org.opendaylight.genius.utils.cache

Class CacheUtil

java.lang.Object

org.opendaylight.genius.utils.cache.CacheUtil

Deprecated.

We now recommend you simply use your own new ConcurrentHashMap<>() instead.

@Deprecated
public final class CacheUtil
extends Object

Cache wannabe.

This class wanted to be Cache when it was grown up. Currently it's actually just a nested ConcurrentMap, and thus has fairly limited real value.

The usage of static methods here, instead of an (OSGi) "service" (dependency inject-able in tests!) makes it impossible to easily properly use code relying on this in component tests (as there would be no automatic reset between tests; you would have to manually destroyCache(String) @Before each test).

This class' "static" Singleton doesn't play nice with OSGi e.g. for hot reload.

This class' (necessary) use <?> generics causes @SuppressWarnings("unchecked") when used.

Perhaps you would like to use Google Guava's simple Caches, if not a full blown JSR 107 javax.cache (JCache) implementation, such as Infinispan or Ehcache, instead of this class?

Author:

unascribed (Ericsson India?) - original code, Michael Vorburger.ch - JavaDoc

Method Summary

Modifier and Type	Method and Description
static void	createCache(String cacheName) Deprecated.
static void	destroyCache(String cacheName) Deprecated.
static ConcurrentMap<?,?>	getCache(String cacheName) Deprecated.
static boolean	isCacheValid(String cacheName) Deprecated.

Methods inherited from class java.lang.Object

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

Method Detail

getCache

public static ConcurrentMap<?,?> getCache(String cacheName)

Deprecated.

createCache

public static void createCache(String cacheName)

Deprecated.

isCacheValid

public static boolean isCacheValid(String cacheName)

Deprecated.

destroyCache

public static void destroyCache(String cacheName)

Deprecated.