Below is the response that Mo sent me when I could not access fields that
were inherited from a base class. This will let you read/write fields from
a Base Class.
==========================================
This sounds like a documentation problem. The HTML docs do indicate
that this is possible but there is no example of how to do it.
You should be able to get or set a shadowed value like this:
java::field $obj {FIELD BASECLASS}
java::field $obj {FIELD BASECLASS} NEWVALUE
I will have to add a short example to the docs about this problem.
Mo Dejong
Red Hat Inc.
On Tue, 1 Feb 2000, Trella Christopher-P28453 wrote:
> If I have a class that inherits from a base class, I cannot use the
> java::field command to get access to fields that are inherited from the
base
> class. Why can't I look at fields that are inherited from the base class.
>
> Chris Trella
> 480-675-1347
> [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
> -----Original Message-----
> From: Mo DeJong [mailto:[EMAIL PROTECTED]]
> Sent: Friday, June 23, 2000 1:19 PM
> To: Frank Krahmer
> Cc: [EMAIL PROTECTED]
> Subject: [Tcl Java] Re: [Tcl Java] Access to public baseclass data
> members via Jacl
>
>
> On Fri, 23 Jun 2000, Frank Krahmer wrote:
>
> > Dear Sir,
> >
> > how can I access a public baseclass attribute in a Java
> class via Jacl,
> > when an object of derived class is instanciated ?
> >
> > Java-class example :
> > --------------------
> > public class baseClass
> > { public String dummyAttribute;
> > }
> > public class derivedClass extends baseClass
> > { // anything
> > }
> >
> > Jacl-access example :
> > ---------------------
> > set theDerivedObj [java::new derivedClass]
> > java::field $theDerivedObj dummyAttribute "blabla" //
> RUNTIME ERROR
> > // brings error tcl.lang.TclException: field "name" doesn't exist
> >
> > set theBaseObj [java::new baseClass]
> > java::field $theBaseObj dummyAttribute "blabla" // OK
> >
> > When the object is of class baseClass, the attribute is accessible.
> > When the object is of class derivedClass, the attribute is
> not accessible.
>
>
> You have found a bug in Tcl/Java. One should be able to access
> fields from inherited classes by default. I am going to check
> your test case into the CVS and then start look into how to solve
> the problem. If you are interested in writing up a patch to fix
> this problem, it will get fixed a lot sooner :)
>
> The source files of interest are:
>
> src/tcljava/tcl/lang/JavaFieldCmd.java
> src/tcljava/tcl/lang/JavaInvoke.java (getField and setField methods)
>
> Mo DeJong
> Red Hat Inc
>
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