Toplink JPA Problem

Question

Please i have this problem wth toplink in netbeans 6.1
The reason am bringin this here is that it uses toplink implementation of JPA
I have two projects
1.project A
2. Project b
In project A i have a database with Users,Contacts tables with a datasource configured as projectAdDS pointing to projectADb
In projectB i have a different database with Users,Contacts tables with a datasource configured as projectBdDS pointing to projectBDb
Now the generated Entity Classes for each projects is Users , Contacts. They have the same name but different package name
in project a the Users Entity classes is com.projectA.Users while in projectB is com.projectB.Users.
Now the problem is where the webapplication of projectA tries to save a Users it save it in projectB database.
That is the problem even when the two persistent are pointing to two different datasources.
Project A Persistent. XML
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
  <persistence-unit name="RestfulPU" transaction-type="JTA">
    <jta-data-source>phonebookdb</jta-data-source>
    <class>com.chineduefoagui.entity.Contacts</class>
    <class>com.chineduefoagui.entity.Users</class>
    <class>com.chineduefoagui.entity.Userdetails</class>
    <exclude-unlisted-classes>true</exclude-unlisted-classes>
    <properties/>
  </persistence-unit>
</persistence><?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">
<persistence-unit name="SoapProPU" transaction-type="JTA">
<jta-data-source>soapphonebook</jta-data-source>
<class>com.chineduefoagui.soap.entity.Users</class>
<class>com.chineduefoagui.soap.entity.Contacts</class>
<class>com.chineduefoagui.soap.entity.Userdetails</class>
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<properties/>
</persistence-unit>
</persistence>

Answer 1

Yes,
It looks like you are getting 2 connection attempts for phonebookdb (2 is normal) but receive soapphonebook as the connection - this is odd.
But, I am working fine. In my application which is working now with &lt;exclude-unlisted-classes&gt;true&lt;/exclude-unlisted-classes&gt; on "all" persistence units
I am working with two (Cell) entities in different packages (both are in the EJB jar). So this is either an issue with entities in the WAR or it is a db platform issue surrounding JavaDB
See a screencap of both persistence units working on two different datasources with the same entity "alias" but different packages
[http://wiki.eclipse.org/EclipseLink/Examples/JPA/WebLogic_Web_Tutorial#Two_Persistence_Units]
For reference I get the same 4 logs when I attempt a single JTA connection but in my case my datasource name is listed as null even though my app continues on ok.
In the case of using both persistence units I get 2 sets of 4 logs = 8 for the 4 connections to the 2 datasources
The two datasources in my case are Oracle11g (remoteJTA) and Oracle10g (localJTA) - both using the same 11g driver - so it is easier to tell them apart in the logs.
[EL Example|http://forums.oracle.com/forums/]: enterprise: Object: org.eclipse.persistence.example.jpa.server.entity.Cell@26145598( id: 1 state: null left: null right: null parent: HashSet@234560 references: HashSet@234560)
When i use the exampleDuplicate persistence unit i get a login for the first datasource
Oracle 10g = remoteJTA datasource
[EL Fine|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.356--Thread(Thread[)--Detected Vendor platform: org.eclipse.persistence.platform.database.oracle.Oracle10Platform
[EL Config|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.403--ServerSession(3303389)--Connection(18436986)--Thread(Thread[)--connecting(DatabaseLogin(
platform=&gt;Oracle10Platform
user name=&gt; ""
connector=&gt;JNDIConnector datasource name=&gt;null
[EL Config|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.419--ServerSession(3303389)--Connection(28810575)--Thread(Thread[)--Connected: jdbc:oracle:thin:@127.0.0.1:1521:orcl
User: SCOTT
Database: Oracle Version: Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Driver: Oracle JDBC driver Version: 11.1.0.7.0-Production
[EL Config|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.419--ServerSession(3303389)--Connection(28892307)--Thread(Thread[)--connecting(DatabaseLogin(
platform=&gt;Oracle10Platform
user name=&gt; ""
connector=&gt;JNDIConnector datasource name=&gt;null
[EL Config|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.419--ServerSession(3303389)--Connection(26833471)--Thread(Thread[)--Connected: jdbc:oracle:thin:@127.0.0.1:1521:orcl
User: SCOTT
Database: Oracle Version: Oracle Database 11g Enterprise Edition Release 11.1.0.6.0 - Production
With the Partitioning, OLAP, Data Mining and Real Application Testing options
Driver: Oracle JDBC driver Version: 11.1.0.7.0-Production
[EL Finest|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.419--ServerSession(3303389)--Thread(Thread[)--sequencing connected, state is Preallocation_NoTransaction_State
and the persist call
[EL Example|http://forums.oracle.com/forums/]: enterprise: ApplicationService persisting: [email protected]( id: null state: null left: null right: null parent: HashSet@18981093 references: HashSet@18981093) on EM: org.eclipse.persistence.internal.jpa.EntityManagerImpl@1a7ed8f&gt; later when I use the other example persistence unit i get a login for the second datasource
Oracle 11g = localJTA datasource
[EL Fine|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.966--Thread(Thread[)--Detected Vendor platform: org.eclipse.persistence.platform.database.oracle.Oracle10Platform
[EL Config|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.966--ServerSession(25279766)--Connection(13859800)--Thread(Thread[)--connecting(DatabaseLogin(
platform=&gt;Oracle10Platform
user name=&gt; ""
connector=&gt;JNDIConnector datasource name=&gt;null
[EL Config|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.966--ServerSession(25279766)--Connection(6794127)--Thread(Thread[)--Connected: jdbc:oracle:thin:@10.156.53.19:1521:orcl
User: SCOTT
Database: Oracle Version: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
Driver: Oracle JDBC driver Version: 11.1.0.7.0-Production
[EL Config|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.966--ServerSession(25279766)--Connection(3176465)--Thread(Thread[)--connecting(DatabaseLogin(
platform=&gt;Oracle10Platform
user name=&gt; ""
connector=&gt;JNDIConnector datasource name=&gt;null
[EL Config|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.997--ServerSession(25279766)--Connection(1751745)--Thread(Thread[)--Connected: jdbc:oracle:thin:@10.156.53.19:1521:orcl
User: SCOTT
Database: Oracle Version: Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - Production
With the Partitioning, OLAP and Data Mining options
Driver: Oracle JDBC driver Version: 11.1.0.7.0-Production
[EL Finest|http://forums.oracle.com/forums/]: 2008.12.15 15:43:56.997--ServerSession(25279766)--Thread(Thread[)--sequencing connected, state is Preallocation_NoTransaction_State
and the persist call
[EL Example|http://forums.oracle.com/forums/]: enterprise: ApplicationService2 persisting: org.eclipse.persistence.example.jpa.server.entity.Cell@20979305( id: null state: null left: null right: null parent: HashSet@14247956 references: HashSet@14247956) on EM: org.eclipse.persistence.internal.jpa.EntityManagerImpl@14bf56d
Here is my whole persistence unit (note I am not using the RESOURCE_LOCAL one but I still need an exclude on it
.&lt;persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence [http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd]"&gt;
&lt;persistence-unit name="exampleDuplicate" transaction-type="JTA"&gt;
&lt;provider&gt;org.eclipse.persistence.jpa.PersistenceProvider&lt;/provider&gt;
&lt;jta-data-source&gt;remoteJTA&lt;/jta-data-source&gt;
&lt;class&gt;org.eclipse.persistence.example.jpa.server.entity.Cell&lt;/class&gt;
&lt;exclude-unlisted-classes&gt;true&lt;/exclude-unlisted-classes&gt;
&lt;properties&gt;
&lt;property name="eclipselink.target-server" value="WebLogic_10"/&gt;
&lt;property name="eclipselink.logging.level" value="FINEST"/&gt;
&lt;/properties&gt;
&lt;/persistence-unit&gt;
&lt;persistence-unit name="example" transaction-type="JTA"&gt;
&lt;provider&gt;org.eclipse.persistence.jpa.PersistenceProvider&lt;/provider&gt;
&lt;jta-data-source&gt;localJTA&lt;/jta-data-source&gt;
&lt;class&gt;org.eclipse.persistence.example.jpa.server.business.Cell&lt;/class&gt;
&lt;exclude-unlisted-classes&gt;true&lt;/exclude-unlisted-classes&gt;
&lt;properties&gt;
&lt;property name="eclipselink.target-server" value="WebLogic_10"/&gt;
&lt;property name="eclipselink.logging.level" value="FINEST"/&gt;
&lt;/properties&gt;
&lt;/persistence-unit&gt;
&lt;persistence-unit name="exampleLocal" transaction-type="RESOURCE_LOCAL"&gt;
&lt;provider&gt;org.eclipse.persistence.jpa.PersistenceProvider&lt;/provider&gt;
&lt;class&gt;org.eclipse.persistence.example.jpa.server.business.Cell&lt;/class&gt;
&lt;exclude-unlisted-classes&gt;true&lt;/exclude-unlisted-classes&gt;
&lt;properties&gt;
&lt;property name="eclipselink.jdbc.driver" value="oracle.jdbc.driver.OracleDriver"/&gt;
&lt;property name="eclipselink.jdbc.platform" value="org.eclipse.persistence.platform.database.oracle.OraclePlatform"/&gt;
&lt;property name="eclipselink.jdbc.url" value="jdbc:oracle:thin:@127.0.0.1:1521:orcl"/&gt;
&lt;property name="eclipselink.jdbc.user" value="scott"/&gt;
&lt;property name="eclipselink.jdbc.password" value="tiger"/&gt;
&lt;/properties&gt;
&lt;/persistence-unit&gt;
&lt;/persistence&gt;
I also do not see anything from the persistence unit "SoapProPU" in the logs from your servlet. Have you initialized both persistence units there or are there logs from the other servlet?
For example I used the following servlet with 2 references to session beans that in turn reference the 2 pu's - or you could just use persistence unit injection on the servlet.
public class FrontController extends HttpServlet implements Servlet {
@EJB(beanName="ApplicationService")
public ApplicationServiceLocal applicationService;
@EJB(beanName="ApplicationService2")
public ApplicationServiceLocal2 applicationService2;
@Local @Stateless
public class ApplicationService2 implements ApplicationServiceLocal2 {
@PersistenceContext(unitName="exampleDuplicate", type=PersistenceContextType.TRANSACTION)
private EntityManager entityManager;
@Local@Stateless
public class ApplicationService implements ApplicationServiceLocal {
@PersistenceContext(unitName="example", type=PersistenceContextType.TRANSACTION)
private EntityManager entityManager;
This may be DB platform specific, I think a reproduction on the same JavaDBPlatform is required on our side.
You may be right about the alias name that is narrowed to Userdetails (with no qualifying package). I see the same message when creating the EntityManagerFactory for the particular PU from....
m_entityName = Helper.getShortClassName(getJavaClassName());
getLogger().logConfigMessage(MetadataLogger.ALIAS, getDescriptor(), m_entityName);
and get further because I forgot to add the following exclude so that predeploy does not pick up classes from the persistence.xml classpath.
&lt;exclude-unlisted-classes&gt;true&lt;/exclude-unlisted-classes&gt;
I wil let you know when I have switched my reproduction to use JavaDB.
thank you
/michael [http://www.eclipselink.org/]