Package org.apache.webbeans.el

Class ELContextStore

java.lang.Object

org.apache.webbeans.el.ELContextStore

public final class ELContextStore
extends Object

The ELContextStore serves two different purposes

1. Store Dependent objects of the same invocation. See spec section 6.4.3. Dependent pseudo-scope and Unified EL. This gets cleaned up with destroyDependents() after the whole Expression got scanned.
2. Store the Contextual Reference for each name per request thread. This is a performance tuning strategy, because creating a NormalScopedBeanInterceptorHandler for each and every EL call is very expensive. This needs to be cleaned up with destroyELContextStore() at the end of each request.

Method Summary

Modifier and Type	Method	Description
void	addDependent(jakarta.enterprise.inject.spi.Bean<?> bean, Object dependent, jakarta.enterprise.context.spi.CreationalContext<?> creationalContext)	Add a @Dependent scoped bean for later use in the same EL.
void	addNormalScoped(String beanName, Object contextualInstance)	We cache resolved @NormalScoped bean proxies on the same for speeding up EL.
void	destroyDependents()	This method have to be called after the EL parsing to cleanup the cache for @Dependent scoped beans.
void	destroyELContextStore()	This needs to be called at the end of each request.
Object	findBeanByName(String name)
Object	getDependent(jakarta.enterprise.inject.spi.Bean<?> bean)
static ELContextStore	getInstance(boolean createIfNotExist)

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static ELContextStore getInstance(boolean createIfNotExist)

Parameters:

createIfNotExist - if false doesn't create a new ELContextStore if none exists

Returns:

findBeanByName

public Object findBeanByName(String name)

addDependent

public void addDependent(jakarta.enterprise.inject.spi.Bean<?> bean,
                         Object dependent,
                         jakarta.enterprise.context.spi.CreationalContext<?> creationalContext)

Add a @Dependent scoped bean for later use in the same EL. See spec section 6.4.3. Dependent pseudo-scope and Unified EL.

Parameters:

bean -

dependent -

creationalContext -

getDependent

public Object getDependent(jakarta.enterprise.inject.spi.Bean<?> bean)

Parameters:

bean -

Returns:

the previously used dependent bean or null

See Also:

addDependent(Bean, Object, CreationalContext)

addNormalScoped

public void addNormalScoped(String beanName,
                            Object contextualInstance)

We cache resolved @NormalScoped bean proxies on the same for speeding up EL.

Parameters:

beanName -

destroyDependents

public void destroyDependents()

This method have to be called after the EL parsing to cleanup the cache for @Dependent scoped beans.

destroyELContextStore

public void destroyELContextStore()

This needs to be called at the end of each request. Because after the request ends, a server might reuse the Thread to serve other requests (from other WebApps)