Jonathan Lalou's blog

Case

Your project includes both Java classes and Groovy scripts. You would like to build all of them at the same time with Maven: this must be possible, because, after all, Groovy scripts are run on a Java Virtual Machine.

Solution

In your pom.xml, configure the maven-compiler-plugin as follows:

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.0</version>
                <configuration>
                    <compilerId>groovy-eclipse-compiler</compilerId>
                    <source>1.6</source>
                    <target>1.6</target>
                </configuration>
                <dependencies>
                    <dependency>
                        <groupId>org.codehaus.groovy</groupId>
                        <artifactId>groovy-eclipse-compiler</artifactId>
                        <version>2.8.0-01</version>
                    </dependency>
                    <dependency>
                        <groupId>org.codehaus.groovy</groupId>
                        <artifactId>groovy-eclipse-batch</artifactId>
                        <version>2.1.5-03</version>
                    </dependency>
                </dependencies>
            </plugin>

With such setup, default compiler (which cannot compile Groovy scripts parallelly of Java sources) will be replaced with Eclipse’s one (which can).