Re: [eclipselink-users] Anyone using EL with newer Tomcat Servlet Enviro

[Edson Carlos Ericksson Richter <edsonrichter@xxxxxxxxxxx>]

Yes, it works.
But you need a "trick" (I've adapted from example available in the 
Internet - but I lost the reference):

package my.pack;

import javax.naming.InitialContext;
import org.eclipse.persistence.config.SessionCustomizer;
import org.eclipse.persistence.sessions.Connector;
import org.eclipse.persistence.sessions.JNDIConnector;
import org.eclipse.persistence.sessions.Session;

public class JPACustomizer implements SessionCustomizer {

  public JPACustomizer() {
  }

  @Override
  public void customize(Session session) throws Exception {
    JNDIConnector connector;

    try {
      new InitialContext();
      Connector conn = session.getLogin().getConnector();

      if (conn instanceof JNDIConnector) {
        connector = (JNDIConnector) conn; // possible CCE
        connector.setLookupType(JNDIConnector.STRING_LOOKUP);
      }

    } catch (Exception e) {
      Util.debug(e);
    }
  }
}


then in configuration file, you will have to put (inside properties):

  <persistence-unit name="SimuladorFretePU" 
transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<non-jta-data-source>java:comp/env/jdbc/myDataSource</non-jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
    <shared-cache-mode>ALL</shared-cache-mode>
    <validation-mode>NONE</validation-mode>
    <properties>
      <property name="eclipselink.session.customizer" 
value="my.pack.JPACustomizer"/>
...


Kind regards,

Edson Richter


On 15-10-2014 10:31, Markus Kolb wrote:
> Hello,
> does anyone use current EclipseLink version with a up-to-date Tomcat 
> Servlet Container and JNDI non-jta-datasource?
> I try to get this working for some hours now...
> - EclipseLink 2.5.2 (also tried 2.5.0)
> - Tomcat 8.0.14 (but also 7.0.40 tried)
>
> The Tomcat configuration is working. I can lookup the datasource in my 
> application code.
> But EclipseLink throws a NullPointerException in its 
> JNDIConnector.connect(...).
> I've reported this as 
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=447264
>
> I've also tried 
> https://wiki.eclipse.org/EclipseLink/Examples/JPA/Tomcat_Web_Tutorial#Session_Customizer.
> Result: Same NPE.
>
> I'm using now a Jetty Container 9.2.3 with EclipseLink 2.5.2 and the 
> same WAR just works.
>
> Is there any trick to get this working in Tomcat?
>
> Thanks
> Markus
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