javax.persistence.spi

Class PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.LoaderReference

java.lang.Object

java.lang.ref.Reference<T>

java.lang.ref.WeakReference<java.lang.ClassLoader>

javax.persistence.spi.PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.LoaderReference

All Implemented Interfaces:

PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKeyReference

Enclosing class:

PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver

private class PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.LoaderReference
extends java.lang.ref.WeakReference<java.lang.ClassLoader>
implements PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKeyReference

References to class loaders are weak references, so that they can be garbage collected when nobody else is using them. The DefaultPersistenceProviderResolver class has no reason to keep class loaders alive.

Field Summary

Fields

Modifier and Type	Field and Description
private PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKey	cacheKey

Constructor Summary

Constructors

Constructor and Description
LoaderReference(java.lang.ClassLoader referent, java.lang.ref.ReferenceQueue q, PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKey key)

Method Summary

Modifier and Type	Method and Description
PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKey	getCacheKey()

Methods inherited from class java.lang.ref.Reference

clear, clone, enqueue, get, isEnqueued

Methods inherited from class java.lang.Object

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

Field Detail

cacheKey

private PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKey cacheKey

Constructor Detail

LoaderReference

LoaderReference(java.lang.ClassLoader referent,
                java.lang.ref.ReferenceQueue q,
                PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKey key)

Method Detail

getCacheKey

public PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKey getCacheKey()

Specified by:

getCacheKey in interface PersistenceProviderResolverHolder.DefaultPersistenceProviderResolver.CacheKeyReference