[jira] Created: (MENFORCER-119) new rule to check for invalid dependency excludes

["Travis (JIRA)" <ji...@codehaus.org>]

new rule to check for invalid dependency excludes
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                 Key: MENFORCER-119
                 URL: https://jira.codehaus.org/browse/MENFORCER-119
             Project: Maven 2.x Enforcer Plugin
          Issue Type: Improvement
          Components: Standard Rules
    Affects Versions: 1.0.1
            Reporter: Travis


Say you depend on the foo jar and would like to exclude the servlet-api. For example:

<dependency>
<groupId>com.foo</groupId>
<artifactId>foo</artifactId>
<version>1</version>
<exclusions>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
</exclusions>
</dependency>

Later the foo jar switches to using the geronimo version of the servlet spec. You upgrade to use the new foo jar and your exclusion of the javax.servlet:servlet-api is no longer valid. It would be nice if there was a enforcer rule to check for these invalid excludes.

This type of thing happens for various reasons like:

dependency switched to the "same" dependency but with a different groupId - technically these are different deps according to maven
dependency changed minimum java language version where some apis are now included in the java runtime
dependency switched to a new implementation of the same library
dependency no longer uses a dependency

Without this kind of rule it is very easy for an unwanted dependency slip in unnoticed.

Btw.  I also created a similar jira for the dependency plugin.  I'm not sure which plugin should should support this functionality.

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