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https://issues.apache.org/jira/browse/MRESOLVER-390?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17775098#comment-17775098
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ASF GitHub Bot commented on MRESOLVER-390:
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cstamas merged PR #322:
URL: https://github.com/apache/maven-resolver/pull/322
> Customize graph visiting strategy
> ---------------------------------
>
> Key: MRESOLVER-390
> URL: https://issues.apache.org/jira/browse/MRESOLVER-390
> Project: Maven Resolver
> Issue Type: Improvement
> Components: Resolver
> Reporter: Tamas Cservenak
> Priority: Major
> Fix For: 2.0.0
>
>
> The classpath built by Maven seems off, see MNG-6357 and there is even a
> reproducer.
> Reason is simple: we use
> [DF|https://github.com/apache/maven-resolver/blob/master/maven-resolver-util/src/main/java/org/eclipse/aether/util/graph/visitor/AbstractDepthFirstNodeListGenerator.java]
> derivatives to create classpath.
> Fix: Resolver (and thus Maven) had "wired in" strategy to flatten dependency
> graph into list, and it was always "preOrder", while there existed alternate
> solutions like "postOrder". This PR introduces "levelOrder" as asked by
> users, and also makes it configurable (via session config) which strategy
> should be used, and exposes helper classes and methods.
> Now session can be configured to use following strategies to flatten the
> graph:
> * "preOrder" -- as before
> * "postOrder" -- was already present
> * "levelOrder" -- as asked by users, artifact list is ordered by their depth
> (distance from root)
> By default, this PR introduces NO behavior changes, but opens configuration
> that does allow to alter these.
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