org.apache.arrow.vector.ipc

Class ReadChannel

java.lang.Object

org.apache.arrow.vector.ipc.ReadChannel

All Implemented Interfaces:

AutoCloseable

Direct Known Subclasses:

SeekableReadChannel

public class ReadChannel
extends Object
implements AutoCloseable

Adapter around ReadableByteChannel that reads into ArrowBufs.

Constructor Summary

Constructors

Constructor and Description
ReadChannel(ReadableByteChannel in)

Method Summary

Modifier and Type	Method and Description
long	bytesRead()
void	close()
long	readFully(ArrowBuf buffer, long length) Reads up to len into buffer.
int	readFully(ByteBuffer buffer) Reads bytes into buffer until it is full (buffer.remaining() == 0).

Methods inherited from class java.lang.Object

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

Constructor Detail

ReadChannel

public ReadChannel(ReadableByteChannel in)

Method Detail

bytesRead

public long bytesRead()

readFully

public int readFully(ByteBuffer buffer)
              throws IOException

Reads bytes into buffer until it is full (buffer.remaining() == 0). Returns the number of bytes read which can be less than full if there are no more.

Parameters:

buffer - The buffer to read to

Returns:

the number of byte read

Throws:

IOException - if nit enough bytes left to read

readFully

public long readFully(ArrowBuf buffer,
                      long length)
               throws IOException

Reads up to len into buffer. Returns bytes read.

Parameters:

buffer - the buffer to read to

length - the amount of bytes to read

Returns:

the number of bytes read

Throws:

IOException - if nit enough bytes left to read

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Throws:

IOException