Package 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	Description
ArrayWrappedIntIntMap()

Method Summary

Modifier and Type	Method	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 Details

ArrayWrappedIntIntMap

public ArrayWrappedIntIntMap()

Method Details

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.