java mixed with clojure in maven and eclipse

Question

i created a sample polyglot program. i have a sensor and a robot implemented in java and AI implemented in clojure. and i can't connect maven properly

--src/main/java/clojuretest
                          |
                           DistanceSensor.java
                           AI.clj       (uses DistanceSensor)
                           Robot.java   (uses AI)

DistanceSensor.java:

package clojuretest;

public class DistanceSensor {

    public int getValue() {return 5;}
}

AI.clj:

(ns clojuretest.AI
  (:gen-class :methods [[isObstacleAhead [] boolean]]))

(defn -isObstacleAhead [this] (< (.getValue (clojuretest.DistanceSensor.)) 10))

Robot.java:

package clojuretest;

public class Robot {

    public boolean shouldStop() {
        return new AI().isObstacleAhead();
    }
}

i can even manually force maven to compile it: mvn clean clojure:compile produces error - no DistanceSensor class (but for some reason creates AI.class). so then mvn compile sees AI.class and compiles everything correctly and tests pass. but what can i do to make mvn clean compile pass? how should my pom.xml look like? also what can i do to make eclipse stop complaining about non existing AI.class?

Answer 1

You need to change layout of source code in your project. Clojure maven plugin requires, that clojure code went to separate directory, so you should have following layout:

 src/
    main/
      java/
        java-code
      clojure/
        clojure code
    test/
      java/
        java tests code
      clojure/
        clojure tests code

More details you can find in following article