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SingletonStatelessSessionInstancePool (JBoss Server API) - JBoss 4.0.1 sp1 server API Documentation 英文版文档

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org.jboss.ejb.plugins
Class SingletonStatelessSessionInstancePool

java.lang.Object
  org.jboss.ejb.plugins.SingletonStatelessSessionInstancePool

All Implemented Interfaces:

AllowedOperationsFlags, ContainerPlugin, InstancePool, org.jboss.system.Service, XmlLoadable

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public class SingletonStatelessSessionInstancePool

extends Object

implements InstancePool, XmlLoadable

Singleton pool for session beans. This lets you have singletons in EJB!

Version:

$Revision: 1.23 $

Author:

Rickard 锟絙erg

See Also:

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Field Summary

 

Fields inherited from interface org.jboss.ejb.AllowedOperationsFlags

IN_AFTER_BEGIN, IN_AFTER_COMPLETION, IN_BEFORE_COMPLETION, IN_BUSINESS_METHOD, IN_EJB_ACTIVATE, IN_EJB_CREATE, IN_EJB_FIND, IN_EJB_HOME, IN_EJB_LOAD, IN_EJB_PASSIVATE, IN_EJB_POST_CREATE, IN_EJB_REMOVE, IN_EJB_STORE, IN_EJB_TIMEOUT, IN_INTERCEPTOR_METHOD, IN_SERVICE_ENDPOINT_METHOD, IN_SET_ENTITY_CONTEXT, IN_SET_MESSAGE_DRIVEN_CONTEXT, IN_SET_SESSION_CONTEXT, IN_UNSET_ENTITY_CONTEXT, NOT_ALLOWED

 

Constructor Summary

SingletonStatelessSessionInstancePool()

 

Method Summary
void	add()           Add a instance in the pool
void	create()
protected  EnterpriseContext	create(Object instance, Container con)
void	destroy()
void	discard(EnterpriseContext ctx)           Discard an anonymous instance after invocation.
void	free(EnterpriseContext ctx)           Return an instance after invocation.
EnterpriseContext	get()           Get the singleton instance
int	getCurrentSize()           Return the size of the pool.
int	getMaxSize()           Get the maximum size of the pool.
void	importXml(Element element)
void	setContainer(Container c)           Set the callback to the container.
void	start()
void	stop()

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

SingletonStatelessSessionInstancePool

public SingletonStatelessSessionInstancePool()

Method Detail

setContainer

public void setContainer(Container c)

Set the callback to the container. This is for initialization. The pool may extract the configuration from the container.

Specified by:

setContainer in interface ContainerPlugin

Parameters:

c -

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create

public void create()
            throws Exception

Specified by:

create in interface org.jboss.system.Service

Throws:

Exception

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start

public void start()
           throws Exception

Specified by:

start in interface org.jboss.system.Service

Throws:

Exception

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stop

public void stop()

Specified by:

stop in interface org.jboss.system.Service

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destroy

public void destroy()

Specified by:

destroy in interface org.jboss.system.Service

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get

public EnterpriseContext get()
                      throws Exception

Get the singleton instance

Specified by:

get in interface InstancePool

Returns:

Context /w instance

Throws:

Exception

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free

public void free(EnterpriseContext ctx)

Return an instance after invocation. Called in 2 cases: a) Done with finder method b) Just removed

Specified by:

free in interface InstancePool

Parameters:

ctx -

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discard

public void discard(EnterpriseContext ctx)

Description copied from interface: InstancePool

Discard an anonymous instance after invocation. This is called if the instance should not be reused, perhaps due to some exception being thrown from it.

Specified by:

discard in interface InstancePool

Parameters:

ctx - The context to discard.

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add

public void add()
         throws Exception

Add a instance in the pool

Throws:

Exception

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getCurrentSize

public int getCurrentSize()

Description copied from interface: InstancePool

Return the size of the pool.

Specified by:

getCurrentSize in interface InstancePool

Returns:

the size of the pool.

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getMaxSize

public int getMaxSize()

Description copied from interface: InstancePool

Get the maximum size of the pool.

Specified by:

getMaxSize in interface InstancePool

Returns:

the size of the pool.

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importXml

public void importXml(Element element)
               throws org.jboss.deployment.DeploymentException

Specified by:

importXml in interface XmlLoadable

Throws:

org.jboss.deployment.DeploymentException

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create

protected EnterpriseContext create(Object instance,
                                   Container con)
                            throws Exception

Throws:

Exception

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