Error in interoperation with Java

[Evgeniy Martin]

Hi,

For example, I create ceylon project "testCeylon" and 1 module "testJava" which contains 2 java class:

package testJava;

public class B {

}

package testJava;


public class TestClass {
   
    public TestClass(){
       
    }
   
    public void doTest(B[] a){
       
    }
   
    public  void doTest(B[][] a){
       
    }
   
}

In source file "run.ceylon":

import java.lang {
    ObjectArray
}

"Run the module `testJava`."
shared void run() {
    value b = ObjectArray<B>(1,B());
   
    TestClass testClass = TestClass();
    testClass.doTest(b);
}

and I get an error:

Argument must be assignable to parameter bArray of doTest in TestClass: ObjectArray<B> is not assignable to ObjectArray<ObjectArray<B>>?

In my real app I use GRBCallback.getSolution()

http://www.gurobi.com/documentation/6.5/refman/java_grbcallback_getsoluti.html

How I can call "public void doTest(B[] a)" ?

[Gavin King]

Interesting. What's going on here is that as far as the Ceylon typechecker is concerned, ObjectArray is just a regular generic type, and type arguments of generic types can't be used to resolve overloaded methods.

However, as far as *Java* is concerned, arrays are "special", and methods *can* be overloaded by an array element type.

If you open an issue, I can fix this by making the Ceylon typechecker handle java.lang.ObjectArray as a special case.

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[Stephane Epardaud]

Is this with 1.2.2 or the latest master?

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Stéphane Épardaud

[Evgeniy Martin]

 
we use Ceylon 1.2.2.
https://github.com/ceylon/ceylon-sdk/issues/609

[Gavin King]

It's fixed now, I believe:

    https://github.com/ceylon/ceylon/issues/6457

On Mon, Aug 29, 2016 at 3:42 PM, Evgeniy Martin <mart...@gmail.com> wrote:

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[Evgeniy Martin]

Awsome! Thanks.