org.perfectjpattern.jee.integration.dao
Class EntityManagerAdapter

java.lang.Object
  org.perfectjpattern.core.structural.AbstractSurrogate<T,A>
      org.perfectjpattern.core.structural.adapter.Adapter<ISession,javax.persistence.EntityManager>
          org.perfectjpattern.jee.integration.dao.EntityManagerAdapter

All Implemented Interfaces:

InvocationHandler, IAdapter<ISession,javax.persistence.EntityManager>, ISurrogate<ISession>

public final class EntityManagerAdapter
extends Adapter<ISession,javax.persistence.EntityManager>

Adapts JPA's EntityManager to the JPA implementation-free PerfectJPattern's ISession definition

Version:

$Revision: 1.0 $Date: Feb 10, 2009 8:26:06 PM $

Author:

Giovanni Azua

Constructor Summary

EntityManagerAdapter(javax.persistence.EntityManager anAdaptee)
Constructs a EntityManagerAdapter from the Adaptee EntityManager instance

Method Summary

IQuery	createNativeQuery(String aSqlString, Class<?> aPersistentClass)
IQuery	createQuery(String aSqlString)
ITransaction	getTransaction()
protected Object	invokeUnderlying(Method aMethod, Object[] anArguments) Returns the result of the Method invocation.
void	update(Object anObject)

Methods inherited from class org.perfectjpattern.core.structural.adapter.Adapter

getAdaptee, getTarget, setAdaptingStrategy

Methods inherited from class org.perfectjpattern.core.structural.AbstractSurrogate

equals, getComponent, getComponentClass, getUnderlying, hashCode, invoke

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.perfectjpattern.core.api.structural.ISurrogate

getComponent

Methods inherited from interface java.lang.reflect.InvocationHandler

invoke

Constructor Detail

EntityManagerAdapter

public EntityManagerAdapter(javax.persistence.EntityManager anAdaptee)
                     throws IllegalArgumentException

Constructs a EntityManagerAdapter from the Adaptee EntityManager instance

Parameters:

anAdaptee - The Adaptee EntityManager

Throws:

IllegalArgumentException - 'anAdaptee' must not be null

Method Detail

invokeUnderlying

protected Object invokeUnderlying(Method aMethod,
                                  Object[] anArguments)
                           throws Throwable

Returns the result of the Method invocation. This method has two main purposes:

• Provides facility to invoke a method on the actual Underlying
• Concrete surrogate implementations that override this method have a single point to control access to the actual Underlying method invokation.

Overrides:

invokeUnderlying in class Adapter<ISession,javax.persistence.EntityManager>

Parameters:

aMethod - Method to invoke

anArguments - Array of input arguments for the Method to invoke

Returns:

result of the Method invocation

Throws:

Throwable

update

public void update(Object anObject)

createQuery

public IQuery createQuery(String aSqlString)

createNativeQuery

public IQuery createNativeQuery(String aSqlString,
                                Class<?> aPersistentClass)

getTransaction

public ITransaction getTransaction()