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Re: [gef-dev] Gef Build questions
Bundles are versioned based on x.y.z in Manifest.mf, and qualifier which comes from the mapfile. If the o.e.gef plugin is tagged w/ version v20090508-1500, then you'll get 

  o.e.gef_3.5.0.v20090508-1500.jar (note the dash).
If you want to be able to build from HEAD (override the tags in the map), you can use fetchTag=HEAD. In this case, you'll get 

  o.e.gef_3.5.0.HEAD.jar (note the branch name).
But, if you also set forceContextQualifier=v${timestampOfTheBuild}, then you'll get 

  o.e.gef_3.5.0.v200905081503.jar (note the dash is now gone)
This is doable, but I can't guarantee it works ATM in the Common Modeling Build. It does work in the Athena build, but doc generation is broken there. :( You can try setting these values in gef.releng/buildAll.xml if you'd like, but bear in mind such a change will affect both N and I builds.
You can follow whatever process you want for tagging or for building directly from HEAD. The current flow, as decided by Anthony, is to tag weekly so that all builds are done from that tag, and are therefore easily reproduceable. It also makes updating from week to week easier since the update site contains less renumbered jars.
Should you manually tag& release mid-week, your newer released changes will appear in that day's N build. Currently, the only difference between N and I builds is that Ns are not signed and Is are. Content-wise, they both pull from the same maps. 

> Does our auto tagging script only update the map file when things have
> actually changed?  The reason I ask is because p2 only downloads things
> that have changed, and it knows this by version numbers.  So if the
> bundles in IBuild I and IBuild I+1 have the same version numbers, then
> we know they have the same content, and p2 will not bother retrieving
> the artifacts.
>
> Also, my understanding of tagging is that it is a way of indicating what
> is ready for integration (difference between a nightly and integration
> build).
>
> On the other hand, I understand that we are a small team and without
> full-time releng support, the headaches with tagging + building may not
> justify the benefits.


--
Nick Boldt :: http://wiki.eclipse.org/User:Nickb
Release Engineer :: Eclipse Modeling & Dash Athena

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