org.apache.druid.collections.spatial

Class Node

java.lang.Object

org.apache.druid.collections.spatial.Node

Direct Known Subclasses:

Point

public class Node
extends Object

Constructor Summary

Constructors

Constructor and Description
Node(float[] minCoordinates, float[] maxCoordinates, boolean isLeaf, BitmapFactory bitmapFactory)
Node(float[] minCoordinates, float[] maxCoordinates, Node child, boolean isLeaf, Node parent, MutableBitmap bitmap) This constructor accepts a single nullable child Node (null value means no child) instead of a collection of children Nodes, because Nodes with no more than one child are created in the codebase yet, while passing a collection of Nodes would necessitate making a defensive copy of this collection in the constructor and extra overhead.

Method Summary

Modifier and Type	Method and Description
void	addChild(Node node)
void	addToBitmapIndex(Node node)
void	clear()
boolean	contains(float[] coords)
boolean	enclose()
double	getArea()
MutableBitmap	getBitmap()
List<Node>	getChildren()
float[]	getMaxCoordinates()
float[]	getMinCoordinates()
int	getNumDims()
Node	getParent()
int	getSizeInBytes()
boolean	isLeaf()
int	storeInByteBuffer(ByteBuffer buffer, int position)

Methods inherited from class java.lang.Object

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

Constructor Detail

Node

public Node(float[] minCoordinates,
            float[] maxCoordinates,
            boolean isLeaf,
            BitmapFactory bitmapFactory)

Node

public Node(float[] minCoordinates,
            float[] maxCoordinates,
            @Nullable
            Node child,
            boolean isLeaf,
            Node parent,
            MutableBitmap bitmap)

This constructor accepts a single nullable child Node (null value means no child) instead of a collection of children Nodes, because Nodes with no more than one child are created in the codebase yet, while passing a collection of Nodes would necessitate making a defensive copy of this collection in the constructor and extra overhead. (One could note that the principle of making a defensive copy is happily violated just in this constructor, other parameters: minCoordinates, maxCoordinates and bitmap. These are recognized flaws that are not tackled yet.) If cases when a Node should be created with multiple children arise, this constructor should be changed to accept a collection of children Nodes.

Method Detail

getNumDims

public int getNumDims()

getMinCoordinates

public float[] getMinCoordinates()

getMaxCoordinates

public float[] getMaxCoordinates()

getParent

public Node getParent()

addChild

public void addChild(Node node)

getChildren

public List<Node> getChildren()

isLeaf

public boolean isLeaf()

getArea

public double getArea()

contains

public boolean contains(float[] coords)

enclose

public boolean enclose()

getBitmap

public MutableBitmap getBitmap()

addToBitmapIndex

public void addToBitmapIndex(Node node)

clear

public void clear()

getSizeInBytes

public int getSizeInBytes()

storeInByteBuffer

public int storeInByteBuffer(ByteBuffer buffer,
                             int position)