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https://issues.apache.org/jira/browse/MNG-8537?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17937472#comment-17937472
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Guillaume Nodet commented on MNG-8537:
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bq. And if the files aren't XML, then namespaces aren't really being used at
all.
Yes, agreed. And that makes me think that there's no real XML tool processing
maven POMs, but the maven parser so far...
So while namespace support would be interesting, if we want to really address
that, we'd need a more extensible schema with the ability for extensions to
plug in.
> Maven 4 namespace should not change
> -----------------------------------
>
> Key: MNG-8537
> URL: https://issues.apache.org/jira/browse/MNG-8537
> Project: Maven
> Issue Type: Bug
> Reporter: Elliotte Rusty Harold
> Assignee: Elliotte Rusty Harold
> Priority: Blocker
>
> Just noticed that Maven 4 has a new namespace URL. The old namespace was
>
> [http://maven.apache.org/POM/4.0.0]
>
> The new one is
>
> [http://maven.apache.org/POM/4.1.0]
>
> Putting version numbers in namespaces is a known XML antipattern because it
> makes it extremely difficult and inconvenient to write tools that process
> both, even when they are much the same. XSLT, DOM, XQuery, JDOM, etc. —
> really any XML aware tool — is going to have problems with this.
> Model version 4.1.0 is not a new and different schema that completely breaks
> with the past. Most old elements from 4.0.0 are still present and still mean
> exactly the same thing: groupId, artifactId, name, dependency, and most
> others. There are new elements but that doesn't imply a new namespace. Adding
> a new namespace is asserting that all the elements are different.
> IMHO Maven 4 should not change the namespace URL.
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