org.infinispan.container
Class SimpleDataContainer

java.lang.Object
  org.infinispan.container.SimpleDataContainer

All Implemented Interfaces:

Iterable<InternalCacheEntry>, DataContainer

@ThreadSafe
public class SimpleDataContainer
extends Object
implements DataContainer

Simple data container that does not order entries for eviction, implemented using two ConcurrentHashMaps, one for mortal and one for immortal entries.

This container does not support eviction, in that entries are unsorted.

This implementation offers O(1) performance for all operations.

Since:

4.0

Author:

Manik Surtani

Constructor Summary

SimpleDataContainer()

Method Summary

void	clear() Removes all entries in the container
boolean	containsKey(Object k) Tests whether an entry exists in the container
InternalCacheEntry	get(Object k) Retrieves a cached entry
Iterator<InternalCacheEntry>	iterator()
Set<Object>	keySet()
void	purgeExpired() Purges entries that have passed their expiry time
void	put(Object k, Object v, long lifespan, long maxIdle) Puts an entry in the cache along with a lifespan and a maxIdle time
InternalCacheEntry	remove(Object k) Removes an entry from the cache
int	size()

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleDataContainer

public SimpleDataContainer()

Method Detail

get

public InternalCacheEntry get(Object k)

Description copied from interface: DataContainer

Retrieves a cached entry

Specified by:

get in interface DataContainer

Parameters:

k - key under which entry is stored

Returns:

entry, if it exists and has not expired, or null if not

put

public void put(Object k,
                Object v,
                long lifespan,
                long maxIdle)

Description copied from interface: DataContainer

Puts an entry in the cache along with a lifespan and a maxIdle time

Specified by:

put in interface DataContainer

Parameters:

k - key under which to store entry

v - value to store

lifespan - lifespan in milliseconds. -1 means immortal.

maxIdle - max idle time for which to store entry. -1 means forever.

containsKey

public boolean containsKey(Object k)

Description copied from interface: DataContainer

Tests whether an entry exists in the container

Specified by:

containsKey in interface DataContainer

Parameters:

k - key to test

Returns:

true if entry exists and has not expired; false otherwise

remove

public InternalCacheEntry remove(Object k)

Description copied from interface: DataContainer

Removes an entry from the cache

Specified by:

remove in interface DataContainer

Parameters:

k - key to remove

Returns:

entry removed, or null if it didn't exist or had expired

size

public int size()

Specified by:

size in interface DataContainer

Returns:

count of the number of entries in the container

clear

public void clear()

Description copied from interface: DataContainer

Removes all entries in the container

Specified by:

clear in interface DataContainer

keySet

public Set<Object> keySet()

Specified by:

keySet in interface DataContainer

Returns:

a set of keys contained in the container

purgeExpired

public void purgeExpired()

Description copied from interface: DataContainer

Purges entries that have passed their expiry time

Specified by:

purgeExpired in interface DataContainer

iterator

public Iterator<InternalCacheEntry> iterator()

Specified by:

iterator in interface Iterable<InternalCacheEntry>