2024-07-12
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Proxy Exemplum exemplar est sistens descriptionem quae regit accessum ad aliud obiectum per quod procuratorem inducendo. Procurator hoc obiectum praebere potest additionalem functionem ad objectum proximum, ut accessum moderandi, iners initialization, logging, aut retis accessum.
remotis agente:
virtualis agente:
tutela agente:
Dolor ductu:
Simplex exsecutio exemplum est exemplum procuratoris, ostendens quomodo refrenare aditum ad actu per obiectum per procuratorem.
public interface Subject {
void request();
}
Subject
Interface definit arequest
Methodus, haec est ratio, qua tam obiectum ipsum quam procuratorem opus ad effectum deducendi.public class RealSubject implements Subject {
public void request() {
System.out.println("RealSubject: Handling request.");
}
}
RealSubject
genus implementedSubject
Interfacerequest
Methodus repraesentans classium, quae in actu petitionem tractat.public class Proxy implements Subject {
private RealSubject realSubject;
public Proxy(RealSubject realSubject) {
this.realSubject = realSubject;
}
public void request() {
if (this.checkAccess()) {
this.realSubject.request();
this.logAccess();
}
}
private boolean checkAccess() {
// 检查访问权限
System.out.println("Proxy: Checking access prior to firing a real request.");
return true;
}
private void logAccess() {
// 记录请求日志
System.out.println("Proxy: Logging the time of request.");
}
}
Proxy
genus implementedSubject
interface et tenet a *RealSubject
objectum.request
In modo, procurator classis primum accessum permissionum impedit ac deinde realem obiecti vocatrequest
methodo, postremo notare rogationem log.public class Client {
public static void main(String[] args) {
RealSubject realSubject = new RealSubject();
Proxy proxy = new Proxy(realSubject);
proxy.request();
}
}
Client
genus creatum estRealSubject
etProxy
obiecto perProxy
Object vocatiorequest
modum regendiRealSubject
Obvius.Separatio:
salus:
Scalability:
Intelligent:
codice multiplicitate:
Responsio tempus:
Design difficultas:
Client
|
v
Subject <---- Proxy <---- RealSubject
Procurator exemplar praebet viam efficientem ad refrenandum et accessum ad res agendas. Adhibitis procuratoribus varias functiones addere potes, servatis muneribus obiectorum officiorum clarorum. Hic modus aptissimus est missionibus qui accessum moderandi requirunt et alias operationes praeprocessiones in negotiis negotiis.
Facade Pattern exemplar est structuralis ratio quae subsystems implicatos faciliorem adhibet ut praebeat unum interfaciem ad accessum ad coetus interfaces in subsystem. Facies exemplar interface summus gradus definit, qui hoc subsystem faciliorem reddit.
Simplify interfaces in universa systemata:
Hierarchia:
Decoupled system:
Simplex exsecutio exemplum Facade exemplaris est, ostendens quomodo simpliciorem reddere usum subsystematum per os classes.
public class SubsystemA {
public void operationA() {
System.out.println("SubsystemA: operationA");
}
}
public class SubsystemB {
public void operationB() {
System.out.println("SubsystemB: operationB");
}
}
public class SubsystemC {
public void operationC() {
System.out.println("SubsystemC: operationC");
}
}
public class Facade {
private SubsystemA subsystemA;
private SubsystemB subsystemB;
private SubsystemC subsystemC;
public Facade() {
this.subsystemA = new SubsystemA();
this.subsystemB = new SubsystemB();
this.subsystemC = new SubsystemC();
}
public void operation1() {
System.out.println("Facade: operation1");
subsystemA.operationA();
subsystemB.operationB();
}
public void operation2() {
System.out.println("Facade: operation2");
subsystemB.operationB();
subsystemC.operationC();
}
}
public class Client {
public static void main(String[] args) {
Facade facade = new Facade();
facade.operation1();
facade.operation2();
}
}
Subsystem genus:
SubsystemA
, SubsystemB
, et SubsystemC
Exsecutio specifica genus est subsystem, et unaquaeque classis suam propriam operationis rationem habet.Species genus:
Facade
Classes obiecti subsystem tenent et simpliciores interfaces praebentoperation1
etoperation2
subsystem vocare munera.clientis code:
Client
classis TransieruntFacade
genus vocareoperation1
etoperation2
ita simpliciorem reddere usum subsystematum complexorum.Simplicior interface:
solutam copulationem:
melius layering:
Non propinquos meos cum aperto-propinquo principio:
Sit causa perficientur quaestiones:
Client
|
v
Facade ----> SubsystemA
----> SubsystemB
----> SubsystemC
Facade forma opus facit cum subsystematibus complexis faciliorem praebendo interfaciem simpliciorem. Idoneum est missionibus ubi opus est subsystem interface simpliciorem reddere, directam commercium inter clientem et subsystem reducere et hierarchiam systematis decoquere. Quamvis potentia apertam clausuram violandi habet, in pluribus commodis eius incommodis longe praeponderat, clarius et facilius ratio consilium sustinens.