Dependency not retrieved with maven 3 although it was with maven 2
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Key: MNG-4600
URL: http://jira.codehaus.org/browse/MNG-4600
Project: Maven 2 & 3
Issue Type: Bug
Components: Dependencies
Affects Versions: 3.0-alpha-7
Environment: Apache Maven 3.0-alpha-7 (r921173; 2010-03-09
23:31:07+0100)
Java version: 1.5.0_17
Java home: c:\projet\MM\outils\jdk\1.5.0\jre
Default locale: fr_FR, platform encoding: Cp1252
OS name: "windows xp" version: "5.1" arch: "x86" Family: "windows"
Reporter: Baptiste MATHUS
Attachments: bug-maven.zip
The situation is quite complex to explain. I've a parent pom that defines
dependencies in depMgmt. There's two projects in the multimodule project, the
second depending on the first.
Excerpt (parent/depMgmt):
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<scope>runtime</scope>
<optional>true</optional>
First child (redefines scope only):
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<scope>compile</scope>
</dependency>
Second child:
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
</dependency>
<dependency>
<groupId>m3pb</groupId>
<artifactId>subproject1</artifactId>
<version>${project.version}</version>
</dependency>
When running with maven 2, it works. When ran with maven 3, it fails on the
second project, with a NoClassDefFoundError on the logback jar.
I seem to understand this is actually a bug in maven 2: as the depMgmt defines
optional=true, it shouldn't have been working in maven2 without redeclaring the
dependency in the second project.
>From my understanding:
* With maven 2, the transivity is taken in account and gives logback through
the subproject1 link (from the second)
* With maven 3, this just doesn't work and this is the correct behaviour.
Please excuse my basic analysis.
I'm attaching a test project to let see more precisely the problem.
If you need any help, please let me know.
Cheers
--
Baptiste
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