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Changing the version of an Aggregator

Let us assume we have a multi-module project which consists of the following modules:

<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>localdomain.localhost</groupId>
  <artifactId>parent</artifactId>
  <packaging>pom</packaging>
  <version>1.2.0</version>
  <name>Parent</name>

  <description>
    separate-module does not use this project as parent. (aggregator)
  </description>

  <modules>
    <module>separate-module</module>
    <module>module-a2</module>
    <module>module-a3</module>
  </modules>
..
</project>

A module separate-module:

<?xml version="1.0" encoding="UTF-8"?>
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.soebes.smpp</groupId>
    <artifactId>smpp</artifactId>
    <version>2.3.0</version>
    <relativePath/>
  </parent>

  <groupId>com.soebes.separate</groupId>
  <artifactId>separate-module</artifactId>
  <packaging>pom</packaging>
  <version>2.0.7-SNAPSHOT</version>

</project>

And two other modules first module-a2 which looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>localdomain.localhost</groupId>
    <artifactId>parent</artifactId>
    <version>1.2.0</version>
  </parent>

  <groupId>localdomain.localhost</groupId>
  <artifactId>module-a2</artifactId>
  <packaging>pom</packaging>
  <version>1.2.0</version>

</project>

An finally the module module-a3 which looks like this:

<?xml version="1.0" encoding="UTF-8"?>
<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/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>localdomain.localhost</groupId>
    <artifactId>parent</artifactId>
    <version>1.2.0</version>
  </parent>

  <groupId>localdomain.localhost</groupId>
  <artifactId>module-a3</artifactId>
  <packaging>pom</packaging>

</project>

So now you decide to change the version of the module to a different version like 3.6.0.

mvn versions:set -DnewVersion=3.6.0

So the following output will be generated:

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] separate-module
[INFO] Parent
[INFO] module-a2
[INFO] module-a3
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Parent 1.2.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- versions-maven-plugin:2.4:set (default-cli) @ parent ---
[INFO] Searching for local aggregator root...
[INFO] Local aggregation root: /../project
[INFO] Processing change of localdomain.localhost:parent:1.2.0 -> 3.6.0
[INFO] Processing localdomain.localhost:parent
[INFO]     Updating project localdomain.localhost:parent
[INFO]         from version 1.2.0 to 3.6.0
[INFO]
[INFO] Processing localdomain.localhost:module-a2
[INFO]     Updating parent localdomain.localhost:parent
[INFO]         from version 1.2.0 to 3.6.0
[INFO]     Updating project localdomain.localhost:module-a2
[INFO]         from version 1.2.0 to 3.6.0
[INFO]
[INFO] Processing localdomain.localhost:module-a3
[INFO]     Updating parent localdomain.localhost:parent
[INFO]         from version 1.2.0 to 3.6.0
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] separate-module .................................... SKIPPED
[INFO] Parent ............................................. SUCCESS [  1.081 s]
[INFO] module-a2 .......................................... SKIPPED
[INFO] module-a3 .......................................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.973 s
[INFO] Finished at: 2017-06-17T14:17:50+02:00
[INFO] Final Memory: 23M/369M
[INFO] ------------------------------------------------------

If you have carefully read the output you have seen that the module separate-module is not listed here with something like Processing ....

This means that this module has not been changed to get a new version as you wished by the call.

To get that working you need to add supplemental command line parameters:

mvn versions:set -DnewVersion=3.6.0 -DoldVersion=* -DgroupId=* -DartifactId=*

This is needed otherwise the filter for the versions (via -DoldVersion=*) would have filtered out that module cause it has a different version than the rest of modules. Furthermore you need to add the -DgroupId=* and -DartifactId=* otherwise the separate-module will also filtered out based on the differences in groupId and artifactId.

So in end the result of the above call looks like this:

[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] separate-module
[INFO] Parent
[INFO] module-a2
[INFO] module-a3
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building Parent 1.2.0
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- versions-maven-plugin:2.4:set (default-cli) @ parent ---
[INFO] Searching for local aggregator root...
[INFO] Local aggregation root: /Users/kama/ws-git-so/versions-maven-plugin-issue
[INFO] Processing change of *:*:* -> 3.6.0
[INFO] Processing com.soebes.separate:separate-module
[INFO]     Updating project com.soebes.separate:separate-module
[INFO]         from version  to 3.6.0
[INFO]
[INFO] Processing localdomain.localhost:parent
[INFO]     Updating project localdomain.localhost:parent
[INFO]         from version  to 3.6.0
[INFO]
[INFO] Processing localdomain.localhost:module-a2
[INFO]     Updating parent localdomain.localhost:parent
[INFO]         from version  to 3.6.0
[INFO]     Updating project localdomain.localhost:module-a2
[INFO]         from version 1.2.0 to 3.6.0
[INFO]
[INFO] Processing localdomain.localhost:module-a3
[INFO]     Updating parent localdomain.localhost:parent
[INFO]         from version  to 3.6.0
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] separate-module .................................... SKIPPED
[INFO] Parent ............................................. SUCCESS [  1.080 s]
[INFO] module-a2 .......................................... SKIPPED
[INFO] module-a3 .......................................... SKIPPED
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.473 s
[INFO] Finished at: 2017-06-17T16:17:51+02:00
[INFO] Final Memory: 23M/310M
[INFO] ------------------------------------------------------------------------