org.teiid.cache
Class DefaultCache<K,V>

java.lang.Object
  org.teiid.cache.DefaultCache<K,V>

All Implemented Interfaces:

java.io.Serializable, Cache<K,V>

public class DefaultCache<K,V>
extends java.lang.Object
implements Cache<K,V>, java.io.Serializable

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.teiid.cache.Cache

Cache.Type

Field Summary

protected java.util.Map<java.lang.String,Cache>	children
static int	DEFAULT_MAX_AGE
static int	DEFAULT_MAX_SIZE_TOTAL
protected java.util.LinkedHashSet<org.teiid.cache.DefaultCache.ExpirationEntry<K,V>>	expirationQueue
protected LRUCache<K,org.teiid.cache.DefaultCache.ExpirationEntry<K,V>>	map
protected java.lang.String	name
protected long	ttl

Constructor Summary

DefaultCache(java.lang.String name)

DefaultCache(java.lang.String name, int maxEntries, long ttl)

Method Summary

Cache	addChild(java.lang.String name)
void	addListener(CacheListener listener)
void	clear() Removes all the keys and their values from the Cache
V	get(K key) Retrieves the value for the given Key
Cache	getChild(java.lang.String name)
java.util.Collection<Cache>	getChildren()
static long	getExpirationTime(long defaultTtl, java.lang.Long ttl)
java.lang.String	getName() Name of the cache node
java.util.Set<K>	keySet()
V	put(K key, V value)
V	put(K key, V value, java.lang.Long timeToLive) Associates the specified value with the specified key this cache.
V	remove(K key) Removes the value for this key from a Cache.
boolean	removeChild(java.lang.String name)
int	size() Size of the cache
java.util.Collection<V>	values()

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MAX_SIZE_TOTAL

public static final int DEFAULT_MAX_SIZE_TOTAL

See Also:

Constant Field Values

DEFAULT_MAX_AGE

public static final int DEFAULT_MAX_AGE

See Also:

Constant Field Values

map

protected LRUCache<K,org.teiid.cache.DefaultCache.ExpirationEntry<K,V>> map

children

protected java.util.Map<java.lang.String,Cache> children

name

protected java.lang.String name

ttl

protected long ttl

expirationQueue

protected java.util.LinkedHashSet<org.teiid.cache.DefaultCache.ExpirationEntry<K,V>> expirationQueue

Constructor Detail

DefaultCache

public DefaultCache(java.lang.String name)

DefaultCache

public DefaultCache(java.lang.String name,
                    int maxEntries,
                    long ttl)

Method Detail

addListener

public void addListener(CacheListener listener)

clear

public void clear()

Description copied from interface: Cache

Removes all the keys and their values from the Cache

Specified by:

clear in interface Cache<K,V>

get

public V get(K key)

Description copied from interface: Cache

Retrieves the value for the given Key

Specified by:

get in interface Cache<K,V>

Parameters:

key - key under which value is to be retrieved.

Returns:

returns data held under specified key in cache

keySet

public java.util.Set<K> keySet()

put

public V put(K key,
             V value)

getExpirationTime

public static long getExpirationTime(long defaultTtl,
                                     java.lang.Long ttl)

put

public V put(K key,
             V value,
             java.lang.Long timeToLive)

Description copied from interface: Cache

Associates the specified value with the specified key this cache. If the cache previously contained a mapping for this key, the old value is replaced by the specified value.

Specified by:

put in interface Cache<K,V>

Parameters:

key - key with which the specified value is to be associated.

value - value to be associated with the specified key.

timeToLive - the time for this entry to live

Returns:

previous value associated with specified key, or null if there was no mapping for key. A null return can also indicate that the key previously associated null with the specified key, if the implementation supports null values.

remove

public V remove(K key)

Description copied from interface: Cache

Removes the value for this key from a Cache. Returns the value to which the Key previously associated , or null if the Key contained no mapping.

Specified by:

remove in interface Cache<K,V>

Parameters:

key - key whose mapping is to be removed

Returns:

previous value associated with specified Node's key

size

public int size()

Description copied from interface: Cache

Size of the cache

Specified by:

size in interface Cache<K,V>

Returns:

number of items in this cache

values

public java.util.Collection<V> values()

addChild

public Cache addChild(java.lang.String name)

getChild

public Cache getChild(java.lang.String name)

getChildren

public java.util.Collection<Cache> getChildren()

removeChild

public boolean removeChild(java.lang.String name)

getName

public java.lang.String getName()

Description copied from interface: Cache

Name of the cache node

Specified by:

getName in interface Cache<K,V>

Returns: