Package org.jdbi.v3.cache.noop

Class NoopCache<K,V>

java.lang.Object

org.jdbi.v3.cache.noop.NoopCache<K,V>

Type Parameters:

K - The key type.

V - The value type.

All Implemented Interfaces:

JdbiCache<K,V>

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

A no operation cache implementation.

Field Summary

Fields

Modifier and Type	Field	Description
private JdbiCacheLoader<K,V>	cacheLoader
(package private) static java.lang.Object	NOOP_CACHE_STATS

Constructor Summary

Constructors

Constructor	Description
NoopCache(JdbiCacheLoader<K,V> cacheLoader)

Method Summary

Modifier and Type	Method	Description
static JdbiCacheBuilder	builder()	Returns a new JdbiCacheBuilder which can be used to construct the internal caches.
V	get(K key)	Returns the cached value for a key.
java.lang.Object	getStats()	Return implementation specific statistics for the cache object.
V	getWithLoader(K key, JdbiCacheLoader<K,V> loader)	Returns a cached value for a key.

Methods inherited from class java.lang.Object

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

Field Detail

NOOP_CACHE_STATS

static final java.lang.Object NOOP_CACHE_STATS

cacheLoader

private final JdbiCacheLoader<K,V> cacheLoader

Constructor Detail

NoopCache

NoopCache(JdbiCacheLoader<K,V> cacheLoader)

Method Detail

builder

public static JdbiCacheBuilder builder()

Returns a new JdbiCacheBuilder which can be used to construct the internal caches.

Returns:

A JdbiCacheBuilder instance.

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 java.lang.Object 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.