Hi Dileepa,

I am not an Eclipse dev, but hopefully this will help you to better understand 
the difference between p2 and OSGi.

I like to think of p2 as a component repository and a tool to configure which 
bundles will be available in OSGi runtime once Eclipse is started. On the other 
hand, as soon as Eclipse is launched, it is straightforward to install and 
uninstall various OSGi bundles dynamically. Thus, if you want to dynamically 
load and unload feature groups at runtime, it is probably better to use OSGi 
API, whereas if you want to have several related Eclipse-based applications 
created on demand, it is probably better to use p2 API. Under "feature groups" 
I really meant a "not too heavy" set of features with non-conflicting 
requirements which can be swapped at runtime, and under "related applications" 
I meant a bigger set of features with potentially conflicting requirements 
which can only be swapped after a restart.


Regards,
Mikhail

----- Original Message -----

From: "Ian Bull" <[email protected]>
To: "P2 developer discussions" <[email protected]>
Sent: Friday, January 18, 2013 7:54:06 PM
Subject: Re: [p2-dev] Loading different P2 Profiles during runtime


Targets have a special meaning in Eclipse, and they are "development time" 
artifacts. In particular, that bug you pointed to (bug 287619) is about using 
p2 profiles at development time, so I'm that will not help you with the runtime 
aspects. If what your trying to do is "pool" several different applications 
together (so they share a common set of bundles), and allow the user to choose 
which which application to start, I would structure this a multiple p2 
profiles. You likely need to create your own "configurator" to start that 
application, but it should be possible.


cheers,
ian



On Fri, Jan 18, 2013 at 10:48 AM, Pascal Rapicault < 
[email protected] > wrote:





Hi Dileepa,

>From reading your note, I have the impression that you have your own notion of 
>profile that is different than the one from p2.
As I said, the notion of profile used in p2 does not represent something to 
install, but the installed state.

In your case, what I think you want to do is identify the set of features that 
constitute a profile and group them into one feature that you can easily 
identify for installation (and to present it to the user ?). Then when the user 
select such a feature, you uninstall any previously installed feature and 
install this feature in the runtime, and then you install the “target product”.

HTH

Pascal

From: [email protected] [mailto: [email protected] ] On 
Behalf Of Dileepa Jayakody
Sent: January-17-13 3:29 PM
To: [email protected]
Subject: Re: [p2-dev] Loading different P2 Profiles during runtime



Hi Pascal et al,

Sorry if I was unclear in my previous mail.
Our requirement is to dynamically select the P2-Profile to load the target 
product.
In different Profiles we have different sets of features installed and in 
runtime we need to give the user with an option of selecting the Profile to 
load the application.
I think this is somewhat similar to reverting a profile to a earlier state? 
What we need is to switch between profiles during runtime and load different 
target products.
I hope I made our intentions clear this time :)
I found this [1] in Eclipse BugZilla which I think is somewhat inline with what 
we are trying to achieve.
Appreciate any pointers on this.

Thanks,
Dileepa

[1] https://bugs.eclipse.org/bugs/show_bug.cgi?id=287619
_______________________________________________
p2-dev mailing list
[email protected]
https://dev.eclipse.org/mailman/listinfo/p2-dev







--
R. Ian Bull | EclipseSource Victoria | +1 250 477 7484
http://eclipsesource.com | http://twitter.com/eclipsesource
_______________________________________________
p2-dev mailing list
[email protected]
https://dev.eclipse.org/mailman/listinfo/p2-dev

_______________________________________________
p2-dev mailing list
[email protected]
https://dev.eclipse.org/mailman/listinfo/p2-dev

Reply via email to