Tag: architecture

Provides a way to access the elements of an aggregate object sequentially without exposing its underlying representation.

Defines an interface for creating an object, but let the subclasses decide which class to instantiate.It let the instantiation differ to subclasses.

Define the skelton of an algorithm in an operation, deferring some steps to subclasses. It lets subclasses redefine certain steps of an algorithm without changing the algorithm structure.

Julia Fractals Inc. is building a J2EE based application for Order Entry and management of their fractal software. Once the order is taken, it is submitted to a relational database. A provisioning system then queries data and makes appropriate calls to various subsystems using JMS on MQ Series. What design pattern is JMS an example of here?

centralizes control, retrieval, and invocation of view and command processing

reduces coupling between remote tiers and provides an entry point for accessing remote services in the business tier

enables loose coupling between the business and resource tiers and encapsulates all the data access logic to create, retrieve, delete, and update data from a persistent store

enables asynchronous processing in your enterprise applications using JMS

Simpliflies the client access to the business tier components and eliminates client's direct dependency on multiple business objects

provides a powerful mechanism to implement transparent persistence for your object model