[
http://jira.codehaus.org/browse/MNG-4472?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul Benedict updated MNG-4472:
-------------------------------
Description:
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 *immediately*; 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 network is
accessed for this use case.
{code}
[INFO] Scanning for projects...
Downloading:
http://repo1.maven.org/maven2/org/apache/maven/its/mng/test/0.1/test-0.1.pom
[ERROR] The build could not read 1 project -> [Help 1]
[ERROR] The project org.apache.maven.its.mng:test:0.1
(D:\patches\MNG-4472\pom.xml) has 2 errors
[ERROR] The parent element cannot have the same ID as the project.
[ERROR] Non-resolvable parent POM org.apache.maven.its.mng:test:0.1 for
org.apache.maven.its.mng:test:0.1: Failed to resolve POM for
org.apache.maven.its.mng:test:0.1 due to Missing:
----------
1) org.apache.maven.its.mng:test:pom:0.1
----------
1 required artifact is missing.
for artifact:
org.apache.maven.its.mng:test:pom:0.1
from the specified remote repositories:
central (http://repo1.maven.org/maven2, releases=true, snapshots=false)
-> [Help 2]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e
switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please
read the following articles:
[ERROR] [Help 1]
http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
[ERROR] [Help 2]
http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException
{code}
was:
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.
> [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
> Attachments: MNG-4472.zip
>
>
> 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 *immediately*; 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 network
> is accessed for this use case.
> {code}
> [INFO] Scanning for projects...
> Downloading:
> http://repo1.maven.org/maven2/org/apache/maven/its/mng/test/0.1/test-0.1.pom
> [ERROR] The build could not read 1 project -> [Help 1]
> [ERROR] The project org.apache.maven.its.mng:test:0.1
> (D:\patches\MNG-4472\pom.xml) has 2 errors
> [ERROR] The parent element cannot have the same ID as the project.
> [ERROR] Non-resolvable parent POM org.apache.maven.its.mng:test:0.1 for
> org.apache.maven.its.mng:test:0.1: Failed to resolve POM for
> org.apache.maven.its.mng:test:0.1 due to Missing:
> ----------
> 1) org.apache.maven.its.mng:test:pom:0.1
> ----------
> 1 required artifact is missing.
> for artifact:
> org.apache.maven.its.mng:test:pom:0.1
> from the specified remote repositories:
> central (http://repo1.maven.org/maven2, releases=true, snapshots=false)
> -> [Help 2]
> [ERROR]
> [ERROR] To see the full stack trace of the errors, re-run Maven with the -e
> switch.
> [ERROR] Re-run Maven using the -X switch to enable full debug logging.
> [ERROR]
> [ERROR] For more information about the errors and possible solutions, please
> read the following articles:
> [ERROR] [Help 1]
> http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException
> [ERROR] [Help 2]
> http://cwiki.apache.org/confluence/display/MAVEN/UnresolvableModelException
> {code}
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