org.apache.deltaspike.core.util

Class ParentExtensionStorage

java.lang.Object

org.apache.deltaspike.core.util.ParentExtensionStorage

public final class ParentExtensionStorage
extends Object

Support for Containers with 'hierarchic BeanManagers' This is mostly useful for EAR applications. Some EE Container scan the common shared EAR lib path and reuse this information for the webapps in the EAR. This is actually the only approach a container can do to prevent mem leaks and side effects spreading to different webapps. Of course this also means that the webapps get their own (different) instances of an Extension. To acknowledge this solution we provide a mechanism to lookup 'parent Extensions' which is very similar to handling parent ClassLoaders. Please note that you need to enable this handling if you are running DeltaSpike in an EAR on a container which supports parent Extensions. You can do that by settting "deltaspike.parent.extension.enabled" to "e;true"e; All your Extension has to do is to register itself in BeforeBeanDiscovery. Later at boot time the Extension can lookup it's parent Extension instance and e.g. check which classes got scanned in the parent ClassLoader. The ExtensionInfo automatically gets removed if the webapp gets undeployed.

See Also:

CoreBaseConfig.ParentExtensionCustomization

Method Summary

Modifier and Type	Method and Description
static void	addExtension(javax.enterprise.inject.spi.Extension extension) Add info about an Extension to our storage This method is usually called during boostrap via @Observes BeforeBeanDiscovery.
static <T extends javax.enterprise.inject.spi.Extension> T	getParentExtension(javax.enterprise.inject.spi.Extension extension)

Methods inherited from class java.lang.Object

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

Method Detail

addExtension

public static void addExtension(javax.enterprise.inject.spi.Extension extension)

Add info about an Extension to our storage This method is usually called during boostrap via @Observes BeforeBeanDiscovery.

getParentExtension

public static <T extends javax.enterprise.inject.spi.Extension> T getParentExtension(javax.enterprise.inject.spi.Extension extension)

Returns:

the Extension from the same type but registered in a hierarchic 'parent' BeanManager