[regression] Circular POM not detected
--------------------------------------
Key: MNG-4472
URL: http://jira.codehaus.org/browse/MNG-4472
Project: Maven 2
Issue Type: Bug
Components: Reactor and workspace
Affects Versions: 3.0-alpha-4
Reporter: Paul Benedict
If I were to specify a project with itself as a parent, Maven 2.2.1 gives this
response:
{code}
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).
Project ID: org.apache.maven.its.mng:test
Reason: Parent element is a duplicate of the current project for project
org.apache.maven.its.mng:test
[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.reactor.MavenExecutionException: Parent element is a duplicate
of the current project for project org.apache.maven.its.mng:test
at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:404)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:272)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:138)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at
org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:60)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
Caused by: org.apache.maven.project.ProjectBuildingException: Parent element is
a duplicate of the current project for project org.apache.maven.its.mng:test
{code}
Maven 3 doesn't detect this circularity; it tries to download the parent by
going through my remote repositories. The end result is still a failure since
it can't find itself, but it's a regression since the error condition is no
longer detected.
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