Package org.jdbi.v3.core.cache.internal

Class DefaultJdbiCache<K,V>

java.lang.Object

org.jdbi.v3.core.cache.internal.DefaultJdbiCache<K,V>

All Implemented Interfaces:

JdbiCache<K,V>

final class DefaultJdbiCache<K,V>
extends java.lang.Object
implements JdbiCache<K,V>

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.concurrent.ConcurrentMap<K,DoubleLinkedList.Node<K,V>>	cache
private JdbiCacheLoader<K,DoubleLinkedList.Node<K,V>>	cacheLoader
private DoubleLinkedList<K,V>	expungeQueue
private int	maxSize

Constructor Summary

Constructors

Constructor	Description
DefaultJdbiCache(DefaultJdbiCacheBuilder builder, JdbiCacheLoader<K,V> cacheLoader)

Method Summary

Modifier and Type	Method	Description
private void	expunge()
V	get(K key)	Returns the cached value for a key.
DefaultJdbiCacheStats	getStats()	Return implementation specific statistics for the cache object.
V	getWithLoader(K key, JdbiCacheLoader<K,V> loader)	Returns a cached value for a key.
private void	refresh(DoubleLinkedList.Node<K,V> node)
private JdbiCacheLoader<K,DoubleLinkedList.Node<K,V>>	wrapLoader(JdbiCacheLoader<K,V> delegate)

Methods inherited from class java.lang.Object

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

Field Detail

cache

private final java.util.concurrent.ConcurrentMap<K,DoubleLinkedList.Node<K,V>> cache

expungeQueue

private final DoubleLinkedList<K,V> expungeQueue

cacheLoader

private final JdbiCacheLoader<K,DoubleLinkedList.Node<K,V>> cacheLoader

maxSize

private final int maxSize

Constructor Detail

DefaultJdbiCache

DefaultJdbiCache(DefaultJdbiCacheBuilder builder,
                 JdbiCacheLoader<K,V> cacheLoader)

Method Detail

get

public V get(K key)

Description copied from interface: JdbiCache

Returns the cached value for a key.

Specified by:

get in interface JdbiCache<K,V>

Parameters:

key - The key value. Must not be null.

Returns:

The cached value or null if no value was cached.

getWithLoader

public V getWithLoader(K key,
                       JdbiCacheLoader<K,V> loader)

Description copied from interface: JdbiCache

Returns a cached value for a key. If no value is cached, create a new value using the provided cache loader.

Specified by:

getWithLoader in interface JdbiCache<K,V>

Parameters:

key - The key value. Must not be null.

loader - A JdbiCacheLoader implementation. May be called with the provided key value.

Returns:

The cached value or null if no value was cached.

getStats

public DefaultJdbiCacheStats getStats()

Description copied from interface: JdbiCache

Return implementation specific statistics for the cache object. This can be used to expose statistic information about the underlying implementation.

Specified by:

getStats in interface JdbiCache<K,V>

Returns:

An implementation specific object.

wrapLoader

private JdbiCacheLoader<K,DoubleLinkedList.Node<K,V>> wrapLoader(JdbiCacheLoader<K,V> delegate)

refresh

private void refresh(DoubleLinkedList.Node<K,V> node)

expunge

private void expunge()