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[aspectj-users] Inter-type member in combination with a private interface - Possible bug
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This looks a lot bug-38824 which concerns inter-type declarations for an
abstract base class causing errors for each of its children.
Matthew Webster
AOSD Project
Java Technology Centre, MP146
IBM Hursley Park, Winchester, SO21 2JN, England
Telephone: +44 196 2816139 (external) 246139 (internal)
Email: Matthew Webster/UK/IBM @ IBMGB, matthew_webster@xxxxxxxxxx
http://w3.hursley.ibm.com/~websterm/
aspectj-users-request@xxxxxxxxxxx@eclipse.org on 11/10/2003 17:00:01
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Today's Topics:
1. Inter-type member in combination with a private interface - Possible
bug (=?ISO-8859-1?Q?S=E9rgio_Soares?=)
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Message: 1
Date: Fri, 10 Oct 2003 17:08:04 -0300
From: =?ISO-8859-1?Q?S=E9rgio_Soares?= <scbs@xxxxxxxxxxx>
Organization: CIn - UFPE
To: ajdt-dev@xxxxxxxxxxxxxxx, aspectj-users@xxxxxxxxxxx
Subject: [aspectj-users] Inter-type member in combination with a private
interface - Possible
bug
Reply-To: aspectj-users@xxxxxxxxxxx
Hi Everybody,
I was moving my environment from AspectJ 1.0.6 to 1.1 when I got an
error in a code that was OK before. Reading the programming guide I can
say that my code complies with AspectJ 1.1.
I created a simpler example to make the explanation easier. Consider
three classes X, Y and SubY. Note that class Y is an abstract class.
public class X {}
public abstract class Y {}
public class SubY extends Y {}
Now consider an aspect WhoAmI that defines an interface, Flag, with a
method whoami. The aspect changes classes X and Y to implement the
interface and add their implementation of the whoami method.
public aspect AspectWhoAmI {
private interface Flag {
public void whoami();
}
declare parents: X || Y implements Flag;
public void X.whoami() {
System.out.println("I am x");
}
public void Y.whoami() {
System.out.println("I am Y");
}
}
When compiling this example in eclipse 2.1.1 with AJDT 1.1.4 I got the
following error in class SubY "Class must implement the inherited method
WhoAmI.Flag.whoami()".
If I remove the abstract modifier from the class Y the code compiles
without errors. It seams to be a bug, doesn't it? The code complies
without erros if I remove the method signature from the Flag interface
keeping the abstract modifier in class Y. However, if I do this the
subtypes of Flag would not be forced to implement the whoami method at
compile time.
Best Regards,
Sergio
--
Sérgio Soares
Centro de Informática - UFPE
scbs@xxxxxxxxxxx
http://www.cin.ufpe.br/~scbs
Software Productivity Group
http://www.cin.ufpe.br/spg
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