameters:

timeout - the read timeout, or 0 for none

unit - the time unit

read

public int read()
         throws IOException

Read a byte, blocking if necessary.

Specified by:

read in class InputStream

Returns:

the byte read, or -1 if the end of the stream has been reached

Throws:

IOException - if an I/O error occurs

read

public int read(byte[] b,
                int off,
                int len)
         throws IOException

Read bytes into an array.

Overrides:

read in class InputStream

Parameters:

b - the destination array

off - the offset into the array at which bytes should be filled

len - the number of bytes to fill

Returns:

the number of bytes read, or -1 if the end of the stream has been reached

Throws:

IOException - if an I/O error occurs

skip

public long skip(long n)
          throws IOException

Skip bytes in the stream.

Overrides:

skip in class InputStream

Parameters:

n - the number of bytes to skip

Returns:

the number of bytes skipped (0 if the end of stream has been reached)

Throws:

IOException - if an I/O error occurs

available

public int available()
              throws IOException

Return the number of bytes available to read, or 0 if a subsequent read() operation would block. If a 0 is returned, the channel's resumeReads() method may be used to register for read-readiness.

Overrides:

available in class InputStream

Returns:

the number of ready bytes, or 0 for none

Throws:

IOException - if an I/O error occurs

close

public void close()
           throws IOException

Close the stream. Shuts down the channel's read side.

Specified by:

close in interface Closeable

Overrides:

close in class InputStream

Throws:

IOException - if an I/O error occurs