org.sadun.util.pool
Class EjbFactory

java.lang.Object
  org.sadun.util.pool.ObjectPool.BaseFactory
      org.sadun.util.pool.EjbFactory

All Implemented Interfaces:

ObjectPool.Factory, java.io.Serializable

public class EjbFactory

extends ObjectPool.BaseFactory

An ExtendedObjectPool.Factory implementation which uses reflection to create instances of enterprise java beans, looking up the home interface and invoking a proper create() method.

The JNDI name and the home interface class of the EJB to pool must be provided at construction.

After creation, objects can be optionally setup by an user-provided class implementing the Setup interface.

Version:

1.0

Author:

Cristiano Sadun

See Also:

Serialized Form

Field Summary

Fields inherited from class org.sadun.util.pool.ObjectPool.BaseFactory

cls, paramCls, params, ps

Constructor Summary

EjbFactory(java.lang.String jndiName, java.lang.Class remoteInterface)

EjbFactory(java.lang.String jndiName, java.lang.Class remoteInterface, java.lang.Object[] params)

EjbFactory(java.lang.String jndiName, java.lang.Class remoteInterface, java.lang.Object[] params, Setup ps)
Create a factory which makes use of a create() method on the home interface of an EJB with the given JNDI name and expecting the given parameters; after creation, the given Setup object will be used for post initialization.

Method Summary

java.lang.Object	create() Subclasses must implement the code which actually creates a new instance of the class to pool.
void	destroy(java.lang.Object obj) This implementation does not do anything.
javax.ejb.EJBHome	getEJBHome() Get the home interface used by this factory to produce Enterprise Java Beans
java.lang.String	getJNDIName() Return the JNDI name of the Enterprise Java Bean produced by this factory

Methods inherited from class org.sadun.util.pool.ObjectPool.BaseFactory

getProducedClass

Methods inherited from class java.lang.Object

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

Constructor Detail

EjbFactory

public EjbFactory(java.lang.String jndiName,
                  java.lang.Class remoteInterface,
                  java.lang.Object[] params,
                  Setup ps)

Create a factory which makes use of a create() method on the home interface of an EJB with the given JNDI name and expecting the given parameters; after creation, the given Setup object will be used for post initialization.

Parameters:

jndiName - the JNDI name of the EJB's home interface

remoteInterface - the remote interface of the EJB

params - the types of the parameters expected by the EJB's create() method, or null

ps - the Setup object to be used for post-construction setup, or null

EjbFactory

public EjbFactory(java.lang.String jndiName,
                  java.lang.Class remoteInterface,
                  java.lang.Object[] params)

EjbFactory

public EjbFactory(java.lang.String jndiName,
                  java.lang.Class remoteInterface)

Method Detail

create

public java.lang.Object create()
                        throws ObjectPool.ObjectPoolException

Description copied from class: ObjectPool.BaseFactory

Subclasses must implement the code which actually creates a new instance of the class to pool.

Specified by:

create in interface ObjectPool.Factory

Specified by:

create in class ObjectPool.BaseFactory

Throws:

ObjectPool.ObjectPoolException

destroy

public void destroy(java.lang.Object obj)

This implementation does not do anything.

Specified by:

destroy in interface ObjectPool.Factory

Overrides:

destroy in class ObjectPool.BaseFactory

getJNDIName

public java.lang.String getJNDIName()

Return the JNDI name of the Enterprise Java Bean produced by this factory

Returns:

the JNDI name of the Enterprise Java Bean produced by this factory

getEJBHome

public javax.ejb.EJBHome getEJBHome()

Get the home interface used by this factory to produce Enterprise Java Beans

Returns:

the home interface used by this factory to produce Enterprise Java Beans