I'm using JBOSS Drools. Ciao Mario
-----Original Message----- From: bansi [mailto:[EMAIL PROTECTED] Sent: 7 agosto 2008 02.58 To: [email protected] Subject: How to design a framework for implementing rules in JSF/Spring application We use JSF 1.2 (MyFaces 1.2.2) in the presentation layer, Spring 2.5.3 in the service layer and Hibernate3.2 as persistence layer. The java application we are building is mostly CRUD but involves tons of business rules which needs to be implemented at both presentation and service layers We are planning to design a business rule framework so that developers can work on individual business rules without stepping on each other and also to prevent redundant implementation of the same business rules . Here are the Goals Solution Goals: • Business rules are implemented in only one piece of code. i.e. Rule is packaged into a unit • Business rules have an consistent, identifiable form. • Rules have to be Abstract • View technology like JSF says I want to createManufacturer(Manufacturer manuf) passing Manufacturer object as parameter. Then the business rule framework should go and fetch the rules to do the job of createManufacturer () and then return the result. • Fetch the Rule based on Target object Is the concrete object on which you are performing the Rule for example Device object Operation Type Is C R U D Validate Proposed Solution: • To have catalog of business rules which will have name of the rulewith parameters and dependencies • To have Rule Context designed in such a way that it goes and fetches the Rule i.e. give me all the Rules from the RuleContext and the client will decide which Rule to Apply. We modeled the business rule framework as a variant of Strategy pattern. But this approach has limitation in the sense it requires Rules to be injected into the Service Layer Spring Beans . Then we looked at other design patterns like Command, Visitor but that doesn’t seems to fit the bill either. Any pointers/suggestions will be greatly appreciated -- View this message in context: http://www.nabble.com/How-to-design-a-framework-for-implementing-rules-in-JSF-Spring-application-tp18862336p18862336.html Sent from the MyFaces - Users mailing list archive at Nabble.com. This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the email by you is prohibited.
