oracle.ifs.utils.common

Class UniqueIdMap

java.lang.Object

oracle.ifs.utils.common.UniqueIdMap

public class UniqueIdMap
extends Object

UniqueIdMap is a class that provides unique identifiers for its elements and constant-time access to the elements by id.

Constructor Summary

Constructors

Constructor and Description
UniqueIdMap() Create a new UniqueIdMap with default initial capacity.
UniqueIdMap(int n) Create a new UniqueIdMap with the given initial capacity.

Method Summary

Modifier and Type	Method and Description
Object	get(int id) Get the element with the provided unique identifier.
int	put(Object obj) Add an element to the map.
void	remove(int id) Remove the element with the provided unique identifier.

Methods inherited from class java.lang.Object

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

Constructor Detail

UniqueIdMap

public UniqueIdMap()

Create a new UniqueIdMap with default initial capacity.

UniqueIdMap

public UniqueIdMap(int n)

Create a new UniqueIdMap with the given initial capacity.

Method Detail

put

public int put(Object obj)

Add an element to the map.

Returns:

the unique identifier Constraint: If the maximum number of elements ever simultaneously contained in the map is N, then the unique identifier will be less than or equal to N.

get

public Object get(int id)

Get the element with the provided unique identifier.

Returns:

the element with the given unique id, or null, if id is not in use.

remove

public void remove(int id)

Remove the element with the provided unique identifier. The given identifier will be freed for later reuse.