wamblee.org Git - utils/blob

   1 /*
   2  * SCJD assignment, URLyBird, Erik Brakkee.
   3  * Candidate ID: sr1399267.
   4  */
   5 package org.wamblee.support.persistence.toplink;
   6
   7 import oracle.toplink.essentials.jndi.JNDIConnector;
   8 import oracle.toplink.essentials.sessions.DatabaseLogin;
   9 import oracle.toplink.essentials.sessions.Session;
  10 import oracle.toplink.essentials.threetier.ServerSession;
  11 import oracle.toplink.essentials.tools.sessionconfiguration.SessionCustomizer;
  12
  13 import javax.naming.Context;
  14 import javax.naming.InitialContext;
  15
  16
  17 /**
  18  * See
  19  * http://wiki.eclipse.org/Customizing_the_EclipseLink_Application_(ELUG) Use
  20  * for clients that would like to use a JTA SE pu instead of a RESOURCE_LOCAL
  21  * SE pu.  This utility also makes sure that using a persistence.xml with a
  22  * JTA datasource works in a standalone Java SE  environment together with our
  23  * JNDI stub.
  24  */
  25 public class JndiSessionCustomizer implements SessionCustomizer {
  26 /**
  27      * Creates a new JndiSessionCustomizer object.
  28      */
  29     public JndiSessionCustomizer() {
  30         // Empty.
  31     }
  32
  33     /**
  34      * Get a dataSource connection and set it on the session with
  35      * lookupType=STRING_LOOKUP
  36      *
  37      * @param session DOCUMENT ME!
  38      *
  39      * @throws Exception DOCUMENT ME!
  40      */
  41     public void customize(Session session) throws Exception {
  42         JNDIConnector connector = null;
  43         Context       context   = null;
  44
  45         try {
  46             context = new InitialContext();
  47
  48             if (null != context) {
  49                 connector = (JNDIConnector) session.getLogin().getConnector(); // possible CCE
  50                                                                                // Change from COMPOSITE_NAME_LOOKUP to STRING_LOOKUP
  51                                                                                // Note: if both jta and non-jta elements exist this will only change the first one - and may still result in
  52                                                                                // the COMPOSITE_NAME_LOOKUP being set
  53                                                                                // Make sure only jta-data-source is in persistence.xml with no non-jta-data-source property set
  54
  55                 connector.setLookupType(JNDIConnector.STRING_LOOKUP);
  56
  57                 // Or, if you are specifying both JTA and non-JTA in your persistence.xml then set both connectors to be safe
  58                 JNDIConnector writeConnector = (JNDIConnector) session.getLogin()
  59                     .getConnector();
  60                 writeConnector.setLookupType(JNDIConnector.STRING_LOOKUP);
  61
  62                 JNDIConnector readConnector = (JNDIConnector) ((DatabaseLogin) ((ServerSession) session).getReadConnectionPool()
  63                     .getLogin()).getConnector();
  64                 readConnector.setLookupType(JNDIConnector.STRING_LOOKUP);
  65
  66                 System.out.println("JndiSessionCustomizer: configured "
  67                     + connector.getName());
  68             } else {
  69                 throw new Exception("JndiSessionCustomizer: Context is null");
  70             }
  71         } catch (Exception e) {
  72             e.printStackTrace();
  73         }
  74     }
  75 }