[ 
https://jira.codehaus.org/browse/MNG-5145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Robert Scholte updated MNG-5145:
--------------------------------

    Description: 
Optional compile-time dependencies are being resolved (in WAR projects, at 
least) into the packaged artifact.

There has been a regression since Maven 2.2.1 in regards to resolving optional 
dependencies.

In the attached pom (which builds a WAR), there are two dependencies:
* org.springframework:spring-core:2.5.6 - at compile scope
* org.dbunit:dbunit:2.3.0 - at test scope.


The dependency tree looks like this:

{noformat}
net.twasink:webapp:war:1.0
+- org.springframework:spring-core:jar:2.5.6:compile
|  \- commons-logging:commons-logging:jar:1.1.1:compile
\- org.dbunit:dbunit:jar:2.3.0:test
   +- junit:junit:jar:3.8.2:test
   +- junit-addons:junit-addons:jar:1.4:test
   |  +- xerces:xercesImpl:jar:2.6.2:test
   |  \- xerces:xmlParserAPIs:jar:2.6.2:test
   +- org.apache.poi:poi:jar:3.1-FINAL:test
   |  \- log4j:log4j:jar:1.2.13:test
   +- commons-collections:commons-collections:jar:3.1:test
   +- commons-lang:commons-lang:jar:2.1:test
   +- org.slf4j:slf4j-api:jar:1.4.3:test
   \- org.slf4j:slf4j-nop:jar:1.4.3:test
{noformat}

Note that {{log4j:log4j:1.2.13}} is a {{test}} dependency. However, when you do 
{{'mvn package'}}, and inspect the resulting WAR file, it includes {{log4j}}!

The problem appears to be that {{commons-logging}} (a compile dependency 
brought in by {{spring-core}}) declares {{log4j}} as an _optional_ {{compile}} 
dependency. This is clashing with the test dependency brought in transitively 
by {{dbunit}}.

To make it worse, this is still brought in if you add an explicit exclusion of 
{{log4j}} to {{spring-core}}.

Maven 2.2.1 did not bring in the {{log4j}} JAR - this is a regression under 
Maven 3.0.3

  was:
Optional compile-time dependencies are being resolved (in WAR projects, at 
least) into the packaged artifact.

There has been a regression since Maven 2.2.1 in regards to resolving optional 
dependencies.

In the attached pom (which builds a WAR), there are two dependencies:
* org.springframework:spring-core:2.5.6 - at compile scope
* org.dbunit:dbunit:2.3.0 - at test scope.


The dependency tree looks like this:


net.twasink:webapp:war:1.0
+- org.springframework:spring-core:jar:2.5.6:compile
|  \- commons-logging:commons-logging:jar:1.1.1:compile
\- org.dbunit:dbunit:jar:2.3.0:test
   +- junit:junit:jar:3.8.2:test
   +- junit-addons:junit-addons:jar:1.4:test
   |  +- xerces:xercesImpl:jar:2.6.2:test
   |  \- xerces:xmlParserAPIs:jar:2.6.2:test
   +- org.apache.poi:poi:jar:3.1-FINAL:test
   |  \- log4j:log4j:jar:1.2.13:test
   +- commons-collections:commons-collections:jar:3.1:test
   +- commons-lang:commons-lang:jar:2.1:test
   +- org.slf4j:slf4j-api:jar:1.4.3:test
   \- org.slf4j:slf4j-nop:jar:1.4.3:test

Note that log4j:log4j:1.2.13 is a test dependency. However, when you do 'mvn 
package', and inspect the resulting WAR file, it includes log4j!

The problem appears to be that commons-logging (a compile dependency brought in 
by spring-core) declares log4j as an _optional_ compile dependency. This is 
clashing with the test dependency brought in transitively by dbunit.

To make it worse, this is still brought in if you add an explicit exclusion of 
log4j to spring-core.

Maven 2.2.1 did not bring in the log4j JAR - this is a regression under Maven 
3.0.3

    
> Optional compile dependencies being resolved by test dependencies
> -----------------------------------------------------------------
>
>                 Key: MNG-5145
>                 URL: https://jira.codehaus.org/browse/MNG-5145
>             Project: Maven 2 & 3
>          Issue Type: Bug
>          Components: Dependencies
>    Affects Versions: 3.0.3
>            Reporter: Robert Watkins
>            Priority: Critical
>         Attachments: pom.xml
>
>
> Optional compile-time dependencies are being resolved (in WAR projects, at 
> least) into the packaged artifact.
> There has been a regression since Maven 2.2.1 in regards to resolving 
> optional dependencies.
> In the attached pom (which builds a WAR), there are two dependencies:
> * org.springframework:spring-core:2.5.6 - at compile scope
> * org.dbunit:dbunit:2.3.0 - at test scope.
> The dependency tree looks like this:
> {noformat}
> net.twasink:webapp:war:1.0
> +- org.springframework:spring-core:jar:2.5.6:compile
> |  \- commons-logging:commons-logging:jar:1.1.1:compile
> \- org.dbunit:dbunit:jar:2.3.0:test
>    +- junit:junit:jar:3.8.2:test
>    +- junit-addons:junit-addons:jar:1.4:test
>    |  +- xerces:xercesImpl:jar:2.6.2:test
>    |  \- xerces:xmlParserAPIs:jar:2.6.2:test
>    +- org.apache.poi:poi:jar:3.1-FINAL:test
>    |  \- log4j:log4j:jar:1.2.13:test
>    +- commons-collections:commons-collections:jar:3.1:test
>    +- commons-lang:commons-lang:jar:2.1:test
>    +- org.slf4j:slf4j-api:jar:1.4.3:test
>    \- org.slf4j:slf4j-nop:jar:1.4.3:test
> {noformat}
> Note that {{log4j:log4j:1.2.13}} is a {{test}} dependency. However, when you 
> do {{'mvn package'}}, and inspect the resulting WAR file, it includes 
> {{log4j}}!
> The problem appears to be that {{commons-logging}} (a compile dependency 
> brought in by {{spring-core}}) declares {{log4j}} as an _optional_ 
> {{compile}} dependency. This is clashing with the test dependency brought in 
> transitively by {{dbunit}}.
> To make it worse, this is still brought in if you add an explicit exclusion 
> of {{log4j}} to {{spring-core}}.
> Maven 2.2.1 did not bring in the {{log4j}} JAR - this is a regression under 
> Maven 3.0.3

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