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Posted to issues@maven.apache.org by "Joerg Schaible (JIRA)" <ji...@codehaus.org> on 2009/12/11 08:41:55 UTC
[jira] Created: (MDEP-245) goal to check classpath for duplicate
resources/classes
goal to check classpath for duplicate resources/classes
-------------------------------------------------------
Key: MDEP-245
URL: http://jira.codehaus.org/browse/MDEP-245
Project: Maven 2.x Dependency Plugin
Issue Type: New Feature
Reporter: Joerg Schaible
Assignee: Brian Fox
Priority: Minor
The classpath sometimes contains unintended duplicate resources and classes e.g.:
# an artifact is present in two different versions at the same time, because it changed its groupId or artifactId, but no relocation POM has been provided by the artifact's author
# an artifact has been split into several artifacts (avalon-famework => avalon-framework-api and avalon-framework-impl)
# an artifact has a collection of "foreign" classes (CGLIB 2.x contains stuff from ASM 1.5)
A new goal of the dependency plugin might detect such cases. Obviously there are cases, when this is expected (stax-api implements stuff provided also by JDK 6) or cannot be avoided in general (even xpp3_min contains two classes from xmlpull-api) or is even part of the spec (SPI files in META-INF/services).
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[jira] Commented: (MDEP-245) goal to check classpath for duplicate
resources/classes
Posted by "Mirko Friedenhagen (JIRA)" <ji...@codehaus.org>.
[ http://jira.codehaus.org/browse/MDEP-245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=202391#action_202391 ]
Mirko Friedenhagen commented on MDEP-245:
-----------------------------------------
Just a link to the discussion: http://old.nabble.com/Maven-Plugin-to-detect-duplicate-class-files-in-a-e.g.-WAR-ts26658458.html
> goal to check classpath for duplicate resources/classes
> -------------------------------------------------------
>
> Key: MDEP-245
> URL: http://jira.codehaus.org/browse/MDEP-245
> Project: Maven 2.x Dependency Plugin
> Issue Type: New Feature
> Reporter: Joerg Schaible
> Assignee: Brian Fox
> Priority: Minor
>
> The classpath sometimes contains unintended duplicate resources and classes e.g.:
> # an artifact is present in two different versions at the same time, because it changed its groupId or artifactId, but no relocation POM has been provided by the artifact's author
> # an artifact has been split into several artifacts (avalon-famework => avalon-framework-api and avalon-framework-impl)
> # an artifact has a collection of "foreign" classes (CGLIB 2.x contains stuff from ASM 1.5)
> A new goal of the dependency plugin might detect such cases. Obviously there are cases, when this is expected (stax-api implements stuff provided also by JDK 6) or cannot be avoided in general (even xpp3_min contains two classes from xmlpull-api) or is even part of the spec (SPI files in META-INF/services).
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[jira] Commented: (MDEP-245) goal to check classpath for duplicate
resources/classes
Posted by "luke w patterson (JIRA)" <ji...@codehaus.org>.
[ http://jira.codehaus.org/browse/MDEP-245?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=214007#action_214007 ]
luke w patterson commented on MDEP-245:
---------------------------------------
One option for now is JBoss' Tattletale tool: http://www.jboss.org/tattletale
an example of its use: http://insuchaworld.blogspot.com/2010/03/using-jboss-tattletale-tool-in-maven.html
> goal to check classpath for duplicate resources/classes
> -------------------------------------------------------
>
> Key: MDEP-245
> URL: http://jira.codehaus.org/browse/MDEP-245
> Project: Maven 2.x Dependency Plugin
> Issue Type: New Feature
> Reporter: Joerg Schaible
> Assignee: Brian Fox
> Priority: Minor
>
> The classpath sometimes contains unintended duplicate resources and classes e.g.:
> # an artifact is present in two different versions at the same time, because it changed its groupId or artifactId, but no relocation POM has been provided by the artifact's author
> # an artifact has been split into several artifacts (avalon-famework => avalon-framework-api and avalon-framework-impl)
> # an artifact has a collection of "foreign" classes (CGLIB 2.x contains stuff from ASM 1.5)
> A new goal of the dependency plugin might detect such cases. Obviously there are cases, when this is expected (stax-api implements stuff provided also by JDK 6) or cannot be avoided in general (even xpp3_min contains two classes from xmlpull-api) or is even part of the spec (SPI files in META-INF/services).
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[jira] (MDEP-245) goal to check classpath for duplicate
resources/classes
Posted by "Robert Scholte (JIRA)" <ji...@codehaus.org>.
[ https://jira.codehaus.org/browse/MDEP-245?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Robert Scholte closed MDEP-245.
-------------------------------
Resolution: Won't Fix
Assignee: Robert Scholte (was: Brian Fox)
This is a typical example of an enforcer-rule, which has already been written.
[maven-enforcer-plugin|http://maven.apache.org/plugins/maven-enforcer-plugin/]
[banDuplicateClasses rule|http://mojo.codehaus.org/extra-enforcer-rules/banDuplicateClasses.html]
> goal to check classpath for duplicate resources/classes
> -------------------------------------------------------
>
> Key: MDEP-245
> URL: https://jira.codehaus.org/browse/MDEP-245
> Project: Maven 2.x Dependency Plugin
> Issue Type: New Feature
> Reporter: Joerg Schaible
> Assignee: Robert Scholte
> Priority: Minor
>
> The classpath sometimes contains unintended duplicate resources and classes e.g.:
> # an artifact is present in two different versions at the same time, because it changed its groupId or artifactId, but no relocation POM has been provided by the artifact's author
> # an artifact has been split into several artifacts (avalon-famework => avalon-framework-api and avalon-framework-impl)
> # an artifact has a collection of "foreign" classes (CGLIB 2.x contains stuff from ASM 1.5)
> A new goal of the dependency plugin might detect such cases. Obviously there are cases, when this is expected (stax-api implements stuff provided also by JDK 6) or cannot be avoided in general (even xpp3_min contains two classes from xmlpull-api) or is even part of the spec (SPI files in META-INF/services).
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