org.wamblee.test.transactions

Class TransactionProxyFactory<T>

java.lang.Object

org.wamblee.test.transactions.TransactionProxyFactory<T>

public class TransactionProxyFactory<T>
extends Object

This utility makes sure that each invocation on a certain interface is carried out within a JPA unit of work. Note that this is equivalent to the sementics of a requiresNew transaction attribute. Use getTransactionScopedEntityManager() to get the transaction scoped entity manager to pass to services. For example:

     JpaBuilder builder = ...
     TransactionProxyFactory factory = new TransactionProxyFactory(
           builder, Service.class);
     Service service = new JpaService(factory.getTransactionScopedEntityManager());
     Service proxy = factory.getProxy(service);
     proxy.executeMethod(...);
 

The above example executes the executeMethod() call on the service object within an active transaction. In the constructor of the service a transaction scoped entity manager is passed.

Author:

Erik Brakkee

Constructor Summary

Constructors

Constructor and Description
TransactionProxyFactory(JpaBuilder aJpaBuilder, Class<T> aClass) Constructs the transaction proxy.

Method Summary

Modifier and Type	Method and Description
T	getProxy(T aService)
javax.persistence.EntityManager	getTransactionScopedEntityManager()

Methods inherited from class java.lang.Object

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

Constructor Detail

TransactionProxyFactory

public TransactionProxyFactory(JpaBuilder aJpaBuilder,
                               Class<T> aClass)

Constructs the transaction proxy.

Parameters:

aJpaBuilder -

Method Detail

getTransactionScopedEntityManager

public javax.persistence.EntityManager getTransactionScopedEntityManager()

getProxy

public T getProxy(T aService)