Amazing...
We're starting to discuss stuff I've been experimenting with all year. My own Joda
project started initially as a way to generate beans from interfaces, adding in other
facilities like support for Maps and Lists, plus event handling.
If I had the chance then I would agree that the declaritive style of defining
properties is preferable.
public class Person {
property surname String;
property age int;
}
The trouble with this is that it requires source code pre generation. The only
alternative I've thought of is to write something like an Eclipse plugin that hides
the precompilation going on.
Doing something better with beans/properties seems to be a repetitive requirement. So
I'm fully supportive of looking at it.
Stephen
> from: James Strachan <[EMAIL PROTECTED]>
> date: Fri, 04 Oct 2002 07:17:40
> to: [EMAIL PROTECTED]
> subject: Re: [lang] Proposal for *NEXT* version
>
> This all sounds great stuff.
>
> It mirrors recent blog conversations on adding some other C# features,
> namely accessing class attributes (which are implemented as javadoc tags
> right now but could use JSR175 later on when we move to JDK1.5).
>
> There's links to the various posts on the matter here...
>
> http://www.brainopolis.com/roller/page/lance/20021003
>
> It'd be nice to unify this stuff into a small reusable library.
>
> James
> -------
> http://radio.weblogs.com/0112098/
> ----- Original Message -----
> From: "Berin Loritsch" <[EMAIL PROTECTED]>
> To: "Jakarta Commons Developers List" <[EMAIL PROTECTED]>
> Sent: Thursday, October 03, 2002 3:40 PM
> Subject: [lang] Proposal for *NEXT* version
>
>
> > The Avalon team has learned how the language features of C# can help us
> > write better and more intelligent software. However, since none of us
> > really has the money or inclination to completely tie ourselves to C#
> > or M$, we want to add language features in a Java way.
> >
> > We threw together a way to generate Delegates. A delegate is like a
> > method pointer, but it is also able to be treated like an Object. The
> > benefit of this is that we can pass in the delegate to a method, and
> > change the behavior of that method substantially.
> >
> > The perfect example where this pays off is with Intelligent Agent
> > design. The Intelligent Agent is the building block of artificial
> > intelligence. There are four or five basic algorithms for searching
> > through a problem space to find the best solution. These algorithms
> > require you to pass in functions. Delegates make all this possible,
> > without forcing the original class to have the same name. For example:
> >
> > interface NewComparator
> > {
> > int compare( Object orig, Object other );
> > }
> >
> > class ComparitorHeaven
> > {
> > public int compareClassName( Object orig, Object other )
> > { /* implementation */ }
> >
> > public int compareEquals( Object orig, Object other )
> > { /* implementation */ }
> > }
> >
> > With the two declarations above, I can write a search algorithm
> > like this:
> >
> > public Object findBestObject( String method )
> > {
> > ComparatorHeaven ch = new ComparatorHeaven;
> >
> > NewComparator checker =
> > (NewComparator) Delagate.newDelagate( ch, method );
> >
> > Iterator it = m_myList.iterator();
> > Object prev = it.next();
> >
> > while( it.hasNext() )
> > {
> > Object curr = it.next();
> > int preference = checker.compare( curr, prev );
> >
> > prev = curr;
> > // perform actual decisions based on preference
> > }
> > }
> >
> >
> > We have some initial stuff checked in to Excalibur Util.
> > When we are done shaping it up, we would like to give it
> > to Commons Lang. I realize you are getting ready to make
> > a release, which is why I don't want to push it for this
> > release. What are y'alls thoughts?
> >
> >
> > --
> >
> > "They that give up essential liberty to obtain a little temporary safety
> > deserve neither liberty nor safety."
> > - Benjamin Franklin
> >
> >
> > --
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> >
>
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