Package org.apache.drill.exec.vector

Class IntVector.BufferedMutator

java.lang.Object

org.apache.drill.exec.vector.IntVector.BufferedMutator

Enclosing class:

IntVector

public static final class IntVector.BufferedMutator
extends Object

Helper class to buffer container mutation as a means to optimize native memory copy operations. NB: this class is automatically generated from ValueVectorTypes.tdd using FreeMarker.

Constructor Summary

Constructors

Constructor	Description
BufferedMutator(int startIdx, int buffSz, IntVector parent)	Buffered mutator to optimize bulk access to the underlying vector container
BufferedMutator(int startIdx, IntVector parent)

Method Summary

Modifier and Type	Method	Description
void	flush()
ByteBuffer	getByteBuffer()
void	setSafe(int value)
void	setSafe(int[] values, int numValues)
static final void	writeInt(int val, byte[] buffer, int pos)

Methods inherited from class java.lang.Object

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

Constructor Details

BufferedMutator

public BufferedMutator(int startIdx,
 IntVector parent)

BufferedMutator

public BufferedMutator(int startIdx,
 int buffSz,
 IntVector parent)

Buffered mutator to optimize bulk access to the underlying vector container

Parameters:

startIdx - start idex of the first value to be copied

buffSz - buffer length to us

parent - parent container object

Method Details

setSafe

public void setSafe(int value)

setSafe

public void setSafe(int[] values,
 int numValues)

writeInt

public static final void writeInt(int val,
 byte[] buffer,
 int pos)

getByteBuffer

public ByteBuffer getByteBuffer()

Returns:

the backing byte buffer; this is useful when the caller can infer the values to write but wants to avoid having to use yet another intermediary byte array; caller is responsible for flushing the buffer

flush

public void flush()