AspectJ and Spring LTW doesn't work when upcasting

I setup LTW (load-time-weaving) with AspectJ and spring pretty quick and successfull. Here is the setup: beans.xml:

Code:

---

<aop:aspectj-autoproxy />
<context:spring-configured />
<context:load-time-weaver />
<context:component-scan base-package="com.test.service" />

---

My service that will be autowired to a class:

Code:

---

@Service
public class MyService {
}

---

Parent class:

Code:

---

public class Bar {
}

---

The configurable class, that autowires the service and extends Bar.

Code:

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@Configurable
public class BarExtended extends Bar{
    @Autowired
    private MyService service;
    public MyService getWeavedInObject(){
        return service;
    }
}

---

And just a class that has got a referance to the parent class Bar:

Code:

---

public class Foo {
    private Bar bar;
    public void setBar(Bar bar) {
        this.bar = bar;
    }
}

---

And a successfull test case. It just creates a instance of BarExtended and checks if the LTW worked. The Foo class does nothing. The working JVM parameter is: -javaagent:"${env_var:USERPROFILE}\.m2\repository\o rg\springframework\spring-instrument\3.1.0.RELEASE\spring-instrument-3.1.0.RELEASE.jar"

Code:

---

@Test
public void simple(){
    Foo foo = new Foo();
    BarExtended barExtended = new BarExtended();
    assertNotNull("LTW didn't work.", barExtended.getWeavedInObject());
}

---

This test runs green. BUT following test fails:

Code:

---

@Test
public void simple(){
    Foo foo = new Foo();
    BarExtended barExtended = new BarExtended();
    foo.setBar(barExtended);
    assertNotNull("LTW didn't work.", barExtended.getWeavedInObject());
}

---

I just insert the line where the class BarExtended is set to Foo. The upcast make the AspjectJ not working.

BTW, when I change the Foo class to use the BarExtended class (so no upcasting is needed):

Code:

---

public class Foo {
    private BarExtended bar;
    public void setBar(BarExtended bar) {
        this.bar = bar;
    }
}

---

The above test will work. Does anyone has an idea why AspjectJ behaves so strange, when a configurable object is upcasted?

Follwing fails as well:

Code:

---

@Test
public void simple() {
    Foo foo = new Foo();
    BarExtended barExtended = new BarExtended();
    Bar bar = (Bar) new BarExtended();
    foo.setBar(bar);
    assertNotNull("LTW didn't work.", barExtended.getWeavedInObject());
}

---

A different BarExtended object is set to Foo and the first barExtended object is ignored by AspectJ. BUT using reflection to instantiate BarExtended works:

Code:

---

@Test
public void simple() throws InstantiationException, IllegalAccessException{
    Foo foo = new Foo();
    Bar barExtended = (Bar) BarExtended.class.newInstance();
    foo.setBar(barExtended);
    assertNotNull("LTW didn't work.", ((BarExtended)barExtended).getWeavedInObject());
}

---

Strange, isn't it?

Regards,

Andreas