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https://issues.apache.org/jira/browse/MNG-5862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17182048#comment-17182048
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Dániel Dékány commented on MNG-5862:
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It's important in the use case of Maven that all the necessary files are
uploaded/downloaded to/from the target repository. So I guess XInclude would
make doing that significantly more complicated. Maybe if it they add
restrictions like the XIncluded file must be in the same directory as the
POM... I don't know, I haven't researched this. I was just looking for the same
feature this issue is about.
If XInclude doesn't work for Maven, then I don't see why what I'm saying
wouldn't. Something like {{<snippets><foo><a>1</a><b>2</b></foo></snippets>}}
and then {{<snippets.foo />}} at some supported place, like inside
{{configuration}}-s.
> POM XML parser needs XInclude and/or XML Entity support
> -------------------------------------------------------
>
> Key: MNG-5862
> URL: https://issues.apache.org/jira/browse/MNG-5862
> Project: Maven
> Issue Type: New Feature
> Components: POM
> Reporter: Jason Vas Dias
> Priority: Major
>
> POM XML files can get very large and repetitive , and not all modularizaton
> scenarios can be resolved by using a Super POM as described in MNG-1980 ,
> and would be easily resolved if only the POM parser supported XIncludes or
> XML Entities - neither are supported.
> Here is one such scenario:
> I have a large project that has several SureFire plugin based "Test Suites" -
> each test suite uses a "common-at-classes" module of common test classes,
> and is essentially identical except in its XML configuration "test resource"
> files
> - so the structure is like this :
> {quote}
> {noformat}
> Top Level project directory:
> ./pom.xml
> ./acceptance-tests/pom.xml
> ./acceptance-tests/common-at-classes/pom.xml
> ./acceptance-tests/test-suite_#1/pom.xml
> ...
> ./acceptance-tests/test-suite_#N/pom.xml
> {noformat}
> {quote}
> There are @ 10 ( being upgraded to @ 20) "test suites",
> which all do exactly the same thing, but with slightly
> different "test resource" configuration files,
> and depend on the 'acceptance-tests/common-at-classes" JAR .
> We can modularize all the test-suite dependencies OK in the single
> common-at-classes/pom.xml location .
> But their is no way to modularize the actual XML code that runs each
> test-suite with plugin executions - these plugin execution stanzas can
> currently ONLY
> be in each test-suite#N directory, even though they are identical.
> It would make no sense to have the "Super POM" : acceptance-tests/pom.xml
> contain the plugin executions to run any single test suite ; nor can the
> common-at-classes/pom.xml contain the plugin execution to run any
> test suite, since a test suite run depends on the customized test resource
> files that only exist in each "test_suite#N/" sub-project .
> So the only solution currently available with Maven is to copy the XML stanzas
> that configure and run the test suite ( about 400 lines of XML ) into each of
> the 10-20 test-suite/pom.xml files ; this is all because Maven does not
> support
> XML XInclude or XML Entities; if it did, we could put all this code into one
> XML
> file provided by the common-at-classes project, and include it in each test
> suite .
> The test suite XML is then a nightmare to maintain, consistently for all test
> suites.
> This is becoming such a problem that I am considering making the root project
> POM do nothing more than transform the test-suite poms with XML XInclude-s
> (using an external XML processor), creating a new copy of the whole project,
> and then run an exec plugin goal which runs maven with the transformed POMs.
> Please, please can we have some form of XInclude or XML Entity support , or
> support for an "<include ...>" element, in the POM parser !
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