maven 3: Accessing version of “root” corporate POM

Question

Using Maven 3.0.4.

I am tasked with providing a corporate parent POM for our organization. My team will provide support for questions or issues developers have when

Answer 1

I stopped using maven-antrun-plugin and switched to GMaven instead. I can get the info required with a simple POM hierarchy traversal.

<plugin>
    <groupId>org.codehaus.gmaven</groupId>
    <artifactId>groovy-maven-plugin</artifactId>
    <version>2.0</version>
    <executions>
        <execution>
            <id>echo-build-environment</id>
            <phase>validate</phase>
            <goals>
                <goal>execute</goal>
            </goals>
            <configuration>
                <source>
                <![CDATA[
                def rootPom = project;
                while (rootPom.parent != null) {
                    rootPom = rootPom.parent;
                }

                project.properties.setProperty('root.pom.version', 
                                                rootPom.version);                            
                log.info("      Maven Home:  " + project.properties['maven.home']);
                log.info("       Java Home:  " + project.properties['java.home']);
                log.info("   Built By User:  " + project.properties['user.name']);
                log.info("Corp POM Version:  " + rootPom.version);
                ]]>
                </source>
            </configuration>
        </execution>
    </executions>
</plugin>

The project.properties.setProperty part stores the calculated property so it may be accessed by child POMs.

Resulting log looks like:

[INFO]       Maven Home:  c:\dev\maven\apache-maven-3.0.4
[INFO]        Java Home:  c:\Program Files\Java\jdk1.7.0_13\jre
[INFO]    Built By User:  user944849
[INFO] Corp POM Version:  0.26-SNAPSHOT

Answer 2

You can achieve property expansion in installed/deployed POM by using a combination of two plugins: - maven-resources-plugin to generate a filtered version of your pom.xml - maven-install-plugin and maven-deploy-plugin, using the install-file and deploy-file mojos, to install/deploy the filtered POM.

This process could for instance be triggered during the releaser process