Design Patterns: scenarios where common design patterns apply

Design Patterns: scenarios where common design patterns apply

Reference: http://blog.csdn.net/longronglin/article/details/1454315

Frequency	Owning type	Schema name	Mode	Simple definition
5	create	singleton	single-piece	Ensure that a class has only one instance and provides a global access point to access it.
5	structural type		combined mode	Combining objects into a tree structure to represent a partial overall relationship, composite makes the user consistent with the use of individual objects and composite objects.
5	structural type		appearance	provides a consistent interface for a set of interfaces in a subsystem, facade provides a high-level interface that makes subsystems easier to use.
5	structural type		proxy	Provides a proxy for other objects to control access to this object
5	behavioral		iterator	provides a way to sequentially access individual elements of an aggregated object without exposing the object's internal representation.
5	behavioral		viewer	defines a one-to-many dependency between objects, and when an object's state changes, all objects that depend on it are notified of Automatic Updates.
5	behavioral		Template method	The skeleton of an algorithm in an operation is defined, and some steps are deferred to a subclass, and the Template method allows subclasses to redefine the algorithm's specific steps without altering the structure of an algorithm.
4	create type		abstract factory	provides an interface that creates a series of related or interdependent objects without specifying their specific classes.
4	create type		factory method	Define an interface for creating objects, so that subclasses decide which class to instantiate, Factory method causes the instantiation of a class to be deferred to subclasses.
4	structural type		adapter	converting a class of interfaces into another interface that the customer wants, the adapter mode makes it possible for those classes to work together because the interface is incompatible.
4	structural type		decorate	dynamically adds some additional responsibilities to an object, and in terms of added functionality, the decorator mode is more flexible than generating subclasses.
4	behavioral		command	encapsulates a request as an object, allowing you to parameterize the customer with different requests, queue requests and log requests, and support revocable operations.
4	behavioral		status	allows an object to change his behavior when its internal state changes. The object seems to have changed his class.
4	behavioral		policy mode	Define a series of algorithms, encapsulate them one by one, and allow them to replace each other, this mode allows the algorithm to be independent of the customers who use them.
3	create type		generator	Separating the construction of a complex object from his presentation allows the same build process to create different representations.
3	structural type		bridge	Separating the abstract part from its implementation so that they can change independently.
3	behavioral	Responsibility	responsibility chain	so that multiple objects have a chance to process the request, This avoids the coupling relationship between the communicated and receiver of the request
2	create type		prototype
2	structural type		$
2	behavioral		mediator	Encapsulates object interactions for some columns with a mediation object.
2	behavioral		Visitor mode	represents an operation that acts on elements in an object's structure, allowing you to define new actions that act on this element without changing the individual element classes.
1	behavioral		interpreter	Given a language, define a representation of his grammar and define an interpreter that uses that representation to interpret the sentences in the language.
1	Behavioral type	Memento	Memo	captures the internal state of an object without destroying the object, and saves the state outside the object.

Design Patterns: scenarios where common design patterns apply