IUserData.java

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00001 package edu.rice.cs.hpc.data.util;
00002 
00003 /***
00004  * 
00005  * interface to retrieve or set user data
00006  * 
00007  * methods to implement:
00008  * - get: to retrieve a data
00009  * - put: to store a data
00010  *
00011  */
00012 public interface IUserData<K,V> {
00013 
00014     /***
00015      * get the value of the key
00016      * if the key doesn't exist, it return null
00017      * 
00018      * @param key
00019      * @return
00020      */
00021     public V get(K key);
00022     
00023     /***
00024      * store the pair key, value
00025      * key cannot be null, and has to be unique
00026      * 
00027      * @param key
00028      * @param val
00029      */
00030     public void put(K key, V val);
00031     
00032 }