Preload data in database using JPA Hibernate.

[Jacco Steur]

I am in the process of rewriting the play-authenticate-usage application from ebean to jpa hibernate.

The thing I got stuck with is that in the Global.java class of the app there is a preload of data for the security role. Because you can not get a JPA entitymanager in the Global.java context I need to do this in another way.

In unit test I use the fakeApplication stuff like:

running(fakeApplication(), new Runnable() {

public void run() {

JPA.withTransaction(new play.libs.F.Callback0() {

public void invoke() {

                                            JPA stuff.

};

});

}

});

}

 

I am not sure if this is the right way to go. What I really would like is using yaml to preload the database. Does anybody know how to dothis? In my final application I need to preload much more data then just the security_role 'user'.

Thanks in advance.

[Endian Ogino]

I actually doing it exactly like this.

 private void setupEntities() {

        JPA.withTransaction(() ->

     World firstWorld = ((List<World>) Yaml.load("default_fixtures/default-world.yml"))

                firstWorld.save(); 

        });

    }

With Play 2.3. + Java 8 it looks less ugly and it works.

My tests look also the same where I have extracted some boilerplate code into the BaseTest class

public void wrapRunnableAsTest(Runnable runnable) {

        running(testServer(PORT, app), runnable);

}

Thats the way I go. If anyone knows a better way, let me know.