add per PU cache of the new temp classloader returned from PersistenceUnitMetadataImpl.getNewTempClassLoader() -------------------------------------------------------------------------------------------------------------- Key: WFLY-7367 URL: https://issues.jboss.org/browse/WFLY-7367 Project: WildFly Issue Type: Enhancement Components: JPA / Hibernate Reporter: Scott Marlow Assignee: Scott Marlow Ensure that the cached temp classloader reference is cleared at undeploy time, which is when the org.jboss.as.jpa.hibernate4.HibernateAnnotationScanner#CLASSES_IN_JAR_CACHE are also cleared. Javadoc description from [http://docs.oracle.com/javaee/7/api/javax/persistence/spi/PersistenceUnit...] {quote} ClassLoader getNewTempClassLoader() Return a new instance of a ClassLoader that the provider may use to temporarily load any classes, resources, or open URLs. The scope and classpath of this loader is exactly the same as that of the loader returned by getClassLoader(). None of the classes loaded by this class loader will be visible to application components. The provider may only use this ClassLoader within the scope of the PersistenceProvider.createContainerEntityManagerFactory(javax.persistence.spi.PersistenceUnitInfo, java.util.Map) call. Returns: temporary ClassLoader with same visibility as current loader {quote}