Package org.apache.nifi.remote.io.socket

Class BufferStateManager

java.lang.Object

org.apache.nifi.remote.io.socket.BufferStateManager

public class BufferStateManager
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	BufferStateManager.Direction

Field Summary

Fields

Modifier and Type	Field	Description
private ByteBuffer	buffer
private BufferStateManager.Direction	direction
private static final org.slf4j.Logger	logger

Constructor Summary

Constructors

Constructor	Description
BufferStateManager(ByteBuffer buffer)
BufferStateManager(ByteBuffer buffer, BufferStateManager.Direction direction)

Method Summary

Modifier and Type	Method	Description
void	clear()	Clears the contents of the buffer and sets direction to WRITE
void	compact()
void	ensureSize(int requiredSize)	Ensures that the buffer is at least as big as the size specified, resizing the buffer if necessary.
ByteBuffer	prepareForRead(int requiredSize)
ByteBuffer	prepareForWrite(int requiredSize)

Methods inherited from class java.lang.Object

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

Field Details

logger

private static final org.slf4j.Logger logger

buffer

private ByteBuffer buffer

direction

private BufferStateManager.Direction direction

Constructor Details

BufferStateManager

public BufferStateManager(ByteBuffer buffer)

BufferStateManager

public BufferStateManager(ByteBuffer buffer,
 BufferStateManager.Direction direction)

Method Details

ensureSize

public void ensureSize(int requiredSize)

Ensures that the buffer is at least as big as the size specified, resizing the buffer if necessary. This operation MAY change the direction of the buffer.

Parameters:

requiredSize - the desired size of the buffer

prepareForWrite

public ByteBuffer prepareForWrite(int requiredSize)

prepareForRead

public ByteBuffer prepareForRead(int requiredSize)

clear

public void clear()

Clears the contents of the buffer and sets direction to WRITE

compact

public void compact()