Hi Mansour,
Seems like you may have a mix of problems. Check out this doc which
attempts to clarify JPA usage.
http://openejb.apache.org/3.0/jpa-concepts.html
-David
On Dec 16, 2009, at 4:46 AM, Mansour Al Akeel wrote:
I do have some dao working with spring and tested them as pojos. I am
porting them to stateless beans. I am using User transaction (bean
managed transaction).
Following the example of entityManager injection :
public class RestaurantDaoTest3 extends AbstractRestaurantDaoTest {
private static Context context;
@BeforeClass
public static void setUpBeforeClass() throws Exception
{
DBSetup.runDbUnitSetup();
logger.warn("Strating testing using OpenEJB");
Properties properties = new Properties();
properties.setProperty(Context.INITIAL_CONTEXT_FACTORY,
"org.apache.openejb.client.LocalInitialContextFactory");
properties.put("openEjbDatabase", "new://Resource?type=DataSource");
properties.put("openEjbDatabase.JdbcDriver",
"com.mysql.jdbc.Driver");
properties.put("openEjbDatabase.JdbcUrl",
"jdbc:mysql://neptune:3306/dbtest");
properties.put("openEjbDatabase.UserName", "sa");
properties.put("openEjbDatabase.PassWord", "");
context = new InitialContext(properties);
Object obj = context.lookup("RestaurantDao3Local");
dao = (IDao) obj;
}
}
And the relevant dao code:
@Resource
private UserTransaction utx;
@Override
public Restaurant create(Restaurant obj)
{
Restaurant created = obj;
try
{
utx.begin();
obj = getEntityManager().merge(obj);
getEntityManager().persist(obj);
getEntityManager().flush();
utx.commit();
} catch (Exception e)
{
e.printStackTrace();
}
return created;
}
The exception I am getting:
<openjpa-1.2.1-r752877:753278 nonfatal user error>
org.apache.openjpa.persistence.TransactionRequiredException: Can only
perform operation while a transaction is active.
at
org
.apache
.openjpa.kernel.BrokerImpl.assertActiveTransaction(BrokerImpl.java:
4380)
at
org
.apache
.openjpa
.kernel
.DelegatingBroker.assertActiveTransaction(DelegatingBroker.java:1330)
at
org
.apache
.openjpa.persistence.EntityManagerImpl.flush(EntityManagerImpl.java:
591)
at
org
.apache
.openejb.persistence.JtaEntityManager.flush(JtaEntityManager.java:130)
This is my persistence.xml:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<persistence version="1.0"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd
http://java.sun.com/xml/ns/persistence/orm
http://java.sun.com/xml/ns/persistence/orm_1_0.xsd";
xmlns="http://java.sun.com/xml/ns/persistence";
xmlns:orm="http://java.sun.com/xml/ns/persistence/orm";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";>
<persistence-unit name="Testing" transaction-type="RESOURCE_LOCAL">
<class>ws.mansour.entities.Restaurant</class>
</persistence-unit>
</persistence>
I do have few quesitons here:
1- In the jndi Resource, I added openEjbDatabase as a DataSource, but
I don't understand how did it got picked by other DAO operations (ie.
read).
2- I am using RESOURCE_LOCAL at transaction type, which indicates that
the container (context) will not handle this. How do I create a
tranaction ? With spring I was not able to do
entityManager.getTranaction(), because the entityManager injected by
spring is proxied (AFAIK). Doing this here, will give me another
error, for example:
try
{
getEntityManager().getTransaction().begin();
obj = getEntityManager().merge(obj);
getEntityManager().persist(obj);
getEntityManager().flush();
getEntityManager().getTransaction().commit();
} catch (Exception e)
will give:
java.lang.IllegalStateException: A JTA EntityManager can not use the
EntityTransaction API. See JPA 1.0 section 5.5
at
org
.apache
.openejb
.persistence.JtaEntityManager.getTransaction(JtaEntityManager.java:
220)
What am I doing wrong ?
