org.apache.drill.exec.util

Class ArrayWrappedIntIntMap

java.lang.Object

org.apache.drill.exec.util.ArrayWrappedIntIntMap

public class ArrayWrappedIntIntMap
extends Object

Simple Map type data structure for storing entries of (int -> int) mappings where the max key value is below 2^16 to avoid hashing keys and use direct array index reference for retrieving the values. Not thread-safe. Keys and values are expected to be >=0.

Constructor Summary

Constructors

Constructor and Description
ArrayWrappedIntIntMap()

Method Summary

Methods

Modifier and Type	Method and Description
int	get(int key) Returns the value pointed by the given index.
void	put(int key, int value)

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayWrappedIntIntMap

public ArrayWrappedIntIntMap()

Method Detail

put

public void put(int key,
       int value)

get

public int get(int key)

Returns the value pointed by the given index. If the value is not set through put() it either returns Integer.MIN_VALUE or throws ArrayIndexOutOfBounds exception. Error checking is not done for faster retrieval.