SessionBeanInjectionPoint (Weld Parent 2.3.5.Final API)

java.lang.Object
- org.jboss.weld.ejb.SessionBeanInjectionPoint

```
public class SessionBeanInjectionPoint
extends Object
```
The spec requires that an InjectionPoint of a session bean returns:
- a Bean object representing the session bean if the session bean is a contextual instance (obtained using Inject)
- null if the session bean is a non-contextual instance obtained using @EJB or from JNDI
Each time a contextual instance of a session bean is created we add its bean class to a thread local collection. The class is removed from the collection after instance creation.

If an InjectionPoint of a session bean is about to be injected using InjectionPointBean and the session bean class is present in the thread local collection (indicating that it is a contextual instance), we leave the InjectionPoint untouched and inject it. Otherwise, we wrap the InjectionPoint within SessionBeanInjectionPoint.NonContextualSessionBeanInjectionPoint which always returns null from getBean().

The only known limitation of this approach is that if the same session bean is used both in its contextual and non-contextual form within a single dependency chain (non-contextual instance of Foo injecting another Foo instance using Inject), the behavior will not be reliable.
Author:

Jozef Hartinger

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static void`	`registerContextualInstance(org.jboss.weld.ejb.spi.EjbDescriptor<?> descriptor)`	Indicates that a contextual instance of a session bean is about to be constructed.
`static void`	`unregisterContextualInstance(org.jboss.weld.ejb.spi.EjbDescriptor<?> descriptor)`	Indicates that contextual session bean instance has been constructed.
`static javax.enterprise.inject.spi.InjectionPoint`	`wrapIfNecessary(javax.enterprise.inject.spi.InjectionPoint ip)`	Returns the `InjectionPoint` passed in as a parameter if this `InjectionPoint` belongs to a contextual instance of a session bean.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - registerContextualInstance
```
public static void registerContextualInstance(org.jboss.weld.ejb.spi.EjbDescriptor<?> descriptor)
```
    Indicates that a contextual instance of a session bean is about to be constructed.
  - unregisterContextualInstance
```
public static void unregisterContextualInstance(org.jboss.weld.ejb.spi.EjbDescriptor<?> descriptor)
```
    Indicates that contextual session bean instance has been constructed.
  - wrapIfNecessary
```
public static javax.enterprise.inject.spi.InjectionPoint wrapIfNecessary(javax.enterprise.inject.spi.InjectionPoint ip)
```
    Returns the InjectionPoint passed in as a parameter if this InjectionPoint belongs to a contextual instance of a session bean. Otherwise, the method wraps the InjectionPoint to guarantee that getBean() always returns null.