General talk about software patterns

["Sriram Gopalan" <Sriram.Gopalan AT agile.com>]

I have been working with J2EE based systems for 5+ years now and the most 
commonly used patterns are 
 
(a) singleton - because everyone wants to use a pattern and this is easiest 
to implement (or so they think)
 
(b) facade - the session facade EJB Design Pattern (sic) made this very 
popular. It also helps that one doesn't need to do anything to implement this
pattern. Apparently, all you need to do is to suffix the class name with 
"Facade"
 
Template Method (as it is actually explained in GoF) is not to be found all 
that commonly. Most of the times, people don't take the effort required to
identify which part of the logic belongs in the base class and which parts 
are hot spots. I have seen entire methods copy-pasted into subclasses to
modify a couple of lines.
 
regards,
Sriram Gopalan

________________________________

From: 
patterns-discussion-bounces AT cs.uiuc.edu
 on behalf of Richard P. Gabriel
Sent: Wed 7/6/2005 1:12 PM
To: Jan Hannemann; 
patterns-discussion AT cs.uiuc.edu
Subject: RE: [patterns-discussion] Which patterns are more frequently used?



There will be a related paper at OOPSLA this year:

http://www.oopsla.org/2005/ShowEvent.do?id=29

which will talk about automatically finding things a little more
primitive than patterns and drawing some conclusions from that. The
methodology *might* be applicable at least in part to answering the
overall question posed of the distribution of pattern usage in real
systems.

(The authors of the paper are not patterns fans, but the paper was
shepherded (by Kent Beck) to eliminate problems related to that.)

                        -rpg-

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