`update-property` does not update the property defined in the parent POM

[marko-bekhta]

Hey all,

We have a use-case for update-property when the property is defined in the parent pom and the corresponding dependency is managed in the module.

As an example, assume having a multimodule maven project:

<?xml version="1.0" encoding="UTF-8"?>
<!--ROOT POM:-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.acme</groupId>
    <artifactId>my-artifact-parent</artifactId>
    <version>1.0</version>
    <packaging>pom</packaging>
    <modules>
        <module>module1</module>
    </modules>

    <properties>
        <version.some.lib>1.0.0.Final</version.some.lib>
    </properties>
</project>

<?xml version="1.0" encoding="UTF-8"?>
<!--Module POM:-->
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>com.acme</groupId>
        <artifactId>my-artifact-parent</artifactId>
        <version>1.0</version>
        <relativePath>../pom.xml</relativePath>
    </parent>

    <artifactId>module1</artifactId>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>some</groupId>
                <artifactId>lib</artifactId>
                <version>${version.some.lib}</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

</project>

and let's assume there's a 2.0.0.Final version of this lib. Running

mvn versions:update-property -Dproperty=version.some.lib

has no effect on such POMs, since the property lives in a parent and the plugin only considers a current pom file for editing: https://github.com/mojohaus/versions/blob/6cd759ce2b1e884ebbbf3dece70b156d1b102753/versions-maven-plugin/src/main/java/org/codehaus/mojo/versions/AbstractVersionsUpdaterMojo.java#L476

Would it be possible to support such a case and update the property in the parent pom?

[jarmoniuk]

Similar to #837, but in this case the mojo is applied on the reactor.