[MNG-732] Improve plugin configuration property merge algorithm

• Type: Improvement
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.0-alpha-3
• Fix Version/s: 2.0-beta-1
• Component/s: Plugins and Lifecycle
• Assignee: John Dennis Casey
• Reporter: Vincent Massol
• Created: 13/Aug/05 18:03
• Updated: 16/Dec/08 09:43
• Resolved: 25/Aug/05 19:22

Description

If the property are the same in the parent and the child project, then the parent property is not inherited. This is fine for simple properties but breaks for complex properties such as lists. Here's an example:

My parent POM:

<build>
<pluginManagement>
<plugins>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<systemProperties>

<property>
<name>cargo.resin3x.port</name>
<value>8280</value>
</property>
<property>
<name>cargo.resin3x.url</name>
<value>http://www.caucho.com/download/resin-3.0.9.zip</value>
</property>

</systemProperties>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>

My child POM:

<build>
<plugins>
<plugin>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<systemProperties>

<!-- Default list of containers to run on. If you want to shorten or change the
execution of 'samples', simply specify a shorter list of containers on the
command line or in your settings -->
<property>
<name>cargo.containers</name>
<value>resin3x, orion2x, tomcat5x, jetty4xEmbedded</value>
</property>

<!-- Location where to download and install the containers for the tests -->
<property>
<name>cargo.install.dir</name>
<value>${basedir}/../../target/installs</value>
</property>

</systemProperties>
</configuration>
</plugin>
</plugins>
</build>

It sounds a reasonable expectations that the system properties will get merged.

Issue Links

• relates to: MNG-2591 Plugins are merged incorrectly