ae.teletronics.cache

Class ChangingValueAndLevelMultiCache<K,V>

java.lang.Object

ae.teletronics.cache.ChangingValueCache<K,V>

ae.teletronics.cache.ChangingValueAndLevelMultiCache<K,V>

Type Parameters:

K - Type of the cache-key

V - Type of the cache-value

@ThreadSafe
public class ChangingValueAndLevelMultiCache<K,V>
extends ChangingValueCache<K,V>

Same as ChangingValueCache, but with prioritization of the cache-entries. Cache-entries are given a priority (level) and non-overlapping intervals of levels define different prioritizations. When a cache-value is modified the level and hence the prioritization of the cache-entry can change

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ChangingValueAndLevelMultiCache.BiFunction<T,U,R>
static class	ChangingValueAndLevelMultiCache.Builder<K,V> Builder for building ChangingValueAndLevelMultiCache instances
static class	ChangingValueAndLevelMultiCache.Interval

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<ChangingValueAndLevelMultiCache.Interval,com.google.common.cache.Cache<K,V>>	caches
protected ChangingValueAndLevelMultiCache.BiFunction<K,V,Integer>	levelCalculator
protected Map<com.google.common.cache.Cache<K,V>,String>	names

Fields inherited from class ae.teletronics.cache.ChangingValueCache

alreadyWorkingOn, cache, defaultModifier, defaultNewCreator, newOrMovingCacheEntryInterner

Constructor Summary

Constructors

Constructor and Description
ChangingValueAndLevelMultiCache()

Method Summary

Modifier and Type	Method and Description
static <K,V> ChangingValueAndLevelMultiCache.Builder<K,V>	builder() Get a builder for building a ChangingValueAndLevelMultiCache instance
protected com.google.common.cache.Cache<K,V>	cacheForLevel(int level)
protected Pair<com.google.common.cache.Cache<K,V>,V>	createCacheAndValuePair(com.google.common.cache.Cache<K,V> cache, V value)
protected Collection<com.google.common.cache.Cache<K,V>>	getAllCaches()
Pair<com.google.common.cache.Cache<K,V>,V>	getCacheAndValueIfPresent(K key) Get a cache-value and the internal cache it currently lives in of a cache-entry with a provided key
protected V	modifyImpl(K key, com.google.common.base.Supplier<V> newCreator, com.google.common.base.Function<V,V> modifier, boolean createIfNotExists, boolean supportRecursiveCalls)

Methods inherited from class ae.teletronics.cache.ChangingValueCache

getAddIfNotPresent, getAddIfNotPresent, getIfPresent, modify, modify, modify, modify, modify, modifyAll, modifyAll, modifyAll, size

Methods inherited from class java.lang.Object

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

Field Detail

caches

protected Map<ChangingValueAndLevelMultiCache.Interval,com.google.common.cache.Cache<K,V>> caches

names

protected Map<com.google.common.cache.Cache<K,V>,String> names

levelCalculator

protected ChangingValueAndLevelMultiCache.BiFunction<K,V,Integer> levelCalculator

Constructor Detail

ChangingValueAndLevelMultiCache

public ChangingValueAndLevelMultiCache()

Method Detail

builder

public static <K,V> ChangingValueAndLevelMultiCache.Builder<K,V> builder()

Get a builder for building a ChangingValueAndLevelMultiCache instance

Type Parameters:

K - Type of the cache-key of the built cache

V - Type of the cache-value of the built cache

Returns:

The builder to be used

modifyImpl

protected V modifyImpl(K key,
                       com.google.common.base.Supplier<V> newCreator,
                       com.google.common.base.Function<V,V> modifier,
                       boolean createIfNotExists,
                       boolean supportRecursiveCalls)

Overrides:

modifyImpl in class ChangingValueCache<K,V>

getAllCaches

protected Collection<com.google.common.cache.Cache<K,V>> getAllCaches()

Overrides:

getAllCaches in class ChangingValueCache<K,V>

getCacheAndValueIfPresent

public Pair<com.google.common.cache.Cache<K,V>,V> getCacheAndValueIfPresent(K key)

Get a cache-value and the internal cache it currently lives in of a cache-entry with a provided key

Parameters:

key - The key of the cache-entry

Returns:

The cache-value and the internal cache (or null if not present in cache)

createCacheAndValuePair

protected Pair<com.google.common.cache.Cache<K,V>,V> createCacheAndValuePair(com.google.common.cache.Cache<K,V> cache,
                                                                             V value)

cacheForLevel

protected com.google.common.cache.Cache<K,V> cacheForLevel(int level)