Single EntityManager

[yoav200]

Hello,

i have a webapp build with seam,ejb3 and jsf.
in the application i have several different action to manipulate the DB.
not only from the webclient (browser) but from web services.

my broblem is that if a web service changed some thing it doesn't reflect on the web (the DB has chaged).

i have printed the id of the entetyManager (hashcode) and i'm getting a different one for each request.
my entityManager is injected using seam.
this is a big issue for me since i have wrong data in my web.

here is my persistence.xml:

<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="1.0"
 xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">

 <persistence-unit name="account">
 <jta-data-source>java:/jdbc/wml</jta-data-source>
 <properties>
 <property name="jboss.entity.manager.factory.jndi.name"
 value="java:/wmlEntityManagerFactory" />
 <property name="hibernate.dialect"
 value="org.hibernate.dialect.MySQLInnoDBDialect" />
 </properties>
 </persistence-unit>

</persistence>

and here is my components.xml:

....
<component name="wmlEntityManager"
 class="org.jboss.seam.core.ManagedPersistenceContext" auto-create="true">
 <property name="persistenceUnitJndiName">java:/wmlEntityManagerFactory</property>
 </component>
.....

and the DAO:

....
@Name("genericDao")
public abstract class GenericDaoImpl<T> implements GenericDao<T> {

 @In(value="wmlEntityManager")
 EntityManager em;

 public T get(Serializable id) {
 return em.find(getPersistentClass(), id);
 }
......

[gavin.king]

The Seam-managed persistence context caches entities in the conversation context (this is what you want to happen). To see the changes made by some other transaction, you need to end the conversation.

[yoav200]

thanks,
you are right my problem is with the seam conversation management.

[rapowder]

Gavin, isn't there anyway to trigger global events? I mean something like

Events.instance().raiseEvent(EVENT_NAME)

in the Application scope and capture it in the same way @Observer methods do? (I am using Seam 1.2.1.GA)

Thank you!