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Date: Mon, 26 Oct 2009 05:00:34 -0700 (PDT)
From: B_A <bernd.altmiks@steria-mummert.de>
To: users@camel.apache.org
Subject: Re: JPA component in a JEE5 environment: EntityManagerFactory from
  JNDI
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Claus Ibsen-2 wrote:
>=20
> On Mon, Oct 26, 2009 at 10:13 AM, BAltmiks
> <bernd.altmiks@steria-mummert.de> wrote:
>>
>>
>>
>> BAltmiks wrote:
>>>
>>> Hi Claus,
>>>
>>> this is what the Oracle-Support says. I will try these.
>>>
>>>
>>> Hello Bernd,
>>>
>>> I tried calling you regarding the issue, however couldn't reach.
>>>
>>> As per the issue I understand that you are using trying to lookup the
>>> Entity Manager instance and you are trying to use Entity Manager
>>> Factory, but you do not wish to use injection of .@PersistenceContext.
>>>
>>> Please let me know if you are using any JPA provider (e.g. kodo,
>>> hibernate etc).
>>>
>>> In JEE the EntityManager or EntityManagerFactory can either be looked
>>> up in JNDI, or injected into a SessionBean. To look up the
>>> EntityManager in JNDI it must be published in JNDI such as through a
>>> <persistence-context-ref> in a SessionBean's ejb-jar.xml file. To
>>> inject an EntityManager or EntityManagerFactory the
>>> annotation .@PersistenceContext or .@PersistenceUnit are used.
>>>
>>> For your reference I am adding both the options (annotation / non-
>>> annota)
>>>
>>> Example SessionBean ejb-jar.xml file with persistence context
>>>
>>> <?xml version=3D"1.0" encoding=3D"UTF-8"?>
>>> <ejb-jar xmlns=3D"http://java.sun.com/xml/ns/javaee"
>>> xmlns:xsi=3D"http://www.w3.org/2001/XMLSchema-instance"
>>> xsi:schemaLocation=3D"http://java.sun.com/xml/ns/javaee
>>> http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd"
>>> version=3D"3.0">
>>> <enterprise-beans>
>>> <session>
>>> <ejb-name>EmployeeService</ejb-name>
>>> <business-remote>org.acme.EmployeeService</business-remote>
>>> <ejb-class>org.acme.EmployeeServiceBean</ejb-class>
>>> <session-type>Stateless</session-type>
>>> <persistence-context-ref>
>>> <persistence-context-ref-name>persistence/acme/entity-manager</
>>> persistence-context-ref-name>
>>> <persistence-unit-name>acme</persistence-unit-name>
>>> </persistence-context-ref>
>>> <persistence-unit-ref>
>>> <persistence-unit-ref-name>persistence/acme/factory</persistence-unit-
>>> ref-name>
>>> <persistence-unit-name>acme</persistence-unit-name>
>>> </persistence-unit-ref>
>>> </session>
>>> </enterprise-beans>
>>> </ejb-jar>
>>>
>>> Example of looking up an EntityManager in JNDI
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>>
>>> InitialContext context =3D new InitialContext();
>>> EntityManager entityManager =3D (EntityManager)context.lookup("java:com=
p/
>>> env/persistence/acme/entity-manager");
>>> ...
>>>
>>> Example of looking up an EntityManagerFactory in JNDI
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
>>>
>>> InitialContext context =3D new InitialContext();
>>> EntityManagerFactory factory =3D (EntityManagerFactory)context.lookup
>>> ("java:comp/env/persistence/acme/factory");
>>> ...
>>>
>>> Example of injecting an EntityManager and EntityManagerFactory
>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
>>>
>>> .@Stateless(name=3D"EmployeeService", mappedName=3D"acme/EmployeeServic=
e")
>>> .@Remote(EmployeeService.class)
>>> public class EmployeeServiceBean implements EmployeeService {
>>>
>>> .@PersistenceContext(unitName=3D"acme")
>>> private EntityManager entityManager;
>>>
>>> .@PersistenceUnit(unitName=3D"acme")
>>> private EntityManagerFactory factory;
>>> ...
>>> }
>>>
>>> Please feel free to get back to me in case of any doubt or query
>>> regarding the same.
>>>
>>>
>>> Regards,
>>> Saumajit Das
>>>
>>>
>>>
>>>
>>>
>>>>
>>> Claus Ibsen-2 wrote:
>>>>
>>>>>Hi
>>>>>
>>>>>That is the same s*** with the J2ee servers and the JNDI lookup. Its
>>>>>painful when it does not work and you need to setup all kind
>>>>>of indirections in various deployment descriptors both standard j2ee
>>>>>related and server specific.
>>>>>
>>>>>I will try googling and look at WebLogic documentation as its a pure
>>>>>WebLogic + Spring J2ee lookup thingy.
>>>>
>>>>
>>>>
>>>> On Mon, Aug 31, 2009 at 10:31 AM,
>>>> BAltmiks<bernd.altmiks@steria-mummert.de> wrote:
>>>>>
>>>>> - Camel 2.0M3
>>>>> - Camel-JPA 2.0M3
>>>>> - Weblogic 10
>>>>> - Hibernate-Core 3.3.0.SP1
>>>>> - Hibernate-EntityManager 3.4.0.GA
>>>>> - Configuration in Spring XML
>>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> I tried to make use of the jpa component. But I have problems to get
>>>>> an
>>>>> EntityManagerFactory from JNDI on Weblogic 10. As described in the
>>>>> http://static.springsource.org/spring/docs/2.5.x/reference/orm.html#o=
rm-jpa
>>>>> Spring JPA Documentation =C2=A0I do a JNDI-Lookup. persistence-unit-r=
ef
>>>>> entries
>>>>> are defined in the Java EE deployment descriptor (ejb-jar.xml).
>>>>>
>>>>> The Exception is:
>>>>>
>>>>> javax.naming.NameNotFoundException: Unable to resolve
>>>>> 'TMD_PERSISTENCE'.
>>>>> Resolved ''; remaining name 'TMD_PERSISTENCE'
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> weblogic.jndi.internal.BasicNamingNode.newNameNotFoundException(Basic=
NamingNode.java:1138)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> weblogic.jndi.internal.BasicNamingNode.lookupHere(BasicNamingNode.jav=
a:251)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> weblogic.jndi.internal.ServerNamingNode.lookupHere(ServerNamingNode.j=
ava:171)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> weblogic.jndi.internal.BasicNamingNode.lookup(BasicNamingNode.java:20=
5)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> weblogic.jndi.internal.WLEventContextImpl.lookup(WLEventContextImpl.j=
ava:254)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:367)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at javax.naming.InitialContext.lookup(Init=
ialContext.java:351)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> org.springframework.jndi.JndiTemplate$1.doInContext(JndiTemplate.java=
:155)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> org.springframework.jndi.JndiTemplate.execute(JndiTemplate.java:88)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:153)
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0at
>>>>> org.springframework.jndi.JndiTemplate.lookup(JndiTemplate.java:178)
>>>>>
>>>>> Can anybody give me a hint what i am doing wrong?
>>>>>
>>>>> Thanks,
>>>>> Bernd Altmiks
>>>>>
>>>>> My Camel-Context:
>>>>> ...
>>>>> <jee:jndi-lookup id=3D"eMFactory" jndi-name=3D"TMD_PERSISTENCE"/>
>>>>>
>>>>> <bean id=3D"jpa" class=3D"org.apache.camel.component.jpa.JpaComponent=
">
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0<property name=3D"entityManagerFactory" re=
f=3D"eMFactory" />
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0<property name=3D"transactionManager" ref=
=3D"txManager" />
>>>>> </bean>
>>>>>
>>>>> <bean id=3D"txManager"
>>>>> class=3D"org.springframework.transaction.jta.WebLogicJtaTransactionMa=
nager"/>
>>>>> ...
>>>>>
>>>>>
>>>>> My ejb-jar.xml
>>>>>
>>>>> <?xml version=3D"1.0" encoding=3D"UTF-8"?>
>>>>>
>>>>> <ejb-jar xmlns=3D"http://java.sun.com/xml/ns/javaee"
>>>>> xmlns:xsi=3D"http://www.w3.org/2001/XMLSchema-instance"
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0xsi:schemaLocation=3D"http://java.sun.com/=
xml/ns/javaee
>>>>> http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd"
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0version=3D"3.0">
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0<enterprise-beans>
>>>>>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<session>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0<ejb-name>ITMDClientDAO</ejb-name>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0<ejb-class>tmd.al.dao.TMDClientDAO</ejb-class>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0<session-type>Stateless</session-type>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0<persistence-unit-ref>
>>>>>
>>>>> =C2=A0<persistence-unit-ref-name>TMD_PERSISTENCE</persistence-unit-re=
f-name>
>>>>>
>>>>> =C2=A0<persistence-unit-name>TMD_PERSISTENCE</persistence-unit-name>
>>>>>
>>>>> =C2=A0<mapped-name>TMD_PERSISTENCE</mapped-name>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0=
 =C2=A0 =C2=A0</persistence-unit-ref>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0</session>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0</enterprise-beans>
>>>>> </ejb-jar>
>>>>>
>>>>>
>>>>> My persistence.xml
>>>>>
>>>>> <?xml version=3D"1.0" encoding=3D"UTF-8"?>
>>>>> <persistence xmlns=3D"http://java.sun.com/xml/ns/persistence"
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0xmlns:xsi=3D"http://www.w3.org/2001/XMLSch=
ema-instance"
>>>>> version=3D"1.0"
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0xsi:schemaLocation=3D"http://java.sun.com/=
xml/ns/persistence
>>>>> http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
>>>>> =C2=A0<persistence-unit name=3D"TMD_PERSISTENCE" transaction-type=3D"=
JTA">
>>>>> =C2=A0 =C2=A0<provider>org.hibernate.ejb.HibernatePersistence</provid=
er>
>>>>>
>>>>> <jta-data-source>com.mummert.tributum.tbpersistence.TributumDataSourc=
e</jta-data-source>
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0<class>tmd.al.entity.TMDMessage</class>
>>>>> =C2=A0 =C2=A0<properties>
>>>>> =C2=A0 =C2=A0 =C2=A0<property name=3D"hibernate.dialect"
>>>>> value=3D"org.hibernate.dialect.Oracle10gDialect"/>
>>>>> =C2=A0 =C2=A0 =C2=A0<property name=3D"hibernate.transaction.manager_l=
ookup_class"
>>>>> value=3D"org.hibernate.transaction.WeblogicTransactionManagerLookup" =
/>
>>>>> =C2=A0 =C2=A0 =C2=A0<property name=3D"hibernate.show_sql" value=3D"fa=
lse" />
>>>>> =C2=A0 =C2=A0 =C2=A0<property name=3D"hibernate.format_sql" value=3D"=
false" />
>>>>> =C2=A0 =C2=A0 =C2=A0<property name=3D"hibernate.use_sql_comments" val=
ue=3D"false"/>
>>>>> =C2=A0 =C2=A0 =C2=A0<property name=3D"hibernate.generate_statistics" =
value=3D"false" />
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 <property
>>>>> name=3D"hibernate.jndi.weblogic.jndi.replicateBindings"
>>>>> value=3D"false" />
>>>>> =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0<property name=3D"hibernate.=
query.factory_class"
>>>>> value=3D"org.hibernate.hql.classic.ClassicQueryTranslatorFactory"/>
>>>>> =C2=A0 =C2=A0 =C2=A0<property name=3D"hibernate.cache.use_second_leve=
l_cache"
>>>>> value=3D"false"/>
>>>>> =C2=A0 =C2=A0</properties>
>>>>> =C2=A0</persistence-unit>
>>>>> </persistence>
>>>>>
>>>>>
>>>>> --
>>>>> View this message in context:
>>>>> http://www.nabble.com/JPA-component-in-a-JEE5-environment%3A-EntityMa=
nagerFactory-from-JNDI-tp25219979p25219979.html
>>>>> Sent from the Camel - Users mailing list archive at Nabble.com.
>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>> Claus Ibsen
>>>> Apache Camel Committer
>>>>
>>>> Open Source Integration: http://fusesource.com
>>>> Blog: http://davsclaus.blogspot.com/
>>>> Twitter: http://twitter.com/davsclaus
>>>>
>>>>
>>>
>>>
>>
>> Doesn't work on Weblogic. There is no way to get the EntityManager from
>> JNDI. Here is the answer from the Oracle-Support:
>>
>> "According the EJB3 specification, you need to lookup the entity from th=
e
>> same container (from any servlet or session bean running on that
>> container)."
>>
>=20
> And how do Oracle Support envision you should lookup an Entity?
> Using JNDI? And if so how do you do that? How do you configure / setup
> this?
> And how do you get the Entity registered in the first place?
>=20
>=20
>=20
>>
>> --
>> View this message in context:
>> http://www.nabble.com/JPA-component-in-a-JEE5-environment%3A-EntityManag=
erFactory-from-JNDI-tp25219979p26056419.html
>> Sent from the Camel - Users mailing list archive at Nabble.com.
>>
>>
>=20
>=20
>=20
> --=20
> Claus Ibsen
> Apache Camel Committer
>=20
> Author of Camel in Action: http://www.manning.com/ibsen/
> Open Source Integration: http://fusesource.com
> Blog: http://davsclaus.blogspot.com/
> Twitter: http://twitter.com/davsclaus
>=20
>=20

>And how do Oracle Support envision you should lookup an Entity?
>Using JNDI? And if so how do you do that? How do you configure / setup
this?
>And how do you get the Entity registered in the first place?

Sorry Claus my mistake when I wrote this Message. I mean
EntityManagerFactory and not Entity. I=20
http://www.nabble.com/file/p26058442/entitymanagerfactorylookup.zip
entitymanagerfactorylookup.zip=20
http://www.nabble.com/file/p26058442/entitymanagerfactorylookup.zip
entitymanagerfactorylookup.zip=20
have corrected my Message.=20

I have sent the Oracle-Support an example Testcase (find it attached) so
that they can see what i=20

want to do. I my case lookup the EntityManagerFactory from an "client". An
POJO like=20

Camel/Spring. The answer I got was that it is not possible on Weblogic 10.0
if you are not=20

"inside" an Session Bean or Servlet.

At the Moment, as a workaround, I use an Stateless Session Bean where the
EntityManager (not the=20

EntityManagerFactory) gets injected to persist my Entity with Camel. =20

I would be thankfully if you have any further suggestions.

Regards,
Bernd

--=20
View this message in context: http://www.nabble.com/JPA-component-in-a-JEE5=
-environment%3A-EntityManagerFactory-from-JNDI-tp25219979p26058442.html
Sent from the Camel - Users mailing list archive at Nabble.com.