Re: [p2-dev] Using p2 expression or QL to query all IUs which provide a

[Thomas Watson <tjwatson@xxxxxxxxxx>]

What if you wanted the latest version of the IU for a bundle?

new ExpressionContextQuery(IInstallableUnit.class, "latest(x | x.providedCapabilities.exists(p | p.namespace == 'osgi.bundle'))");

Tom



Thomas Hallgren ---02/23/2010 11:46:08 AM---Hi Tom,

From:	Thomas Hallgren <thomas@xxxxxxx>
To:	P2 developer discussions <p2-dev@xxxxxxxxxxx>
Date:	02/23/2010 11:46 AM
Subject:	Re: [p2-dev] Using p2 _expression_ or QL to query all IUs which provide a capability in a specific namespace

---

Hi Tom,

On 02/23/2010 05:38 PM, Thomas Watson wrote:
>
> What is the _expression_ in p2 QL for querying all IUs in a repository 
> that provide a capability with a specific namespace? For example, all 
> IUs providing the osgi.bundle namespace.
>
Try this:

  new ExpressionQuery(IInstallableUnit.class,
    "providedCapabilities.exists(p | p.namespace == 'osgi.bundle')");

> Is there some documentation on using the QL for querying provided 
> capabilities in general?
>
All we have right now is the wiki page and it's not 100% up-to-date. 
It's now next on my todo list.

http://wiki.eclipse.org/Query_Language_for_p2

HTH,
Thomas Hallgren

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