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Java Source Code / Java Documentation » J2EE » spring framework 2.0.6 » org.springframework.ejb.support

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.springframework.ejb.support .AbstractEnterpriseBean

org.springframework.ejb.support .AbstractMessageDrivenBean

All known Subclasses:   org.springframework.ejb.support .AbstractJmsMessageDrivenBean,
AbstractMessageDrivenBean
abstract public class AbstractMessageDrivenBean extends AbstractEnterpriseBean implements MessageDrivenBean(Code)
Convenient superclass for MDBs. Doesn't require JMS, as EJB 2.1 MDBs are no longer JMS-specific; see the AbstractJmsMessageDrivenBean subclass.
This class ensures that subclasses have access to the MessageDrivenContext provided by the EJB container, and implement a no-arg ejbCreate() method as required by the EJB specification. This ejbCreate() method loads a BeanFactory, before invoking the onEjbCreate() method, which is supposed to contain subclass-specific initialization.
NB: We cannot use final methods to implement EJB API methods, as this violates the EJB specification. However, there should be no need to override the setMessageDrivenContext or ejbCreate() methods.
author:
   Rod Johnson

Field Summary
final protected Log logger


Method Summary
public void ejbCreate()
     Lifecycle method required by the EJB specification but not the MessageDrivenBean interface.
final protected MessageDrivenContext getMessageDrivenContext()
     Convenience method for subclasses to use.
abstract protected void onEjbCreate()
     Subclasses must implement this method to do any initialization they would otherwise have done in an ejbCreate() method.
public void setMessageDrivenContext(MessageDrivenContext messageDrivenContext)
     Required lifecycle method.

Field Detail
logger
final protected Log logger(Code)
Logger available to subclasses

Method Detail
ejbCreate
public void ejbCreate()(Code)
Lifecycle method required by the EJB specification but not the MessageDrivenBean interface. This implementation loads the BeanFactory.
Don't override it (although it can't be made final): code initialization in onEjbCreate(), which is called when the BeanFactory is available.
Unfortunately we can't load the BeanFactory in setSessionContext(), as resource manager access isn't permitted and the BeanFactory may require it.

getMessageDrivenContext
final protected MessageDrivenContext getMessageDrivenContext()(Code)
Convenience method for subclasses to use. the MessageDrivenContext passed to this EJB by the EJB container

onEjbCreate
abstract protected void onEjbCreate()(Code)
Subclasses must implement this method to do any initialization they would otherwise have done in an ejbCreate() method. In contrast to ejbCreate(), the BeanFactory will have been loaded here.
The same restrictions apply to the work of this method as to an ejbCreate() method.

setMessageDrivenContext
public void setMessageDrivenContext(MessageDrivenContext messageDrivenContext)(Code)
Required lifecycle method. Sets the MessageDriven context.
Parameters:
  messageDrivenContext - MessageDrivenContext

Fields inherited from org.springframework.ejb.support.AbstractEnterpriseBean
final public static String BEAN_FACTORY_PATH_ENVIRONMENT_KEY(Code)(Java Doc)

Methods inherited from org.springframework.ejb.support.AbstractEnterpriseBean
public void ejbRemove()(Code)(Java Doc)
protected BeanFactory getBeanFactory()(Code)(Java Doc)
void loadBeanFactory() throws BeansException(Code)(Java Doc)
protected void onEjbRemove()(Code)(Java Doc)
public void setBeanFactoryLocator(BeanFactoryLocator beanFactoryLocator)(Code)(Java Doc)
public void setBeanFactoryLocatorKey(String factoryKey)(Code)(Java Doc)
void unloadBeanFactory() throws FatalBeanException(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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