Scala Maven Plugin Config

maven3-scala-plugin.txt

Inside your parent pom.xml:

	<build>
		<pluginManagement>
			<plugins>
					<plugin>
				    	<groupId>org.apache.maven.plugins</groupId>
					    <artifactId>maven-compiler-plugin</artifactId>
					    <version>2.3.2</version>
				  </plugin>
				  <plugin>
					    <groupId>net.alchim31.maven</groupId>
					    <artifactId>scala-maven-plugin</artifactId>
					    <version>3.1.5</version>
				  </plugin>
			</plugins>
		  </pluginManagement>
	</build>
	
	
	You can hava mixed java and scala on the same project as long as you have the folders: src/mai/scala, src/main/java, src/main/resources, src/test/scala, src/test/java/, src/test, resources. So in your pom.xml you do:
	
	<build>
		<plugins>
			<plugin>
				<groupId>net.alchim31.maven</groupId>
				<artifactId>scala-maven-plugin</artifactId>
				<executions>
					<execution>
						<id>scala-compile-first</id>
						<phase>process-resources</phase>
						<goals>
							<goal>add-source</goal>
							<goal>compile</goal>
						</goals>
					</execution>
					<execution>
						<id>scala-test-compile</id>
						<phase>process-test-resources</phase>
						<goals>
							<goal>testCompile</goal>
						</goals>
					</execution>
				</executions>
			</plugin>
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<executions>
					<execution>
						<phase>compile</phase>
						<goals>
							<goal>compile</goal>
						</goals>
					</execution>
				</executions>
			</plugin>
		</plugins>
	</build>
	
**To run parallel builds with maven 3 you use -T, so you can do $ mvn -T 1.5C clean install, I realize a redution of 3minutes more or less using this on total build time. 	
	
	

Any specific reason why you fixed the maven-compiler-plugin version?

no, here is just a sample, in real life i use profile variables :-)