io.druid.collections.spatial

Class ImmutableNode

java.lang.Object

io.druid.collections.spatial.ImmutableNode

Direct Known Subclasses:

ImmutablePoint

public class ImmutableNode
extends Object

Byte layout: Header 0 to 1 : the MSB is a boolean flag for isLeaf, the next 15 bits represent the number of children of a node Body 2 to 2 + numDims * Floats.BYTES : minCoordinates 2 + numDims * Floats.BYTES to 2 + 2 * numDims * Floats.BYTES : maxCoordinates concise set rest (children) : Every 4 bytes is storing an offset representing the position of a child. The child offset is an offset from the initialOffset

Field Summary

Fields

Modifier and Type	Field and Description
static int	HEADER_NUM_BYTES

Constructor Summary

Constructors

Constructor and Description
ImmutableNode(int numDims, int initialOffset, int offsetFromInitial, ByteBuffer data, BitmapFactory bitmapFactory)
ImmutableNode(int numDims, int initialOffset, int offsetFromInitial, short numChildren, boolean leaf, ByteBuffer data, BitmapFactory bitmapFactory)

Method Summary

Modifier and Type	Method and Description
BitmapFactory	getBitmapFactory()
Iterable<ImmutableNode>	getChildren()
ByteBuffer	getData()
ImmutableBitmap	getImmutableBitmap()
int	getInitialOffset()
float[]	getMaxCoordinates()
float[]	getMinCoordinates()
int	getNumChildren()
int	getNumDims()
int	getOffsetFromInitial()
boolean	isLeaf()

Methods inherited from class java.lang.Object

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

Field Detail

HEADER_NUM_BYTES

public static final int HEADER_NUM_BYTES

See Also:

Constant Field Values

Constructor Detail

ImmutableNode

public ImmutableNode(int numDims,
                     int initialOffset,
                     int offsetFromInitial,
                     ByteBuffer data,
                     BitmapFactory bitmapFactory)

ImmutableNode

public ImmutableNode(int numDims,
                     int initialOffset,
                     int offsetFromInitial,
                     short numChildren,
                     boolean leaf,
                     ByteBuffer data,
                     BitmapFactory bitmapFactory)

Method Detail

getBitmapFactory

public BitmapFactory getBitmapFactory()

getInitialOffset

public int getInitialOffset()

getOffsetFromInitial

public int getOffsetFromInitial()

getNumDims

public int getNumDims()

getNumChildren

public int getNumChildren()

isLeaf

public boolean isLeaf()

getMinCoordinates

public float[] getMinCoordinates()

getMaxCoordinates

public float[] getMaxCoordinates()

getImmutableBitmap

public ImmutableBitmap getImmutableBitmap()

getChildren

public Iterable<ImmutableNode> getChildren()

getData

public ByteBuffer getData()