mondrian.util

Class BlockingHashMap<K,V>

java.lang.Object

mondrian.util.BlockingHashMap<K,V>

Type Parameters:

K - request (key) type

V - response (value) type

public class BlockingHashMap<K,V>
extends Object

A limited Map implementation which supports waiting for a value to be available when calling get(). Intended for use with producer/consumer queues, where a producer thread puts a value into the collection with a separate thread waiting to get that value. Currently used by the Actor implementations in SegmentCacheManager and MonitorImpl.

Thread safety. BlockingHashMap is thread safe. The class delegates all get and put operations to a ConcurrentHashMap.

Constructor Summary

Constructors

Constructor and Description
BlockingHashMap(int capacity) Creates a BlockingHashMap with given capacity.

Method Summary

Methods

Modifier and Type	Method and Description
V	get(K k) Retrieves the response from the map matching the given key, blocking until it is received.
void	put(K k, V v) Places a (request, response) pair onto the map.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockingHashMap

public BlockingHashMap(int capacity)

Creates a BlockingHashMap with given capacity.

Parameters:

capacity - Capacity

Method Detail

put

public void put(K k,
       V v)

Places a (request, response) pair onto the map.

Parameters:

k - key

v - value

get

public V get(K k)
      throws InterruptedException

Retrieves the response from the map matching the given key, blocking until it is received.

Parameters:

k - key

Returns:

value

Throws:

InterruptedException - if interrupted while waiting