Running a Vaadin app without a UI???

General
1

I am building a system that includes several web applications that I am hoping to create with Vaadin. Along the way, I’ve been building a database interface using the JPAContainer. Now I find that I need to build some infrastructure programs that do some housekeeping chores - database rebuilds, updates and so on, but these programs will be run from a cron job and will have no UI. Can I just create a Java project in Eclipse and include the JPAContainer jar file or do I need to include the vaadin.jar file as well? And if I do that, do I have to make it a Vaadin project? I’d rather not if it isn’t necessary…

thanks,

nbc

2

The JPAContainer depends on several interfaces found in Vaadin so you will have to include the vaadin.jar into your project to use it.

However, I don’t think you will have to make a vaadin project since it is a pure server side addon with very little dependencies to the UI. So just creating a normal Java project and including the vaadin and jpacontainer jars should work. Haven’t tried it though so cannot say for sure.

3

That is what I expected - I’ll give it a try. Thanks very much,

nbc

4

You can also take a look at the unit tests of JPAContainer
here
 - there are lots of them and they all work without a Vaadin UI.