Skip to main content

Structural Patterns: Introduction


Structural Design Patterns
Structural patterns are concerned with how classes and objects are composed to form larger structures.
 The patterns included in this category have the characteristics as follows:


 Decorator 
 Add new functionality dynamically to existing objects, or remove it
 Proxy     
Control access to an object.Create expensive objects on demand
 Bridge   
Enable development of the interface and implementation of a component to proceed  independently
 Composite
Treat single objects and composite objects in the same way
 Flyweight
Reduce the cost of working with large numbers of very small objects
 Adapter
Match otherwise incompatible interfaces
 Façade

 Reorganize a system with many subsystems into identifiable layers with single entry points
Simplify the interface to a complex subsystem 

This article is just to give you a glimpse of types of Structural patterns .
All these pattern details  and their implementations will soon  be covered.

Till next time....

Happy Coding

Comments

Popular posts from this blog

Authentication using Social Networking portals(Facebook, Gmail, and Yahoo)

There are tons of sites, which offer sign on using the social networking site credentials (Facebook, gtalk, twitter and the list continues).It can be termed a “SINGLE SIGNON” and offers a lot of benefits compared to traditional database authentication approach. However, not storing user credentials in the DB imposes an additional risk. How to track who all logged into the system. Now the question is, which approach to follow. The best approach is to use inbuilt asp.net users for storing the logging info about user activities and using single signon technique for authentication. This article will explore the approach and provide the details of implementation using some third party libraries and customizing it to the requirements. The Authentication will be done using the following networking portals Yahoo  Gmail Facebook    Special thanks to my friend Sumit Khandelwal, for implementation of Facebook part (in fact he did it all!!) Except Facebook, all other ca...

WPF Overview-Part-II

This post is in continuation to the last post. In this Post I’ll be exploring the Dependency Properties Dependency properties are similar to CLR properties with more advanced and complex features. The main difference between the CLR properties and dependency properties is, that the value of a normal .NET property is read directly from a private member in your class, whereas the value of a DependencyProperty is resolved dynamically when calling the GetValue() method that is inherited from DependencyObject . In case this description did not make sense, no need to worry, It will become clear by the time you reach end of this article. How the Value is Resolved in Dependency properties Every time a dependency property is accessed, it internally resolves the value by following the precedence from high to low. It checks if a local value is available, if not, check if a custom style trigger is active and I the similar manner continues until it finds a value. At last the default value is alwa...

Asp.Net 4.0: An Overview-Part-III

This is the last post in the series which will explore the following new features of ASP.Net 4.0  Performance Monitoring for Individual Applications in a Single Worker Process Web.config File Refactoring Permanently Redirecting a Page Expanding the Range of Allowable URLs Performance Monitoring for Individual Applications in a Single Worker Process It is a common practice to host multiple ASP.NET applications in a single worker process, In order to increase the number of Web sites that can be hosted on a single server. This practice results in difficulties for server administrators to identify an individual application that is experiencing problems. ASP.NET 4 introduces new resource-monitoring functionality introduced by the CLR. To enable this functionality, following XML configuration snippet is added to the aspnet.config configuration file.(This file is located in the directory where the .NET Framework is installed ) <?xml version="1.0" encoding="UTF-8...