Re: Fw: [p2-dev] How to reference a file in a feature's home directory

[Simon Kaegi <Simon_Kaegi@xxxxxxxxxx>]

As I mentioned earlier, the usability around creating native IUs is still poor. For the greatest flexibility you could write a tool that integrates in with the "publisher" providing the appropriate advice to know how to generate the Native IU and how to attach it into a product.
We talked briefly about adding a simple utility to do this with a p2.inf and an artifact but have not done this for 3.5. With that said this is something we could offer at any time as an independent stand-alone piece.

For now, the eclipse SDK packages it's native IUs in product/feature root files (e.g. http://help.eclipse.org/stable/index.jsp?topic=/org.eclipse.pde.doc.user/tasks/pde_rootfiles.htm) and until we have better authoring tooling this is the approach I would suggest.
If a root file is specified for a feature/product an extra {feature_name}_root IU is generated at metadata publishing time. By default this IU just adds the actions to unzip relative to the install folder however you can also further customize the IU to do what you want.
(If you read through the equinox newsgroup as well as the dev-list you can see some of the work Mark Melvin has been doing with this approach.)

The specific technique I would use would be to provide an IUFragment to customize the root file IU using p2.inf. This is what Mark's been doing with the exception that I think he's overriding the root file IU instead of just providing a fragment for it.

It's RC1 week so things are bound to be interesting however when I get a moment I'll put together a project set to illustrate.

-Simon

Samuel Wu---05/10/2009 10:08:06 PM---Can you please provide some instruction on how to create a native IU? The reason I picked up feature was that I didn't know the

From:	Samuel Wu/Toronto/IBM@IBMCA
To:	p2-dev@xxxxxxxxxxx
Date:	05/10/2009 10:08 PM
Subject:	Fw: [p2-dev] How to reference a file in a feature's home directory

---

Can you please provide some instruction on how to create a native IU? The reason I picked up feature was that I didn't know there was another alternative. Thanks.

Best Regards

Samuel Wu

----- Forwarded by Samuel Wu/Toronto/IBM on 05/10/2009 10:06 PM -----

Simon Kaegi/Ottawa/IBM@IBMCA
Sent by: p2-dev-bounces@xxxxxxxxxxx

05/08/2009 03:35 PM

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Subject	Re: [p2-dev] How to reference a file in a feature's home directory

The @artifact syntax has real problems when you're mixing native touchpoint actions with eclipse touchpoint artifacts so to be honest there currently isn't a good and consistent way to reference the location where the feature was placed in unzip or copy. What happens in your case is that when use @artifact the action will look for an artifact in the native artifact cache instead of the eclipse touchpoint's cache. I'm not really happy with the situation and have opened https://bugs.eclipse.org/bugs/show_bug.cgi?id=275404 to see if we can do something with better consistency.

Having a good access to the artifact location is reasonable however one concern with the approach you show is around treating features like file containers with actions to act on their contents. This is a bit of a re-purposing of feature; it would seem far more sensible to create an independent Native IU and unzip it's artifact and move it's files around. There are still usability issues with authoring native IUs and we can work on this however you'll be better off not overloading features in this way if you can craft native IUs for the short-term.

-Simon

Samuel Wu---05/07/2009 01:30:26 PM---Hello there,

From:	Samuel Wu/Toronto/IBM@IBMCA
To:	p2-dev@xxxxxxxxxxx
Date:	05/07/2009 01:30 PM
Subject:	[p2-dev] How to reference a file in a feature's home directory

---

Hello there,
I'm trying to use the touch point unzip and copy to distribute the files in the file system. I wonder how to reference the file in the feature's home directory. For instance, I have a feature project which contains a zip file test.zip. I want to unzip it to c:\temp. I tried unzip(source:@artifact/test.zip,target:c${#58}/temp) but it doesn't seem to work. 
The following copy action doesn't work either.
copy(source:@aritifact/temp/patch.txt,target:c${#58}/temp/patch,overwrite:true)

Can you please suggest what's the right syntax? Thanks a lot.

Best Regards

Samuel Wu_______________________________________________
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