[
Date Prev][
Date Next][
Thread Prev][
Thread Next][
Date Index][
Thread Index]
[
List Home]
|
Re: [aspectj-users] Problem with static intertype declaration and interface
|
On the good news front, the AspectJ compiler in CVS HEAD (and for 1.2) now catches this error at compile time.
> ------------Original Message------------
> From: Bo Yi <boyi@xxxxxxxxxx>
> To: aspectj-users@xxxxxxxxxxx
> Cc: "'aspectj-users@xxxxxxxxxxx'" <aspectj-users@xxxxxxxxxxx>, aspectj-users-admin@xxxxxxxxxxx
> Date: Thu, Mar-25-2004 8:10 AM
> Subject: Re: [aspectj-users] Problem with static intertype declaration and interface
>
>
>
>
>
> Hello Wolvers,
>
> This is a Java error rather than Aspect error.
>
> AspectJ allows add intertype declaration but the declaration must be a
> valid java declaration in case it is added locally to the java class.
> In your sample you tried to add a PRIVATE method with IMPLEMENTATION into
> an interface. This is not valid in terms of Java. The java error message
> indicated private is not a valid modifier to an interface method.
>
> Best,
>
> Bo
> ----------------------------------------------------------
> Dr. Bo Yi
> WAS L3 Support
> IBM Toronto Lab
> A2-713/Q2Z/8200/MKM
> 8200 Warden Ave. Markham ONT. L6G 1C7
> Phone: 905-413-4819
> Tie Line: 969-4819
> E-Mail: boyi@xxxxxxxxxx
>
>
>
> |---------+------------------------------->
> | | "Wolvers, B. (Bas)" |
> | | <Bas.Wolvers@AkzoNob|
> | | el.com> |
> | | Sent by: |
> | | aspectj-users-admin@|
> | | eclipse.org |
> | | |
> | | |
> | | 03/24/2004 04:12 AM |
> | | Please respond to |
> | | aspectj-users |
> |---------+------------------------------->
> >-----------------------------------------------------------------------------------------------------------------------|
> | |
> | To: "'aspectj-users@xxxxxxxxxxx'" <aspectj-users@xxxxxxxxxxx> |
> | cc: |
> | Subject: [aspectj-users] Problem with static intertype declaration and interface |
> | |
> | |
> >-----------------------------------------------------------------------------------------------------------------------|
>
>
>
> Please have a look at the following code:
>
> package untitled4;
> public interface Interface1{}
>
> package untitled4;
> class Untitled1
> {
> public static void main(String args[])
> {
> }
> }
>
> package untitled4;
> aspect aAspect
> {
> declare parents : Untitled1 implements Interface1;
>
> private static String Untitled1.aString = getString();
>
> private static final String Interface1.getString()
> {
> return "AString";
> }
> }
>
> When I run this code the following exception occurs:
> java.lang.ClassFormatError: untitled4/Interface1 (Illegal method modifiers:
> 0x409)
> at java.lang.ClassLoader.defineClass0(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
> at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
> at
> java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
> at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
> at
> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
> at java.lang.ClassLoader.defineClass0(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
> at
> java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
> at
> java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
> at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
> at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
> at
> sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
> at
> java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
> Exception in thread "main"
>
> Questions:
> - Why does the error occur? (The ajc compiler doesn't give an error or
> warning) Is this a aspectJ bug?
>
> - Why is it not possible to intertype a static field to an interface.
> (I want to add a static field to more then one class, the classes
> implements
> the same interface)
>
> Greetings,
>
> Bas
> _______________________________________________
> aspectj-users mailing list
> aspectj-users@xxxxxxxxxxx
> http://dev.eclipse.org/mailman/listinfo/aspectj-users
>
>
> _______________________________________________
> aspectj-users mailing list
> aspectj-users@xxxxxxxxxxx
> http://dev.eclipse.org/mailman/listinfo/aspectj-users
>
>
