ClearCase / Support for checking out from a tag and auto-creation of config
specs
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Key: SCM-287
URL: http://jira.codehaus.org/browse/SCM-287
Project: Maven SCM
Issue Type: New Feature
Components: maven-scm-provider-clearcase
Affects Versions: 1.0
Reporter: Arne Degenring
Attachments: patch-maven-scm-provider-clearcase.txt,
patch-maven-scm-site.txt
A major limitation of the ClearCase plugin so far has been the missing support
for checking out from a tag. As a consequence, the Maven release plugin could
not be used. I implemented checking out from a tag, by supporting the automatic
creation of config specs.
The ClearCase SCM provider so far forced the user to create a config spec file
at an external location and provide a link to it within the SCM url, e.g.:
scm:clearcase:my_module_view:\\myserver\clearcase\configspecs\my_module.txt
This URL format is still supported as it gives the user a maximum flexibility
regarding config specs. However, it is quite unconvenient for users to provide
config spec files in an external location. And for checking out from a tag, the
config spec needs to be rewritten anyway. So, as an alternative, the user now
can provide a SCM url like the following:
scm:clearcase:my_module_view:load /MY_VOB/my/project/directory
Such an url contains one load rule instead of a config spec file location. It
is used by the ClearCase plugin to generate the following config spec in case
no version tag has been specified:
element * CHECKEDOUT
element * /main/LATEST
load <load_directory>
In case a tag has been specified, the following config spec is created:
element * CHECKEDOUT
element * <tag>
element -directory * /main/LATEST
load <load_directory>
I expect these auto-generated config specs to be sufficient and appropriate in
at least 80% of the cases. The new functionality improves the ClearCase SCM
integration significantly in these cases (much easier to use and more
powerful). So, please apply the attached patch for
maven-scm-provider-clearcase, including a patch for the documentation site. As
the current URL format is still fully supported, this patch should not affect
existing builds.
(Afterwards, the maven-release-manager used by the Release plugin, can easily
be completed by a ClearCase-specific ScmTranslator implementation to make the
Release plugin fully usable with ClearCase.)
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