Toplink with OpenEJB 3.1

This is basically a follow up on my previous post, which deals with using EclipseLink or Toplink as your persistence provider.

With OpenEJB 3.0 you had to use a few workarounds described in my post entitled Toplink as your OpenEJB Persistence Provider.

All the steps are basically the same, ie. ensuring you have the necessary libraries on the classpath, configuring persistence.xml, etc.

The difference is in initializing your InitialContext. Previously you had to do the following:

   Properties properties = new Properties();
   properties.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.LocalInitialContextFactory");

   properties.put("openejbDatasource", "new://Resource?type=DataSource");
   properties.put("openejbDatasource.JdbcDriver", "org.postgresql.Driver");
   properties.put("openejbDatasource.JdbcUrl", "jdbc:postgresql://localhost:5432/vds_test");
   properties.put("openejbDatasource.UserName", "vds");
   properties.put("openejbDatasource.Password", "vds");

   System.getProperties().setProperty("toplink.target-server", "org.apache.openejb.toplink.openejb.OpenEJBTransactionController");
   System.getProperties().setProperty("toplink.ddl-generation", "drop-and-create-tables");
   System.getProperties().setProperty("toplink.logging.level", "INFO");
   System.getProperties().setProperty("toplink.create-ddl-jdbc-file-name", "create.sql");
   System.getProperties().setProperty("toplink.ddl-generation.output-mode", "both");

   InitialContext initialContext = new InitialContext(properties);

Now all you need to do is this:

   Properties properties = new Properties();
   properties.setProperty(Context.INITIAL_CONTEXT_FACTORY, "org.apache.openejb.client.LocalInitialContextFactory");

   properties.put("openejbDatasource", "new://Resource?type=DataSource");
   properties.put("openejbDatasource.JdbcDriver", "org.postgresql.Driver");
   properties.put("openejbDatasource.JdbcUrl", "jdbc:postgresql://localhost:5432/vds_test");
   properties.put("openejbDatasource.UserName", "vds");
   properties.put("openejbDatasource.Password", "vds");

   System.getProperties().setProperty("toplink.ddl-generation", "drop-and-create-tables");
   System.getProperties().setProperty("toplink.logging.level", "INFO");
   System.getProperties().setProperty("toplink.create-ddl-jdbc-file-name", "create.sql");
   System.getProperties().setProperty("toplink.ddl-generation.output-mode", "both");

   InitialContext initialContext = new InitialContext(properties);

It basically comes down to you not having to add the extra target-server property and thus no need to create the initialization class (in my example "org.apache.openejb.toplink.openejb.OpenEJBTransactionController") because OpenEJB 3.1 automatically detects and configures Toplink (or derived) providers.

Thank the OpenEJB developers for their extraordinary effort.