| Re: Business Process Management and Rules [message #759 is a reply to message #758] |
Tue, 10 April 2007 05:55   |
AJM
Messages: 2352
Registered: April 2006
Location: Surrey, UK
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Senior Member |
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Such rules cannot easily be handled by the framework for the simple reason that the framework knows only about Tasks and Roles, and nothing about the state of any records within your application database.
If you have such complex rules, what is the difference between having to define them using PHP code and defining them in a rules engine? They still have to be defined, and doing it in code avoids the overhead of going through an intermediate rules engine.
If you look inside file dict_column.class.inc you will see where I turn access to different fields either ON or OFF depending on the datatype of the current column. This is just a single task with a single screen, yet the screen can change at will to suit the circumstances. I am afraid that trying to write a rules engine to do the same thing would require an enormous amount of effort, but for what benefit?
Also, the task of maintaining a rules engine which people would expect to be able to handle ANY condition in ANY set of circumstances would be just too great.
If you think that such a rules engine is possible then why not try writing it yourself?
Tony Marston
http://www.tonymarston.net
http://www.radicore.org
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