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From "J. Michael McGarr (JIRA)" <j...@codehaus.org>
Subject [jira] Created: (MNG-4451) Parametized <groupId/> declarations fail in two level deep multi-module project
Date Tue, 17 Nov 2009 15:46:55 GMT
Parametized <groupId/> declarations fail in two level deep multi-module project
-------------------------------------------------------------------------------

                 Key: MNG-4451
                 URL: http://jira.codehaus.org/browse/MNG-4451
             Project: Maven 2
          Issue Type: Bug
          Components: Bootstrap & Build
    Affects Versions: 2.2.1
         Environment: Windows XP, JDK 1.6.0_16
            Reporter: J. Michael McGarr


We utilized the appfuse 2.x multi-module project setup where the modules of the project declare
their own <groupId/> value as:
{quote}
<groupId>$[pom.parent.groupId].$[pom.parent.artifactId]</groupId>
{quote}

(note: replaced the curly braces with brackets due to a wiki error) 
When you add a second level of modules, this approach does not seem to work in Maven.  The
second level child module, which declares it parent to be a first level child module.  It
appears that the parameter declaration in the first-level module is ambiguous or is resolving
to value as seen by the second-level module.  This can be seen below in the output of the
error the Maven reactor provides.  

I was able to work around this error by changing the parametized groupId declaration in the
first-level module pom and making it explicit.  If there is something wrong with this approach
or another parametized setting I need to use, please let me know.

{quote}
C:\DEV\workspace\parent>mvn clean install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[ERROR] FATAL ERROR
[INFO] ------------------------------------------------------------------------
[INFO] Error building POM (may not be this project's POM).


Project ID: com.maventest.parent.first-level:second-level:jar:null

Reason: Cannot find parent: com.maventest.parent:first-level for project: com.maventest.parent.first-level:second-level:jar:null
for project com.maventest.parent.first-level:second-level:jar:null


[INFO] ------------------------------------------------------------------------
[INFO] Trace
org.apache.maven.reactor.MavenExecutionException: Cannot find parent: com.maventest.parent:first-level
for project: com.maventest.parent.first-level:second-level:jar:null for project com.maventest.parent.first-level:second-level:jar:null
        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: Cannot find parent: com.maventest.parent:first-level
for project: com.maventest.parent.first-level:second-level:jar:null for project com.maventest.parent.first-level:second-level:jar:null
        at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(DefaultMavenProjectBuilder.java:1396)
        at org.apache.maven.project.DefaultMavenProjectBuilder.buildInternal(DefaultMavenProjectBuilder.java:823)
        at org.apache.maven.project.DefaultMavenProjectBuilder.buildFromSourceFileInternal(DefaultMavenProjectBuilder.java:508)
        at org.apache.maven.project.DefaultMavenProjectBuilder.build(DefaultMavenProjectBuilder.java:200)
        at org.apache.maven.DefaultMaven.getProject(DefaultMaven.java:604)
        at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:487)
        at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:560)
        at org.apache.maven.DefaultMaven.collectProjects(DefaultMaven.java:560)
        at org.apache.maven.DefaultMaven.getProjects(DefaultMaven.java:391)
        ... 12 more
Caused by: org.apache.maven.project.ProjectBuildingException: POM 'com.maventest.parent:first-level'
not found in repository: Unable to download the artifact from any repository

  com.maventest.parent:first-level:pom:1.0-SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2)

 for project com.maventest.parent:first-level
        at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:605)
        at org.apache.maven.project.DefaultMavenProjectBuilder.assembleLineage(DefaultMavenProjectBuilder.java:1392)
        ... 20 more
Caused by: org.apache.maven.artifact.resolver.ArtifactNotFoundException: Unable to download
the artifact from any repository

  com.maventest.parent:first-level:pom:1.0-SNAPSHOT

from the specified remote repositories:
  central (http://repo1.maven.org/maven2)


        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:228)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:90)
        at org.apache.maven.project.DefaultMavenProjectBuilder.findModelFromRepository(DefaultMavenProjectBuilder.java:558)
        ... 21 more
Caused by: org.apache.maven.wagon.ResourceDoesNotExistException: Unable to download the artifact
from any repository
        at org.apache.maven.artifact.manager.DefaultWagonManager.getArtifact(DefaultWagonManager.java:404)
        at org.apache.maven.artifact.resolver.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:216)
        ... 23 more
[INFO] ------------------------------------------------------------------------
[INFO] Total time: < 1 second
[INFO] Finished at: Tue Nov 17 09:57:27 EST 2009
[INFO] Final Memory: 2M/4M
[INFO] ------------------------------------------------------------------------
{quote}

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