In computer programming, the specification pattern is a particular software design pattern, whereby business rules can be recombined by chaining the business rules together using boolean logic.
A specification pattern outlines a business rule that is combinable with other business rules. In this pattern, a unit of business logic inherits its functionality from the abstract aggregate Composite Specification class. The Composite Specification class has one function called IsSatisfiedBy that returns a boolean value. After instantiation, the specification is "chained" with other specifications, making new specifications easily maintainable, yet highly customizable business logic. Furthermore upon instantiation the business logic may, through method invocation or inversion of control, have its state altered in order to become a delegate of other classes such as a persistence repository.
Read more about Specification Pattern: Example of Use
Famous quotes containing the word pattern:
“In almost every marriage there is a selfish and an unselfish partner. A pattern is set up and soon becomes inflexible, of one person always making the demands and one person always giving way.”
—Iris Murdoch (b. 1919)