I setup simple java ee project and using jta transaction and using OpenJpa 2.4.2 as Jpa provider, maven 3.3, eclipse 2020-06, jdk 8U2002, weblogic 12.4.2 and java ee 6 and get this exception:
javax.ejb.EJBException: EJB Exception: : <openjpa-2.4.2-r422266:1777108 nonfatal general error> org.apache.openjpa.persistence.PersistenceException: Cannot set auto-commit mode when using distributed transactions
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:571)
at org.apache.openjpa.jdbc.meta.MappingTool.record(MappingTool.java:467)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:160)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.synchronizeMappings(JDBCBrokerFactory.java:164)
at org.apache.openjpa.jdbc.kernel.JDBCBrokerFactory.newBrokerImpl(JDBCBrokerFactory.java:122)
and this 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"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="batch" transaction-type="JTA" >
<provider>org.apache.openjpa.persistence.PersistenceProviderImpl </provider>
<jta-data-source>jdbc/new</jta-data-source>
<class>com.smartsoft.persistence.Person</class>
<validation-mode>NONE</validation-mode>
<properties>
<property name="openjpa.DynamicEnhancementAgent" value="false"/>
<property name="openjpa.RuntimeUnenhancedClasses" value="unsupported"/>
<property name="openjpa.jdbc.SynchronizeMappings" value="buildSchema(ForeignKeys=true)"/>
<property name="openjpa.Log" value="DefaultLevel=TRACE"/>
</properties>
</persistence-unit>
</persistence>
I have a simple Entity class that has firstName and lastName and age fields and setter getter methods. and an Stateless Ejb class that injects EntityManager with @PersistenceContext annotation and has save method that calls em.persist(Person) Then I inject this dao in a servlet and pass a person class to it. This is my Weblogic.xml file:
<?xml version="1.0" encoding="UTF-8"?>
<wls:weblogic-web-app xmlns:wls="http://xmlns.oracle.com/weblogic/weblogic-web-app" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd http://xmlns.oracle.com/weblogic/weblogic-web-app http://xmlns.oracle.com/weblogic/weblogic-web-app/1.4/weblogic-web-app.xsd">
<wls:context-root>persistence</wls:context-root>
<wls:container-descriptor>
<wls:prefer-web-inf-classes>true</wls:prefer-web-inf-classes>
</wls:container-descriptor>
</wls:weblogic-web-app>
This is my dao class: @Stateless public class PersonEjb {
@PersistenceContext
private EntityManager entityManager;
private static final Logger logger =Logger.getLogger("PersonEjb");
public void save(Person person) {
entityManager.persist(person);
logger.info("persisted");
}
}
and This is servlet:
@WebServlet("/Serv1")
public class Serv1 extends HttpServlet {
private static final long serialVersionUID = 1L;
@EJB
private PersonEjb pe;
public Serv1() {
super();
}
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
Person p = new Person();
p.setAge(25);
p.setFirstName("hamidreza");
p.setLastName("abroshan");
pe.save(p);
response.getWriter().append("Served at: ").append(request.getContextPath());
}
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
}
} You can download this project at github.
Thanks allot.
