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Creating and starting non e4 model bundle [message #1759147]

Thu, 06 April 2017 15:54

Henri Boucher

Messages: 56
Registered: September 2015

Member

I need a bundle that provides communication between a remote computer over the internet and processes running on the machine using EventBus or EventBroker.

I can't use MAddon because they must exit after subscribing to topic(s).

I'm not sure where in the MANIFEST.MF editor you can add a bundle or/and class that is activated at application startup. I also don't know what the code would look like (a Main or Start method?)

At the bottom of section 5.1.1 (Service Layer/Essentials) in osgi.core-4.3.0.pdf they state

Persistent Identifier Provide a means for bundles to track services across Framework restarts.

I'm very interested in that because I would like my bundle to span restrarts. Any examples of how osgi services work that I could look at?

I'd also appreciate any links that you think would be useful to me.

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Re: Creating and starting non e4 model bundle [message #1759277 is a reply to message #1759147]

Sun, 09 April 2017 22:53

Henri Boucher

Messages: 56
Registered: September 2015

Member

I've added an org.eclipse.core.runtime.applications extension with ID "comm" and with a class that implements IApplication. I also added "-application=comm" to the Program arguments section in the Arguments tab in run configurations. Both the Framework and Command-line arguments in the log have "-application=comm" at the end of their lines.

I tried 3 ways to confirm that the application plug-in starts: println(), eventBroker.post and finally a break-point in the class. All failed.

Any suggestions? I'd also like to confirm that If I did manage to get the application to run, it would share the same framework as my product (eg. share the event bus)?

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Re: Creating and starting non e4 model bundle [message #1759362 is a reply to message #1759277]

Mon, 10 April 2017 15:41

Henri Boucher

Messages: 56
Registered: September 2015

Member

I forgot to mention that I'm running on a target platform built with the e(fx)clipse runtime only.

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Re: Creating and starting non e4 model bundle [message #1759388 is a reply to message #1759362]

Tue, 11 April 2017 07:56

Thomas Schindl

Messages: 6651
Registered: July 2009

Senior Member

Why does an MAddon has to exit after subscribing? MAddons are there from the start until the tear down of the application

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Re: Creating and starting non e4 model bundle [message #1759552 is a reply to message #1759388]

Wed, 12 April 2017 23:10

Henri Boucher

Messages: 56
Registered: September 2015

Member

No Message Body

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Re: Creating and starting non e4 model bundle [message #1759553 is a reply to message #1759552]

Wed, 12 April 2017 23:13

Henri Boucher

Messages: 56
Registered: September 2015

Member

1. If MyAddon does not exit the application is never rendered.
2. The MinMaxAddon method exits after subscribing.

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Re: Creating and starting non e4 model bundle [message #1759601 is a reply to message #1759553]

Thu, 13 April 2017 17:46

Henri Boucher

Messages: 56
Registered: September 2015

Member

Oops. I just realized that MyAddon and MinMaxAddon are constructors not methods, so of course they have to exit. So is the answer to start a thread or bundle in MyAddon? What would the code look like?

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Re: Creating and starting non e4 model bundle [message #1759619 is a reply to message #1759601]

Thu, 13 April 2017 22:28

Henri Boucher

Messages: 56
Registered: September 2015

Member

I apologize for taking up some of your time because of my lack of knowledge and at the same time appreciate your help. I added this code to my constructor

final class MyAddonThread extends Thread{
	public void run() {
		System.out.println(eventBroker);
	}
}
(new MyAddonThread()).start();

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