[MNG-6036] Allow proper namespace usage for pom.xml

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.3.9
• Fix Version/s: 4.0.0-alpha-9
• Component/s: Core

Environment

Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11-10T17:41:47+01:00)
Maven home: /usr/local/Cellar/maven/3.3.9/libexec
Java version: 1.8.0_40, vendor: Oracle Corporation
Java home: /Library/Java/JavaVirtualMachines/jdk1.8.0_40.jdk/Contents/Home/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "mac os x", version: "10.11.4", arch: "x86_64", family: "mac"

• Assignee: Guillaume Nodet
• Reporter: Roland Huss
• Created: 05/Jun/16 05:03
• Updated: 08/Dec/23 16:41
• Resolved: 27/Nov/23 23:12

Description

When I use the following pom.xml in order to allow an XSD for my custom plugin configuration:

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/POM/4.0.0">

....
    <plugin>
         ....
         <m:configuration xmlns:m="http://maven.apache.org/POM/4.0.0" xmlns="http://fabric8.io/fabric8-maven-plugin">
             <myConfig>.....</myConfig>
         </m:configuration>
    </plugin>
    ....
</project>

I get this error:

[INFO] Scanning for projects...
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] Malformed POM /Users/roland/Development/docker/docker-maven-plugin/samples/data-jolokia-demo/pom.xml: Unrecognised tag: 'm:configuration' (position: START_TAG seen ...che.org/POM/4.0.0" xmlns="http://fabric8.io/fabric8-maven-plugin">... @91:117)  @ /Users/roland/Development/docker/docker-maven-plugin/samples/data-jolokia-demo/pom.xml, line 91, column 117
 @
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR]
[ERROR]   The project io.fabric8:docker-jolokia-demo:0.15-SNAPSHOT (/Users/roland/Development/docker/docker-maven-plugin/samples/data-jolokia-demo/pom.xml) has 1 error
[ERROR]     Malformed POM /Users/roland/Development/docker/docker-maven-plugin/samples/data-jolokia-demo/pom.xml: Unrecognised tag: 'm:configuration' (position: START_TAG seen ...che.org/POM/4.0.0" xmlns="http://fabric8.io/fabric8-maven-plugin">... @91:117)  @ /Users/roland/Development/docker/docker-maven-plugin/samples/data-jolokia-demo/pom.xml, line 91, column 117 -> [Help 2]

It would be awesome if the XML parser would resolve namespaces properly. Its not about adding namespace features, only for plain XML resolving (each decent XML these days should be able to do this transparently).

Except for https://cwiki.apache.org/confluence/display/MAVEN/Moving+forward+with+the+POM+data+model I couldn't find any statement when namespaces are supported or tolerated. Are there any plans for this (and maybe also to relax the schema constraints on the <configuration> tag) ?

See also https://github.com/rhuss/poblano/issues/19 for a use case.

Issue Links

• is related to: MNG-2715 Maven does not comply to XML rules regarding prefixes.
• links to: GitHub Pull Request #1318