AspectJ and CDI

Question

I\'m trying to figure out a way to inject a bean into an aspect.

I mean

public class Greeter {
    public String greet(String name) {....}
}

...

pu         


        

Answer 1

Thanks to the help of the community, I managed to come out with a solution for both the problems. Leaving track here.

PART ONE - aspectjrt.jar in deployment

First, added Shrinkwrap to my dependencies:

    org.jboss.shrinkwrap.resolver
    shrinkwrap-resolver-api-maven
    test


    org.jboss.shrinkwrap.resolver
    shrinkwrap-resolver-impl-maven
          test


       org.jboss.shrinkwrap.resolver
       shrinkwrap-resolver-impl-maven-archive
      test

is not needed: Arquillian's BOM - already included - will take care of that.

Then add aspectj to deployment classpath:

@RunWith(Arquillian.class)
public class ArquillianTest {
    private static final String[] DEPENDENCIES = {
        "org.aspectj:aspectjrt:1.8.7"
    };

    @Deployment
    public static JavaArchive createEnvironement() {
        JavaArchive lib = ShrinkWrap.create(JavaArchive.class, "libs.jar");
        for (String dependency : DEPENDENCIES) {
            lib.merge(Maven.resolver().resolve(dependency).withTransitivity().asSingle(JavaArchive.class));
        }

        JavaArchive jar = ShrinkWrap.create(JavaArchive.class)
            // create you deployment here
            .as(JavaArchive.class);

        JavaArchive toBeDeployed = jar.merge(lib);

        return toBeDeployed;
    }

    // other stuff, like tests

}

PART TWO: Injecting a bean into an aspect

After further inquiries I think simas_ch was correct in saying that CDI does not inject beans into aspects.

Came out with a workaround: adding an @Injected member into a bean via the aspect.

public interface Advised {
    String buildGreeting(String name);
}

public class AdvisedImpl implements Advised {
    String buildGreeting(String name) {
        return "ADVISED";
    }
}

public class Greeter {
    public String greet(String name) {
        return "Hello, " + name + ".";
    }
}

...

public aspect GreeterAspect {
    @Inject
    private Greeter Advised.greeter; // adding the member to the interface / class. No need for getters / setters

    private pointcut pc() : execution(* x.y.z.Advised.buildGreeting(String));

    String around(Advised adv, String name) : pc() && target(adv) && args(name) {
        log.debug("Aspect is about to say something...");
        String result = proceed(adv, name) + " - " + adv.greeter.greet(name);
        log.debug("Aspect said: '" + result + "'");
        return result;
    }
}

Given the test

@Test
public void test() {
    assertThat(advised, not(is(nullValue())));
    assertThat(advised.buildGreeting("Stefano"), equalToIgnoringCase("advised - hello, stefano."));
}

it succeeds.