Package com.broadleafcommerce.common.jpa.data.entitymanager

Class TransactionSynchronizationManagerAdvice

java.lang.Object

com.broadleafcommerce.common.jpa.data.entitymanager.TransactionSynchronizationManagerAdvice

public final class TransactionSynchronizationManagerAdvice
extends Object

Simple AOP around advice for TransactionSynchronizationManager. It is a static utility class in Spring for managing resources in a transaction. Since it is not a bean, it is more sane and less brittle to consider customization from an AOP perspective, rather than attempt to unwind a large call hierarchy to affect similar change.

With Broadleaf data routing, we have occurrences of an EntityManagerFactory backed by a fully routed datasource, and an EntityManagerFactory backed by a traditional datasource targeted at a specific database/schema. Either are valid, and for the purposes of transactional thread binding, they are synonymous. To compress to a single binding (instead of multiple), we intercept calls here to TransactionSynchronizationManager and create a unified key based on the route that either EntityManagerFactory will match against. This allows us to save on the number of EntityManagers that are created for the transaction (avoid redundancy) and also save on the number of connections requested from the DB connection pool as a result.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static @interface	TransactionSynchronizationManagerAdvice.RedefinedMarker
static class	TransactionSynchronizationManagerAdvice.SimpleEntityManagerFactoryKey

Method Summary

Modifier and Type	Method	Description
static Object	constructKey(Object key)
static void	init()

Methods inherited from class java.lang.Object

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

Method Details

init

public static void init()

constructKey

public static Object constructKey(Object key)