net.openhft.chronicle.wire

Class CharSequenceObjectMap<T>

java.lang.Object

net.openhft.chronicle.wire.CharSequenceObjectMap<T>

Type Parameters:

T - type of values stored in the map

public class CharSequenceObjectMap<T>
extends Object

Simple hash map implementation optimised for CharSequence keys. It uses open addressing with linear probing and stores key strings directly. Not intended as a general-purpose replacement for HashMap, but can be beneficial in performance-sensitive components where lookups on CharSequence instances are frequent. This implementation is not thread-safe.

Constructor Summary

Constructors

Constructor and Description
CharSequenceObjectMap(int capacity) Creates a map with an initial table size that is the next power of two greater than or equal to capacity with a minimum of sixteen.

Method Summary

Modifier and Type	Method and Description
T	get(CharSequence cs) Retrieve the value associated with a key.
void	put(CharSequence name, T t) Store a value against a key.

Methods inherited from class java.lang.Object

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

Constructor Detail

CharSequenceObjectMap

public CharSequenceObjectMap(int capacity)

Creates a map with an initial table size that is the next power of two greater than or equal to capacity with a minimum of sixteen.

Parameters:

capacity - desired initial capacity before rounding

Method Detail

put

public void put(CharSequence name,
                T t)

Store a value against a key. The key's toString() value is stored if it is not already present, replacing any existing mapping.

Parameters:

name - the key

t - value to store

Throws:

IllegalStateException - if no empty slot can be found after probing

get

public T get(CharSequence cs)

Retrieve the value associated with a key.

Parameters:

cs - the key to search for

Returns:

the mapped value, or null if the key is absent or the map is full and the key cannot be located

Throws:

IllegalStateException - if probing finds no empty slot