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Simrel/Contributing to Simrel Aggregation Build

Revision as of 13:55, 21 December 2011 by David (Talk | contribs) (Updating contributions)

These instructions outline how to contribute to the Juno aggregation build for the common repository. The instructions are very similar to the instructions for Indigo. There are the following, relatively small changes:

  • the recommended or required version of b3 aggregator is different (this will likely require two instances of Eclipse installed, each with their own workspace -- one for 'indigo' and one for 'juno'.
  • the main aggregation model file was renamed to a more generic term, "simrel.b3aggr"
  • the normal rename of any cvs projects, test packages or urls ... they will now have 'juno' in place of 'indigo'

If at anytime, there are questions, issues or problems, don't hesitate to ask on cross-project mailing list, or open a cross-project bug.

Checkout CVS project

Check out project from If you do not have write access to this repository location, contact the webmaster, explaining which project you are working with, and CC the Planning Council chairperson (currently or open a bugzilla entry (with that same information).

Note: once per year, after SR1, approximately mid-October, anyone who has not committed anything to the "build" project (governed by callisto-dev Linux group) will simply be removed from that group. So, if you need write access again (after not needing it for a year) simply re-request to be added, again stating which project you are committing for. [Note: there is at least one id, 'genie', that is a member of callisto-dev that should not be removed, even though it will show no "commits", as it is required to be there for signing purposes. See bug 362436 for problems that result from removing it.]

Install the b3 Aggregator

  • Update as of 9/7/2011: Back to 0.2 version ... pretty sure it (and I) are ready now.
  • Update as of 8/12/11: For at least Juno M1, we are going to continue using the 0.1.x version of aggregator. [We will (likely) update to 0.2.x aggregator (and evolve model) later during Juno cycle.]
In Eclipse 3.6.2 install the b3 aggregator editor from the following URL:
  • Use the 0.2.x version of the b3 aggregator, running on Eclipse 3.7, installed from b3's "3.7 repo", at following URL:
  • Follow instructions to install the b3 Aggregator editor (and checkout the above mentioned CVS project). Tip: many find it preferable to have a separate workspace for this aggregation work, as it works with many p2 repositories and can add a lot of background processing as it works with all those repositories.
  • Open the file simrel.b3aggr using the Aggregator Model Editor
Tip: Having the model "loaded" and allowing it to update itself (staying current with latest contents of referenced repos) and syncing up the project on a regular basis, can often help you spot errors or inconsistencies with your own contributions, and allow fixes to be made before committing your own update to CVS.

For new project contributions

  • Tip: if you are nervous about making large changes you can always tag the CVS project before making large changes, so there is an obvious restore point. For example, you could tag with <youruserid>_pre<project>addition<datetime> or some such easily recognizable marker.
  • Create the following elements (New Child) under Aggregator Juno:
    • One or more Contacts (show Property View to specify Email and Name)
    • A Contribution (specify Label and link to Contact)
      • A Mapped Repository (specify Location: URL of your p2 repository)
        • Your Features (select name from features found in your repository, select Categories from pre-defined set, specify exact version to be included in aggregation under Version Range)
  • Select your Contribution and invoke Detach Resource from the context menu. Choose a filename like projectname.b3aggrcon (renaming this file at a later stage is not supported). For ease of bookkeeping, it is advisable to use the "exact" name of your project as it appears in the Eclipse Foundation databases, including top level and subproject names, as appropriate, for example, emf-validation.b3aggrcon is preferable to validation.b3aggrcon or webtools.b3aggrcon preferable to wtp.b3aggrcon.
  • Verify. To ensure that your contribution will not break the build, right-click on your contribution and select "Verify Repository".
  • Checkin. At this point, you are ready to checkin your contribution. You will need to synchronize and check in changes to the simrel.b3aggr file, as well as your projectname.b3aggrcon file.

Updating contributions

  • To change things like Contributors or Categories, or adding or removing features, you should use the b3 Aggregator with the top level simrel.b3aggr file ... as these things often have relationships that span files and you need to update, synchronize and checkin all effected files. Note: the Categories are normally only added or edited by Planning Council, so be sure large changes there have been discussed via bugzilla, etc. (You can do this via e-mail, or a bugzilla entry in cross-project category).
  • To change values of feature versions, or repository URLs, you can directly change your projectname.b3aggrcon file with text editor (or build scripts) and check those in, in isolation. Of course, you can and should still use the b3 aggregator editor, and it is often desirable to do so, as it will do a "workbench build" and will tell you if something is wrong. For example, if the repository URL does not point to a valid repository, you'll know about it right away, if you use the b3 Aggregator Editor.
  • Note that contributions, features, and repositories can be enabled or disabled, via property page. This allows temporary changes with minimal disruption. For example, if you disable a contribution or feature, it will be left out of a category, without having to also edit the category). This is especially useful if there is a leaf component that is "broken" and should temporarily be omitted from the build. Important: One implication of this is you will need to sometimes re-enable your contribution or feature, even if you did not disable it. These are sometimes disabled by others -- without notice -- especially if a contribution or feature is causing build breaks for an extended period of time especially if there's been no communication explaining it or describing status or outlook on cross-project list. Of course, fixing the issue is the desired first choice, as disabling one contribution or feature will often require other contributions or features to be disabled simply because they depend on the broken one.


The overall categories used in the common repository are the responsibility of the Planning Council (in that they have the final say about any new ones, removals, etc.). So ... please open a cross-project bug if you'd like to propose new categories or some reorganization. But otherwise, feel free to add or remove your features to what ever categories you think are appropriate (using the full aggregator editor, since two files are changed when doing so) and others will open bugs if something seems wrong, or in the wrong category.

Runtime Target Platform Category

Some features (or bundles) are not intended to be installed into an IDE ... they do not contribute to the IDE (such as menu items, etc.). By convention, such features should be placed in the "EclipseRt Target Platform Category". This would be the case for, say, a "server" that someone was coding and testing for. In some cases, a runtime feature might "cause harm" (or, change behavior) if a user mistakenly installed it into their IDE. To prevent a feature (or bundle) from being installed into an IDE, the current "process" is for that feature or bundle to specify a negative requirement on a "magic IU". This is usually done in a p2.inf file, with contents of

# this bundle should not be installed into IDE
requires.0.namespace = A.PDE.Target.Platform = Cannot be installed into the IDE
requires.0.range = 0.0.0

The details of the "magic" solution may change in Juno, as a cleaner solution is being discussed in bug 365004 ... it would be a similar "negative requirement" but just may be on a different (non magic) IU.

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