structural design books

1. Overview In software systems, some types of software systems have two or more dimensional changes due to their own logic. How can we deal with such "multi-dimensional changes "? How can we use object-oriented technology to make this type easily change in multiple directions without introducing additional complexity? Example 1: Suppose we need at least four shape classes to draw a rectangle, a circle, an ellipse, or a square, but if the drawing needs to have different colors, such as red, g

The seven types of structural design patterns are as follows: Adapter ModeBridge ModeComposite Combination ModeDecorator decoration ModeFacade appearance ModeFlyweight meta ModeProxy ModeComparison: the adapter mode is mainly used to "reuse some existing classes, but the interfaces are inconsistent with the requirements of the Reuse Environment ", it is useful for Code reuse and class library migratio

Bridging mode is a structural design pattern. Design intent: Separate the abstract and implementation parts so that they can be independently changed. When you see the design intent, you may be a little confused, we see that the inheritance and interface are not both abstract and implementation of separation. In partic

Design Mode (7) Composite (Structural) 1. Overview In the data structure, the tree structure is very important. We can apply the tree structure to the design mode. Example 1: multi-level tree menu. Example 2: files and folders 2. Problem We can combine simple objects into complex objects, which can be combined into larger objects. We can define simple obj

design patterns are divided into three main types: creation, structure and behavior. This article describes the structural pattern.The structure mode includes adapter mode, bridge mode, combination mode, decoration mode, appearance mode, enjoy meta-mode and proxy mode.Adapter Mode: transforms the interface of a class into another interface that the customer wants. The adapter mode makes it possible for thos

the loose coupling between the subsystem and the customer, and the functional components inside the subsystem are often tightly coupled. Loosely coupled relationships make the components of a subsystem change without affecting its customers. The facade pattern helps to build a hierarchical system and also helps to layer dependencies between objects. The facade pattern eliminates complex cyclic dependencies. This is especially important when the client program and subsystem are implemented separ

(itertor) can be used to traverse the composite.(4) The Observer pattern (Visitor) should be localized in operations and behavior that should have been distributed in the composite and L e a F classes.7. Summary The combined mode decouples the internal structure of the client and complex elements, allowing the client program to handle complex elements as simple elements. If you want to create hierarchies and can treat all the elements in the same way, then the combined pattern is t

); Flycar.move (); System.out.println ("Add new features, swim in the water ....") "); Watercar wcar = new Watercar (flycar); Wcar.move ();}}Scenarios used in development: Design of input stream and output stream in IO The component functions of the graphical interface in swing package The Servlet API provides a default implementation class for the decorator design pattern of a Request obje

to a remote proxy class for cross-process access to system services or local services. Each system service is a stub object, and the client visits the corresponding stub object through a Proxy object. such as the corresponding class diagram for management management services such as the following:Windowmanagerglobal as a client through a proxy object inherited from the interface iwindowmanager IWindowManager.Stub.Proxy Cross-process access to system service Windowmanagerservice.5.Bridging mode

. Each system service is a stub object, and the client accesses the corresponding stub object through a Proxy object. For example, the class diagram for Management Management Services is as follows:Windowmanagerglobal as a client through a proxy object inherited from the interface iwindowmanager IWindowManager.Stub.Proxy Cross-process access to system service Windowmanagerservice. 5, bridge - mode The intent of the bridging mode is to separate the abstract part from its implementation, so that t

A structured pattern is used to handle a combination of classes or objects, consisting mainly of the following 7 design patterns:1. The proxy pattern is to provide a proxy for other objects to control access to the object.2. Decorator mode (Decorator pattern) dynamically adds some additional responsibilities to an object. This mode is more flexible than generating subclasses as far as adding functionality is concerned.3. The adapter mode (Adapter patt

Java implementation of structural design patterns-appearance patterns I. Description The appearance mode is also called the facade mode, which is to package a complex system. The external interfaces of the system are provided by the appearance class. When a complex system needs to provide external interfaces, it needs to encapsulate the interfaces provided externally in a uniform appearance class for extern

-composite"); the Composite Parentcomposite; - Composite Composite; in leaf leaf; the theParentcomposite =Root; AboutComposite =NewComposite ("First Level-first sibling-composite"); the Parentcomposite. ADD (composite); theleaf =NewLeaf ("First Level-second sibling-leaf"); the Parentcomposite. Add (leaf); +Parentcomposite =Composite; -Composite =NewComposite ("Second Level-first sibling-composite"); the Parentcomposite. ADD (composite);BayiComposite =NewComposite ("Second Level-second sibling-c

{ - Public voidQuiteadifferentrequest (stringstr) - { theConsole.WriteLine ("quiteadifferentrequest = {0}", str); - } - } - + classOuradapter:frameworkxtarget - { + PrivateFrameworkyadaptee adaptee =Newframeworkyadaptee (); A Override Public voidSomerequest (inta) at { - stringb; -b =a.tostring (); - Adaptee. Quiteadifferentrequest (b); - } - } in - /// to ///Summary description

spray red Paint:" +this.c.getcolor ()); }}Then new decorator subclass: Blue Decorator class:public class Decorate_blue_car extends decorate_car{ /* * Corresponding decoration of the car * */@Overridepublic void Printcolor () {//To Do auto-generated method Stubsuper.printcolor (); This.c.setcolor (": Blue"); SYSTEM.OUT.PRINTLN ("Blue Decoration factory on Audi car spray blue Paint:" +this.c.getcolor ()); }}Test:public class Test {public static void main (string[] args) {//TODO auto-ge

(); One } A} 1 public interface person { 2 3 void Eat (); 4 } 1 Public class Implements Person {23 Public void eat () {4 System.out.println ("Men are eating"); 5 }6 }1 Public Abstract classDecoratorImplementsPerson {2 3 protectedperson person ;4 5 Public voidSetperson (person person) {6 This. person =Person ;7 }8 9 Public voideat () {Ten person.eat (); One } A}1 Public classMandecoratoraextendsDecorator {2 3 Public voi

This. Name =name;9 }Ten One PublicString GetName () { A return This. Name; - } - the Public Abstract voidAdd (Employer employer); - - Public Abstract voidDelete (employer employer); - + PublicListemployers; - + Public voidPrintinfo () { A System.out.println (name); at } - - PublicListgetemployers () { - return This. Employers; - } -}1 Importjava.util.ArrayList;2 3 Public classProjectmanagere

java.util.list;/** * Adapter class: Convert a list Type people table to a people table of map type * @ Author Tong * */public class Mapadapter extends Hashmap{private list list;public mapadapter (List list) {this.list = list;} public int size () {return list.size ();} public object Get (Object object) {return List.get (new Integer (Object.ToString ())). Intvalue ());}}4. The client calls the classPackage tong.day5_4.adapter;//Client view class public class Client {public static void main (strin

more money in Third-party source code management systems. Many companies that use COM technology ignore the need for shared source code because they follow each project as a development (one-developer-per-project) rule. But because of the. NET platform develops components that are highly reusable, so many application developers become teams that create reusable components or subsystems, rather than individuals who develop individual systems. These environments require efficient source control,

Author qq:1095737364 QQ Group: 123300273 Welcome to join.1. Pattern Definition:The enjoy meta mode is the structure mode of the object. The enjoy meta mode efficiently supports a large number of fine-grained objects in a shared manner.2. Mode features:The enjoy meta-mode is a design mode that takes system performance into account, and it can save memory space and improve the performance of the system by using the enjoy meta-mode. 　　When there are a la