Fix multi-repository support in the release plugin and make it work with e.g.
mercurial subrepositories
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Key: MRELEASE-627
URL: http://jira.codehaus.org/browse/MRELEASE-627
Project: Maven 2.x Release Plugin
Issue Type: New Feature
Affects Versions: 2.2
Reporter: Henning Schmiedehausen
Attachments: release-plugin-patch
The maven-release-plugin is pretty much designed to work with a single
repository and tag and branch from this. As soon as a project tree is more
complex and e.g. uses nested or multiple repositories (such as the Mercurial
subrepos), it fails.
The attached patch fixes most of the use cases that allow releasing large
(reactor) projects that span multiple projects and use one repository per
project.
New properties:
revertOrder (boolean) - Default: false
Reverts the order in which commit, tag and branch process multi-repos. E.g. in
Mercurial, the main repository (which contains the subrepos) must be processed
last, because it implicitly records state of the relationship between the main
and the sub repository. If it gets committed first, then this state is not
recorded correctly. By reverting the order, the main repository is committed
last.
commitAllChanges (boolean) - Default: false
The release plugin tries to explicitly list which files it commits. However, in
the case of a multi-repository tree, in then tries e.g. to commit repo/pom.xml,
repo/a/pom.xml and repo/b/pom.xml in the context of "repo" which then fails
(because repo/a/pom.xml and repo/b/pom.xml are actually part of the subrepos a
and b). Setting this parameters omits the list of files and tells the SCM to
"commit everything". E.g. Mercurial then picks up the changes correctly and
also records the implicit state between master and sub repositories correctly.
tagByProject, branchByProject (boolean) - Default: false
Similar to the existing 'commitByProject', these options select whether a tag
or a branch should be created by running the tag command in the root of the
tree or by looping through all projects and tagging or branching them
one-by-one. Default is to tag in the root.
tagRequiresCommit / branchRequiresCommit (boolean) - Default: false
Mercurial manages tags by adding entries to the '.hgtags' file, which is
managed implicitly by the SCM. If a subrepository gets tagged as part of a
larger, multi-repo project, then the changes must be explicitly committed, else
they don't get picked up by the main repository. This sounds more complicated
than it actually is, the summary is that "this must be 'true' for Mercurial and
probably "false" for everything else.
Those changes *should* work with the 1.4 SCM provider, but were tested only
with the 1.5-SNAPSHOT release. It also benefits from fixing the pushChanges
support in the Mercurial provider.
If you want to test drive this patch, you should also be interested in SCM-587.
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