Tag: architecture

Manages connection with data source to get and store data

Provide a unified interface to set of interfaces in a subsystem .Defines a higher level interface that makes the subsystem easier to use

Specify the kind of objects to create using a clone able instance and create new objects by copying this instance

Encapsulate request as object thereby letting you parameterize clients with different requests, queue or log requests and support undoable operations

Allow and object to change its state when it’s internal state changes. The object will appear to change its class.

Allow and object to change its state when it’s internal state changes. The object will appear to change its class.

Define a family of algorithms, encapsulate each one, and make them interchangeable. Lets the algorithm vary independently

Convert the interface of a class into another interface clients expect

Attach additional responsibilities to an object dynamically, provide a flexible alternative to sub classing for extended functionality

Separate the construction on a complex object from its representation so that the same construction process can create different representations