ae.teletronics.cache

Class ChangingValueAndLevelMultiCache.Builder<K,V>

java.lang.Object

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

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

Type Parameters:

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

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

Enclosing class:

ChangingValueAndLevelMultiCache<K,V>

public static class ChangingValueAndLevelMultiCache.Builder<K,V>
extends ChangingValueCache.Builder<K,V>

Builder for building ChangingValueAndLevelMultiCache instances

Field Summary

Fields inherited from class ae.teletronics.cache.ChangingValueCache.Builder

instance

Constructor Summary

Constructors

Constructor and Description
Builder()

Method Summary

Modifier and Type	Method and Description
ChangingValueAndLevelMultiCache.Builder<K,V>	addCache(com.google.common.cache.Cache<K,V> cache, int levelFrom, int levelTo, String name) Add an additional internal cache to be used for cache-entries with level within a specific interval.
ChangingValueAndLevelMultiCache<K,V>	build() Build the ChangingValueAndLevelMultiCache instance
ChangingValueAndLevelMultiCache.Builder<K,V>	cache(com.google.common.cache.Cache<K,V> cache) See ChangingValueCache.Builder.cache(Cache).
protected ChangingValueAndLevelMultiCache<K,V>	createInstance()
ChangingValueAndLevelMultiCache.Builder<K,V>	defaultModifier(com.google.common.base.Function<V,V> modifier) See ChangingValueCache.Builder.defaultModifier(Function)
ChangingValueAndLevelMultiCache.Builder<K,V>	defaultNewCreator(com.google.common.base.Supplier<V> newCreator) See ChangingValueCache.Builder.defaultNewCreator(Supplier)
ChangingValueAndLevelMultiCache.Builder<K,V>	levelCalculator(ChangingValueAndLevelMultiCache.BiFunction<K,V,Integer> levelCalculator) Set the calculator used to calculate the level of a particular cache-entry

Methods inherited from class java.lang.Object

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

Constructor Detail

Builder

public Builder()

Method Detail

createInstance

protected ChangingValueAndLevelMultiCache<K,V> createInstance()

Overrides:

createInstance in class ChangingValueCache.Builder<K,V>

defaultNewCreator

public ChangingValueAndLevelMultiCache.Builder<K,V> defaultNewCreator(com.google.common.base.Supplier<V> newCreator)

See ChangingValueCache.Builder.defaultNewCreator(Supplier)

Overrides:

defaultNewCreator in class ChangingValueCache.Builder<K,V>

Parameters:

newCreator - Used to generate the new cache-value

Returns:

This builder

defaultModifier

public ChangingValueAndLevelMultiCache.Builder<K,V> defaultModifier(com.google.common.base.Function<V,V> modifier)

See ChangingValueCache.Builder.defaultModifier(Function)

Overrides:

defaultModifier in class ChangingValueCache.Builder<K,V>

Parameters:

modifier - Used to modify the cache-value

Returns:

This builder

cache

public ChangingValueAndLevelMultiCache.Builder<K,V> cache(com.google.common.cache.Cache<K,V> cache)

See ChangingValueCache.Builder.cache(Cache). This Guava cache is the internal cache used in case a cache-entry has a level that does not fit any of the explicitly defined level-intervals

Overrides:

cache in class ChangingValueCache.Builder<K,V>

Parameters:

cache - The Guava cache to be used internally

Returns:

This builder

levelCalculator

public ChangingValueAndLevelMultiCache.Builder<K,V> levelCalculator(ChangingValueAndLevelMultiCache.BiFunction<K,V,Integer> levelCalculator)

Set the calculator used to calculate the level of a particular cache-entry

Parameters:

levelCalculator - Given the cache-key and cache-level calculate the level of the cache-entry

Returns:

This builder

addCache

public ChangingValueAndLevelMultiCache.Builder<K,V> addCache(com.google.common.cache.Cache<K,V> cache,
                                                             int levelFrom,
                                                             int levelTo,
                                                             String name)

Add an additional internal cache to be used for cache-entries with level within a specific interval. When a cache-entry is modified so that its level changes to be within levelFrom (inclusive) and levelTo (inclusive), the cache-entry will be moved to the provided cache. If when level afterwards moves outside the interval, it will be removed from the provided cache and into another internal cache - either another cache added using this addCache method, or the default cache

Parameters:

cache - The Guava cache to be used internally

levelFrom - The lower boundary on cache-entry-level for this cache to be used

levelTo - The higher boundary on cache-entry-level for this cache to be used

name - A logical name for the cache

Returns:

This builder

build

public ChangingValueAndLevelMultiCache<K,V> build()

Build the ChangingValueAndLevelMultiCache instance

Overrides:

build in class ChangingValueCache.Builder<K,V>

Returns:

The built ChangingValueAndLevelMultiCache instance