Description Miguel Pessoa Monteiro 2003-11-07 11:45:55 EST

When an aspect introduces a constructor with arguments to a class that doesn't 
define any constructor and an instance is created using the introduced 
constructor initialization code outside constructors fails to execute.

Test case follows:

I used eclipse 3.0/AJDT 1.1.4.
The weave somehow messes with the initial assignment (= 17) to Server.field1, 
which is done outside any constructor.

Server.java:
-----------------------------------------------
public class Server {
   private int field1 = 17;
   public void showState() {
      System.out.println("field1 is " + field1);
   }
}

Concern.java:
-----------------------------------------------
public aspect Concern {
   private int Server.field2 = 19;
   public Server.new(int newval) {
      System.out.print("Additional intertype constructor. ");
      field2 = newval;
   }
}

Client.java:
-----------------------------------------------
public class Client {
   public static void main(String[] args) {
      Server obj1 = new Server();
      obj1.showState();
      Server obj2 = new Server(23);
      obj2.showState();
   }
}
-----------------------------------------------

With the aspect weaved in, the output I got was:
-----------------------------------------------
field1 is 17
Additional intertype constructor. field1 is 0
-----------------------------------------------

The implicit argumentless constructor was still in place, but when
Client.java makes a Server instance through the introduced constructor the
initialization of field1 did not execute.