Implementing Validation Rules using Aspects. Give Your Business Logic a Framework with Drools. By Paul Browne 08/03/2005 Most web and enterprise Java applications can be split into three parts: a front end to talk to the user, a service layer to talk to back-end systems such as databases, and business logic in between.
While it is now common practice to use frameworks for both front- and back-end requirements (e.g., Struts, Cocoon, Spring, Hibernate, JDO, and Entity Beans), there is no standard way of structuring business logic. Using Drools in Your Enterprise Java Application. By Paul Browne 08/24/2005 These days enterprise Java could almost put you to sleep.
How many hundreds of J2EE-EJB web applications have been written that capture information from a web page and store it in a database? What really keeps developers awake at night is trying to write and maintain the complex business logic in their applications.