[aspectj-users] AspectJ 1.2rc1 and Java 1.5

[Andrew Clement <CLEMAS@xxxxxxxxxx>]

I saw the post below and thought we
should start discussing how best to use AspectJ and Java 1.5.

There are two things to point out:

1) Runtime.  Code produced by the
AspectJ 1.2 compiler runs on a 1.5 JVM (the only one I have available
for testing is the beta SUN 1.5 JVM)

2) Compile time.  The AspectJ 1.2
compiler is a Java 1.4 level compiler, it cannot be used to 
compile source code that exploits Java
1.5 language features.

The note below shows the kind of errors
produced if ajc is used to build code containing
Java 1.5 level features:

     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/xml/XMLElement.java:50:0
Type mismatch: cannot convert from AbstractStringBuilder to StringBuffer
     [iajc] [error  96]: error at sb.append('%');
     [iajc] ^^^^^^^^^^

In this case the source code is apparently
using  the capability in 1.5 of modifying a methods 
return type when overriding it an subclass.
 The way to work in this case is to use the 1.5 
compiler to build your source code into
class files and then use ajc to binary weave those class
files with your aspects.  I have
successfully tested this approach with some simple code that
used 1.5 features.

Andy.

Amir Michail <amichail@xxxxxxxxxxxxxxx>
Sent by: aspectj-users-admin@xxxxxxxxxxx

16/04/2004 08:49

Please respond to
aspectj-users

To	aspectj-users@xxxxxxxxxxx
cc
Subject	Re: [aspectj-users] AspectJ 1.2 release candidate 1 now available.

Hi,

Does this version work with Java 1.5?  In my experimentation, one
application 
worked while another, ArgoUML, does not compile.  (ArgoUML used to
compile 
with the previous version of AspectJ & Java 1.4.  Moreover, ArgoUML
compiles 
fine with javac 1.5.)

The problem appears to be this:

http://forum.java.sun.com/thread.jsp?thread=510771&forum=31&message=2426492

Maybe this needs to be fixed in the aspectj compiler?

I get errors like this:

compile:compile:
     [echo] Compiling the sources
     [echo] ../src_new
     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/application/modules/ModuleLoader.java:121
warning The method decode(String) from the type URLDecoder is deprecated
     [iajc] argoHome = java.net.URLDecoder.decode(argoHome);
     [iajc]            ^^^^^^^^^^^^^^^^^^^^^^^^^^
     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/cognitive/ToDoList.java:615
error The type AbstractStringBuilder is not visible
     [iajc] res.append(getClass().getName()).append(" {\n");
     [iajc] ^^^^^^^^^^^^^^^^^^^^^^^
     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/cognitive/ToDoList.java:619
error The type AbstractStringBuilder is not visible
     [iajc] res.append("    ").append(item.toString()).append("\n");

     [echo] Compiling the sources
     [echo] ../src_new
     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/application/modules/ModuleLoader.java:121
warning The method decode(String) from the type URLDecoder is deprecated
     [iajc] argoHome = java.net.URLDecoder.decode(argoHome);
     [iajc]            ^^^^^^^^^^^^^^^^^^^^^^^^^^
     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/cognitive/ToDoList.java:615
error The type AbstractStringBuilder is not visible
     [iajc] res.append(getClass().getName()).append(" {\n");
     [iajc] ^^^^^^^^^^^^^^^^^^^^^^^
     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/cognitive/ToDoList.java:619
error The type AbstractStringBuilder is not visible
     [iajc] res.append("    ").append(item.toString()).append("\n");


...


     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/xml/XMLElement.java:50:0
Type mismatch: cannot convert from AbstractStringBuilder to StringBuffer
     [iajc] [error  96]: error at sb.append('%');
     [iajc] ^^^^^^^^^^
     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/xml/todo/TodoParser.java:475:0
Unhandled exception type IOException
     [iajc] [error  97]: error at sb.append((char) Integer.parseInt(ent));
     [iajc] ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
     [iajc] 
/export/horn/2/amichail/argouml/src_new/org/argouml/xml/todo/TodoParser.java:478:0
Unhandled exception type IOException

BUILD FAILED
/export/horn/2/amichail/argouml/src_new/build.xml:563: 98 errors

Total time: 1 minute 4 seconds


Amir


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