org.lsst.ccs.daq.ims.channel

Class IntFileChannelReader

java.lang.Object

org.lsst.ccs.daq.ims.channel.IntFileChannelReader

All Implemented Interfaces:

Closeable, AutoCloseable, Channel, ReadableIntChannel

public class IntFileChannelReader
extends Object
implements ReadableIntChannel

A class for reading data from a file channel, at a given position and length within the corresponding file.

Author:

tonyj

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	isOpen()
int	read() Reads a single int from the channel, or throws EOFException if no data is left.
int	read(IntBuffer buffer) Reads into the given buffer.

Methods inherited from class java.lang.Object

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

Method Detail

read

public int read()
         throws IOException

Description copied from interface: ReadableIntChannel

Reads a single int from the channel, or throws EOFException if no data is left.

Specified by:

read in interface ReadableIntChannel

Returns:

The next integer read

Throws:

EOFException - If no data remains in the channel

IOException - If some other IO error occurs.

read

public int read(IntBuffer buffer)
         throws IOException

Description copied from interface: ReadableIntChannel

Reads into the given buffer. The default implementation continually calls {code #read()} until the buffer is full or no more data is available. Implementing classes are encouraged to override this with something more efficient where possible.

Specified by:

read in interface ReadableIntChannel

Parameters:

buffer - The buffer into which the data will be read.

Returns:

The number of ints read, or -1 if end of file reached before any data was transferred.

Throws:

IOException

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 AutoCloseable

Specified by:

close in interface Channel

Throws:

IOException