CSC/ECE 517 Fall 2010/ch7 7b vk

Information Expert Pattern

Information Expert Pattern is one of the GRASP patterns or principles used as a mental aid to assign responsibilities to the software classes in the process of object oriented design.

General Responsibility Assignment Software Patterns(or Principles) , popularly known as GRASP, are a set of guidelines for assigning responsibility to software classes and objects in object oriented design.

Object oriented design is a process of building a system of interacting objects to solve a given software problem.It can be otherwise defined as,identifying requirements and creating a domain model, then adding methods to the software classes, and defining the messaging between the objects to fulfill the requirements.

But, deciding what methods belongs where, and how the objects should interact, is critically important in the designing process and is something non-trivial.