Mixins - Property Handling / Precendence #11133
Description
Affected version
Maven 4.1.0+
Bug description
I'm trying to define a mixin which looks like this:
<project xmlns="http://maven.apache.org/POM/4.2.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.2.0 https://maven.apache.org/xsd/maven-4.2.0.xsd">
<parent>
<groupId>com.soebes.smpp</groupId>
<artifactId>smpp</artifactId>
<version>7.0.5</version>
<relativePath/>
</parent>
<groupId>com.soebes.mixins</groupId>
<artifactId>mixin-jdk-21</artifactId>
<version>1.0.0</version>
<packaging>pom</packaging>
<properties>
<maven.compiler.release>21</maven.compiler.release>
</properties>
</project>and having a project which uses the above mixin like this:
<project xmlns="http://maven.apache.org/POM/4.2.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.2.0 https://maven.apache.org/xsd/maven-4.2.0.xsd">
<parent>
<groupId>com.soebes.smpp</groupId>
<artifactId>smpp</artifactId>
<version>7.0.5</version>
<relativePath/>
</parent>
<groupId>com.soebes.examples.j2ee</groupId>
<artifactId>jee-parent</artifactId>
<version>3.1.4-SNAPSHOT</version>
<mixins>
<mixin>
<groupId>com.soebes.mixins</groupId>
<artifactId>mixin-jdk-21</artifactId>
<version>1.0.0</version>
</mixin>
</mixins>
</project>The mixin defines the maven.compiler.release but unfortunately the result is being compiled with a different <maven.compiler.release>11</maven.compiler.release> which is defined in the com.soebes.smpp:smpp:7.0.5 parent.
Either the property of the parent within the usage has precedence over the mixin defined property or the parent used in the mixin defininition project.
The question is:
- Is this intented behaviour ?
- Mixins which only define properties only is not intended/supported?
- The given examples in the documentation are defined without the usage of a parent.. That might be problematic to make a release of mixin because plugins etc. needed to be defined.