alluxio.file

Interface ReadTargetBuffer

All Known Implementing Classes:

ByteArrayTargetBuffer, ByteBufferTargetBuffer, NettyBufTargetBuffer

public interface ReadTargetBuffer

TargetBuffer for zero-copy read from page store.

Method Summary

Modifier and Type	Method and Description
byte[]	byteArray()
ByteBuffer	byteBuffer()
WritableByteChannel	byteChannel()
int	offset()
void	offset(int newOffset) Sets the new offset in the buffer.
int	readFromFile(RandomAccessFile file, int length)
int	readFromInputStream(InputStream is, int length)
long	remaining()
void	writeBytes(byte[] srcArray, int srcOffset, int length)
void	writeBytes(io.netty.buffer.ByteBuf buf)

Method Detail

byteArray

byte[] byteArray()

Returns:

the byte array

byteBuffer

ByteBuffer byteBuffer()

Returns:

the byte buffer

offset

int offset()

Returns:

offset in the buffer

offset

void offset(int newOffset)

Sets the new offset in the buffer.

Parameters:

newOffset - the new offset

byteChannel

WritableByteChannel byteChannel()

Returns:

the writable channel

remaining

long remaining()

Returns:

the remaining for this buffer

writeBytes

void writeBytes(byte[] srcArray,
                int srcOffset,
                int length)

Parameters:

srcArray -

srcOffset -

length -

writeBytes

void writeBytes(io.netty.buffer.ByteBuf buf)

Parameters:

buf -

readFromFile

int readFromFile(RandomAccessFile file,
                 int length)
          throws IOException

Parameters:

file -

length -

Returns:

bytes read from the file

Throws:

IOException

readFromInputStream

int readFromInputStream(InputStream is,
                        int length)
                 throws IOException

Parameters:

is -

length -

Returns:

bytes read from input stream

Throws:

IOException