org.jboss.weld.util.cache

Class LoadingCacheUtils

java.lang.Object

org.jboss.weld.util.cache.LoadingCacheUtils

public final class LoadingCacheUtils
extends Object

Guava loading cache utilities.

Author:

Martin Kouba

Method Summary

Methods

Modifier and Type	Method and Description
static <K,V> V	getCacheValue(com.google.common.cache.LoadingCache<K,V> cache, K key) Get the cache value for the given key.
static <K,V> V	getCacheValue(com.google.common.cache.LoadingCache<K,V> cache, K key, boolean wrapExecutionProblem) Get the cache value for the given key.
static <T,K,V> T	getCastCacheValue(com.google.common.cache.LoadingCache<K,V> cache, Object key) Get and cast the cache value for the given key.
static <T,K,V> T	getCastCacheValue(com.google.common.cache.LoadingCache<K,V> cache, Object key, boolean wrapExecutionProblem) Get and cast the cache value for the given key.

Methods inherited from class java.lang.Object

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

Method Detail

getCacheValue

public static <K,V> V getCacheValue(com.google.common.cache.LoadingCache<K,V> cache,
                    K key)

Get the cache value for the given key. Wrap possible ExecutionException and UncheckedExecutionException.

Type Parameters:

K - Key type

V - Value type

Parameters:

cache -

key -

Returns:

the cache value

Throws:

WeldException - if an expection is thrown while loading the value

com.google.common.util.concurrent.ExecutionError - if an error is thrown while loading the value

getCacheValue

public static <K,V> V getCacheValue(com.google.common.cache.LoadingCache<K,V> cache,
                    K key,
                    boolean wrapExecutionProblem)

Get the cache value for the given key. Wrap possible ExecutionException and UncheckedExecutionException.

Type Parameters:

K - Key type

V - Value type

Parameters:

cache -

key -

wrapExecutionProblem - If true, wrap possible ExecutionException and UncheckedExecutionException, otherwise UncheckedExecutionException may be thrown when execution problem occurs

Returns:

the cache value

Throws:

com.google.common.util.concurrent.ExecutionError - if an error is thrown while loading the value

getCastCacheValue

public static <T,K,V> T getCastCacheValue(com.google.common.cache.LoadingCache<K,V> cache,
                          Object key)

Get and cast the cache value for the given key.

Type Parameters:

T - Required type

K - Key type

V - Value type

Parameters:

cache -

key -

Returns:

the cache value cast to the required type

Throws:

WeldException - if an expection is thrown while loading the value

com.google.common.util.concurrent.ExecutionError - if an error is thrown while loading the value

getCastCacheValue

public static <T,K,V> T getCastCacheValue(com.google.common.cache.LoadingCache<K,V> cache,
                          Object key,
                          boolean wrapExecutionProblem)

Get and cast the cache value for the given key.

Type Parameters:

T - Required type

K - Key type

V - Value type

Parameters:

cache -

key -

wrapExecutionProblem - If true, wrap possible ExecutionException and UncheckedExecutionException, otherwise UncheckedExecutionException may be thrown when execution problem occurs

Returns:

the cache value cast to the required type

Throws:

com.google.common.util.concurrent.ExecutionError - if an error is thrown while loading the value