Package org.apache.druid.segment.writeout

Class ByteBufferWriteOutBytes

java.lang.Object

java.io.OutputStream

org.apache.druid.segment.writeout.WriteOutBytes

org.apache.druid.segment.writeout.ByteBufferWriteOutBytes

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable, Channel, WritableByteChannel

Direct Known Subclasses:

HeapByteBufferWriteOutBytes

public abstract class ByteBufferWriteOutBytes
extends WriteOutBytes

Method Summary

Modifier and Type	Method	Description
protected abstract ByteBuffer	allocateBuffer()
InputStream	asInputStream()	Creates a finite InputStream with the bytes that are written to this WriteOutBytes so far.
void	free()
boolean	isOpen()
void	readFully(long pos, ByteBuffer buffer)	Reads bytes from the byte sequences, represented by this WriteOutBytes, at the random position, into the given buffer.
long	size()	Returns the number of bytes written to this WriteOutBytes so far.
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)
int	write(ByteBuffer src)
void	writeInt(int v)	Writes 4 bytes of the given value in big-endian order, i.
void	writeTo(ByteBuffer out)	Takes all bytes that are written to this WriteOutBytes so far and writes them into the given ByteBuffer.
void	writeTo(WritableByteChannel channel)	Takes all bytes that are written to this WriteOutBytes so far and writes them into the given channel.

Methods inherited from class org.apache.druid.segment.writeout.WriteOutBytes

close

Methods inherited from class java.io.OutputStream

flush, nullOutputStream

Methods inherited from class java.lang.Object

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

Method Detail

size

public long size()

Description copied from class: WriteOutBytes

Returns the number of bytes written to this WriteOutBytes so far.

Specified by:

size in class WriteOutBytes

allocateBuffer

protected abstract ByteBuffer allocateBuffer()

write

public void write(int b)

Specified by:

write in class OutputStream

writeInt

public void writeInt(int v)

Description copied from class: WriteOutBytes

Writes 4 bytes of the given value in big-endian order, i. e. similar to DataOutput.writeInt(int).

Specified by:

writeInt in class WriteOutBytes

write

public void write(byte[] b)

Overrides:

write in class OutputStream

write

public void write(byte[] b,
                  int off,
                  int len)

Overrides:

write in class WriteOutBytes

write

public int write(ByteBuffer src)

writeTo

public void writeTo(WritableByteChannel channel)
             throws IOException

Description copied from class: WriteOutBytes

Takes all bytes that are written to this WriteOutBytes so far and writes them into the given channel.

Specified by:

writeTo in class WriteOutBytes

Throws:

IOException

writeTo

public void writeTo(ByteBuffer out)

Takes all bytes that are written to this WriteOutBytes so far and writes them into the given ByteBuffer. This method changes the position of the out buffer by the size() of this WriteOutBytes.

Throws:

BufferOverflowException - if the Buffer.remaining() capacity of the given buffer is smaller than the size of this WriteOutBytes

readFully

public void readFully(long pos,
                      ByteBuffer buffer)

Description copied from class: WriteOutBytes

Reads bytes from the byte sequences, represented by this WriteOutBytes, at the random position, into the given buffer.

Specified by:

readFully in class WriteOutBytes

asInputStream

public InputStream asInputStream()
                          throws IOException

Description copied from class: WriteOutBytes

Creates a finite InputStream with the bytes that are written to this WriteOutBytes so far. The returned InputStream must be closed properly after it's used up.

Specified by:

asInputStream in class WriteOutBytes

Throws:

IOException

isOpen

public boolean isOpen()

free

public void free()