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http://jira.codehaus.org/browse/MNG-2290?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_103822
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William Ferguson commented on MNG-2290:
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The work around for this is top specify the project#url and
project#distributionManangement#site#url in *every* POM.
Failure to do so means that :
If your parent POM defines its URLs as http://MyMachine/projects then the child
projects will be published to reachable (but unversioned) locations such as
http://MyMachine/projects/SomeProject on the projects site, but the site for
the parent POM will be published to the root of your projects site, generally
overwriting any general welcome page that might direct you to the other
projects.
If your parent POM defines its URLs as http://MyMachine/projects/${artifactId}
then the child projects will be published to locations such as
http://MyMachine/projects/SomeProject/SomeProject but the parent POM will get
published to an expected location like http://MyMachine/projects/MyPom.
So there is also inconsistency between a URL defined in a POM and one defined
in a parent POM.
Please, please make it consistent, preferably by having no automatic appending
of the artifactId for URLs defined in a parent POM and instead let us specify
the location using build properties like
http://MyMachine/projects/${artifactId}/${version} which are evaluated just
like every other build property. The current behaviour is inconsistent with
every other aspect of a Maven build.
> Generated URLs in POMs of child modules
> ---------------------------------------
>
> Key: MNG-2290
> URL: http://jira.codehaus.org/browse/MNG-2290
> Project: Maven 2
> Issue Type: Improvement
> Components: Inheritance and Interpolation
> Affects Versions: 2.0.4
> Reporter: Joerg Schaible
> Fix For: 2.0.x
>
>
> Maven has quite some elements where a URL or a path is modified automatically
> for child POMs (the ones I am currently aware of):
> - url
> - scm/connection
> - scm/developerConnection
> - scm/url
> - distributionManagement/site/url
> While expanding this path with "/${pom.artifactId}" sounds reasonable, this
> approach fails badly for complex projects with more hierarchy levels. Suppose
> we have a directory structure like:
> * project
> ** core
> *** provider
> **** commons
> **** impl1
> In this hierarchy all POMs for _project_, _core_ and _provider_ are of
> package type _pom_, while _commons_ and _impl1_ is of type _jar_. The
> "artifactId" approach now simply assumes that all POMs in the hierarchy are
> named like the current directory. This does simply not match. Suppose those
> jar artifacts are used in an enterprise or web app. Then every artifact is
> located in one single directory and therefore the names have to be unique.
> But if you decide to take an artifact name different to the directory name,
> you have to add the definition in every POM, because the scm elements are
> simply wrong.
> An even worse scenario are components that can be provided using different
> technologies. We have a lot of such structures:
> * component
> ** jar
> ** war
> ** ear
> * *_jar_:* the core functionality
> * *_war_:* the core functionality integrated and eccessible with a web
> application
> * *_ear_:* the complete component as enterprise app, if it makes sense to
> deploy the functionality on a different app server
> _component_ has a POM of package type _pom_; _jar_, _war_ and _ear_ have POMs
> with the according package type. All of the three POMs use the same
> artifactId though. In this case not only the scm elements break, but also the
> URLs for the site, since they are all the same for all three artifacts.
> All of this could have been avoided, if the expanded part is not the
> artifactId, but the basename of the current directory. Especially for the scm
> elements, this is IMHO the only valid assumption.
> It would already help us, if this auto-expansion could be turned off to allow
> the definition of a single property in each POM for a correct interpolation
> of those values, but there seems no such option ^1^. So you *have to* add
> those elements under all circumstances into every POM.
> 1) The _tagBase_ of the release plugin does no such auto-expansion, which
> makes it quite easy to use a property for it, that can be set individually in
> every POM without adding any plugin configuration.
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