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How to get Bundle dependencies ? [message #537715]

Thu, 03 June 2010 13:06

Rustam

Messages: 20
Registered: January 2010

Junior Member

Hi,

How can I get bundle dependencies ? As I understand there is interface BundleDescription for this purpose.. or not ? Smile

How can I use it ?

Could you please explain us how can we get list of bundle dependencies.. for example I tried to install and start bundle:

Bundle bundle = bundleContext.installBundle( path );
bundle.start() // Ooops.. exceptions. because not all dependencies resolved

let's imagine I want to insert following code:
BundleXXX[] depends = bundle.getDependencies();
if( depens == null ) bundle.start(): // Smile

)

I hope I explain my request very clearly Wink

Thanks a lot for your answer and your work !

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Re: How to get Bundle dependencies ? [message #537845 is a reply to message #537715]

Thu, 03 June 2010 19:38

Andrew Niefer

Messages: 990
Registered: July 2009

Senior Member

Use PlatformAdmin#getState() to get the State for the running system.
State#getBundle( bundle.getBundleId() ) gives you a BundleDescription
corresponding to your bundle.

BundleDescription has methods to get dependencies. Also, StateHelper
contains methods that might be interesting.

To go backwards from a BundleDescription to a Bundle you would also need the
BundleContext#getBundle() with BundleDescription#getBundleId()

-Andrew

Rustam wrote:

> Hi,
>
> How can I get bundle dependencies ? As I understand there is interface
> BundleDescription for this purpose.. or not ? :) How can I use it ?
>
> Could you please explain us how can we get list of bundle dependencies..
> for example I tried to install and start bundle:
>
> Bundle bundle = bundleContext.installBundle( path );
> bundle.start() // Ooops.. exceptions. because not all dependencies
> resolved
>
> let's imagine I want to insert following code:
> BundleXXX[] depends = bundle.getDependencies();
> if( depens == null ) bundle.start(): // :))
>
> I hope I explain my request very clearly ;)
>
> Thanks a lot for your answer and your work !

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Re: How to get Bundle dependencies ? [message #537946 is a reply to message #537845]

Fri, 04 June 2010 09:54

Rustam

Messages: 20
Registered: January 2010

Junior Member

Hi,

Thanks ! But it's not working with bundles which are not installed.

Another words, how does system generate list of unresolved bundles when unresolved bundle exception occurs ?

Thanks.

/Rustam

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Re: How to get Bundle dependencies ? [message #537954 is a reply to message #537946]

Fri, 04 June 2010 10:08

Rustam

Messages: 20
Registered: January 2010

Junior Member

aha, ok, I found out method getRquiredBudles which return BundleSpecification array of dependencies bundles

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Re: How to get Bundle dependencies ? [message #537999 is a reply to message #537954]

Fri, 04 June 2010 13:14

Thomas Watson

Messages: 503
Registered: July 2009

Senior Member

You should also consider using a provisioning system to do this work for you. In Equinox we have p2 which does this kind of analysis and ensures that you install bundles that will resolve.

Tom.

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