Package com.atlassian.bamboo.utils.scopedcaches

Class ThreadScopedCaches

java.lang.Object

com.atlassian.bamboo.utils.scopedcaches.ThreadScopedCaches

Direct Known Subclasses:

ThreadScopedCaches

public class ThreadScopedCaches
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	ThreadScopedCaches.Key<K,V>	Interface for keys for this cache.

Constructor Summary

Constructors

Constructor	Description
ThreadScopedCaches()

Method Summary

Modifier and Type	Method	Description
static <K,V> V	getValue(ThreadScopedCaches.Key<K,V> cacheKey, K key, Supplier<? extends V> supplier)	Returns the value called by supplier.get or a previously cached value.
static void	inCachingScope(Runnable runnable)
static <T> T	inCachingScope(Supplier<T> supplier)
static <K,V> ThreadScopedCaches.Key<K,V>	makeKey(Class<?> aClass)	The returned keys rely on identity comparison.

Methods inherited from class java.lang.Object

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

Constructor Detail

ThreadScopedCaches

public ThreadScopedCaches()

Method Detail

getValue

public static <K,V> V getValue(ThreadScopedCaches.Key<K,V> cacheKey,
                                     K key,
                                     Supplier<? extends V> supplier)

Returns the value called by supplier.get or a previously cached value. The cache is scoped to the current request and will be cleared at the end of the request. No caching will apply if invoked outside a request. No caching will apply within a mutative request.

Parameters:

cacheKey - a key to identify the cache

key - a sub-key to cache the specific value under

supplier - will be called to return the object the

Returns:

the result of supplier.get()

Throws:

RuntimeException - if thrown by supplier.get()

inCachingScope

public static void inCachingScope(Runnable runnable)

inCachingScope

public static <T> T inCachingScope(Supplier<T> supplier)

makeKey

public static <K,V> ThreadScopedCaches.Key<K,V> makeKey(Class<?> aClass)

The returned keys rely on identity comparison. You can have multiple such keys per class but each Key instance creates a separate cache.