Vaadin OSGI Application

Vaadin 6 / 7 / 8
1

Hi,

I am trying to develop a simple Vaadin-OSGI application.
I have gone through various Vaadin-OSGI samples available but not able to understand how to convert simple vaadin application into Vaadin-OSGI application.

Is there any way to create a Vaadin-OSGI project by default ?

I am using Eclipse IDE which has OSGI framewrok already installed.

2

Haven’t tried it out myself, but there’s at least
this example
 that you can try out.

3

You can also check :


http://wiki.rpgnextgen.com/doku.php?id=vaadin_7_osgi_web_application

I have been also sturggling to get my vaadin plugin working with OSGi for the last few days. Have made some little progress. Will tell you what I did and am planning to do. If you need some help please ask.

1 : Started by having all the vaadin plusigns in thelib folder of my plugin (all plugins have all the vaadin modules) and the packaging type war.
2 : Next step was to move from war to bundle
3 : One of the most crucial step was moving all my Vaadin related libraries to karaf. This is where the example I mentioned above helped me.

The main reason the example mentioned by Kim diodnt worked for me was that I am using old setup (OSGI : 4.1.1, Vaadin : 7.3.3 and Java 6).

The next immediate step for me would be have different Vaadin based submodules which could be deployed and undeployed from OSGi at runtime.

4

Any such simple demo for Eclipse (Equinox)?

5

you can try this


https://github.com/niveo/vaadin-osgi-glassfish

6

Thanks Niveo for such simple and elegant example.

By going through the source i am able to understand the concept but still not able to understand how to create a fresh new vaadin-osgi based application.
Do i need to create a Plugin based project or Maven project or vaadin project?
Still a bit confused in creating a new application using eclipse.
Any guide for same will be helpful.

7

Go ahead with the maven based project. I havent created a vaadin or plugin project in eclipse. But I think it just gives you extra features and boilerplate code which you would have to write yourself if you start from a normal project. So, you can create any of these projects and remove the parts that are not needed or start from bare bones and gradually move towards your goal.

8

I would also hijack your post abit :slight_smile: and ask Niveo or if someone knows that how can I add resources to my submodules. It would be great if you could look into https://vaadin.com/forum#!/thread/10136425

9

Hi Salman,

After creation of Maven Project , do we need to manually add Bundle Activator Class which gets created automatically in case of Plugin project?
Also i am still not able to understand how to thereafter link Osgi bundle with Vaadin i.e. linkage of osgi environment and vaadin server environment.

Any basic working step guide of vaadin-osgi using eclipse will be of great help

10

Hi,

I have managed to create an OSGI Declarative Service using Eclipse.

In my service implementation i am trying to notify user with Notification class.

But in MANIFEST.MF i am not able to export com.vaadin.ui package which is required to use this service.
While exporting service error comes “com.vaadin.ui” package not found.

There is no compilation error and i have manually added vaadin jars in build path of project

Any solution for same?

Error log is as follows

4/6/15 12:50:08 AM IST

Eclipse Compiler for Java™ v20150120-1634, 3.10.2, Copyright IBM Corp 2000, 2013. All rights reserved.

  1. ERROR in C:\Users\Abhishek\Desktop\Abhi Data\MODCMS\MMI_Workspace\ServiceFactory\src\modcms\cms\servicefactory\ComponentServiceImp.java (at line 3)
    import com.vaadin.ui.Notification;
    ^^^^^^^^^^
    The import com.vaadin cannot be resolved
  1. ERROR in C:\Users\Abhishek\Desktop\Abhi Data\MODCMS\MMI_Workspace\ServiceFactory\src\modcms\cms\servicefactory\ComponentServiceImp.java (at line 33)
    Notification.show(“This notification is part of OSGI Service Bundle”);
    ^^^^^^^^^^^^
    Notification cannot be resolved

2 problems (2 errors)