Comments on: Matcher – a design pattern candidate http://www.vlad-yatsenko.eu/2009/11/matcher-a-design-pattern-candidate/ Software Systems Design and Development in Detail Sat, 04 Feb 2012 07:41:00 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: admin http://www.vlad-yatsenko.eu/2009/11/matcher-a-design-pattern-candidate/comment-page-1/#comment-33 admin Fri, 19 Feb 2010 12:39:14 +0000 http://www.vlad-yatsenko.eu/?p=46#comment-33 To some extent it is similar to the Command pattern, but there are several substantial differences: * Matcher is stateless and is often singleton. * Matcher does not modify the target object - its purpose is to drive an algorithm execution. * Both Matcher and Command have more or less well-defined interfaces, which are different. I'd rather put it in a row with Strategy pattern which I, actually, consider as the simplest Interface pattern. To some extent it is similar to the Command pattern, but there are several substantial differences:
* Matcher is stateless and is often singleton.
* Matcher does not modify the target object – its purpose is to drive an algorithm execution.
* Both Matcher and Command have more or less well-defined interfaces, which are different.

I’d rather put it in a row with Strategy pattern which I, actually, consider as the simplest Interface pattern.

]]> By: Hitech http://www.vlad-yatsenko.eu/2009/11/matcher-a-design-pattern-candidate/comment-page-1/#comment-32 Hitech Sat, 13 Feb 2010 22:03:43 +0000 http://www.vlad-yatsenko.eu/?p=46#comment-32 This looks like a variation of the Command pattern that serves a different purpose though. This looks like a variation of the Command pattern that serves a different purpose though.

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