loading DB driver in Global.beforeStart - postgresql

Question

I want to implement some DB cleanup at each startup (full schema deletion and recreation while in dev-enviroment).
I'm doing it in Global.beforeStart. And because it's literally before start I need to load DB drivers myself.
The code is:
#Override
public void beforeStart(Application app){
System.out.println("IN beforeStart");
try{
Class.forName("org.postgresql.Driver");
System.out.println("org.postgresql.Driver LOADED");
} catch (ClassNotFoundException cnfe){
System.out.println("NOT LOADED org.postgresql.Driver");
cnfe.printStackTrace();
}
ServerConfig config = new ServerConfig();
config.setName("pgtest");
DataSourceConfig postgresDb = new DataSourceConfig ();
postgresDb.setDriver("org.postgresql.Driver");
postgresDb.setUsername("postgres");
postgresDb.setPassword("postgrespassword");
postgresDb.setUrl("postgres://postgres:postgrespassword#localhost:5432/TotoIntegration2");
config.setDataSourceConfig(postgresDb);
config.setDefaultServer(true);
EbeanServer server = EbeanServerFactory.create(config);
SqlQuery countTables = Ebean.createSqlQuery("select count(*) from pg_stat_user_tables;");
Integer numTables = countTables.findUnique().getInteger("count");
System.out.println("numTables = " + numTables);
if(numTables>2){
DbHelper.cleanSchema();
}
System.out.println("beforeStart EXECUTED");
//DbHelper.cleanSchema();
}
Class.forName("org.postgresql.Driver") passed without exceptions, but then I'm getting:
com.avaje.ebeaninternal.server.lib.sql.DataSourceException: java.sql.SQLException: No suitable driver found for postgres
on the line EbeanServer server = EbeanServerFactory.create(config);
Why?

Answer 1

Use onStart instead, it's performed right after beforeStart but it's natural candidate for operating on database (in production mode it doesn't wait for first request), javadoc for them:
/**
* Executed before any plugin - you can set-up your database schema here, for instance.
*/
public void beforeStart(Application app) {
}
/**
* Executed after all plugins, including the database set-up with Evolutions and the EBean wrapper.
* This is a good place to execute some of your application code to create entries, for instance.
*/
public void onStart(Application app) {
}
Note, that you don't need include DB config additionally here, you can use your models here the same way as you do in controller.