alluxio.client.file.cache.store

Interface PageReadTargetBuffer

All Known Implementing Classes:

ByteArrayTargetBuffer, ByteBufferTargetBuffer, NettyBufTargetBuffer

public interface PageReadTargetBuffer

TargetBuffer for zero-copy read from page store.

Method Summary

Modifier and Type	Method and Description
byte[]	byteArray()
ByteBuffer	byteBuffer()
WritableByteChannel	byteChannel()
long	offset()
int	readFromFile(RandomAccessFile file, int length)
long	remaining()
void	writeBytes(byte[] srcArray, int srcOffset, int length)

Method Detail

byteArray

byte[] byteArray()

Returns:

the byte array

byteBuffer

ByteBuffer byteBuffer()

Returns:

the byte buffer

offset

long offset()

Returns:

offset in the buffer

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 -

readFromFile

int readFromFile(RandomAccessFile file,
                 int length)
          throws IOException

Parameters:

file -

length -

Returns:

bytes read from the file

Throws:

IOException