建造者模式 生成器模式 创建型 设计模式(五)

package builder;
public interface MainBoard {
String desc();
}

package builder;
public class DellMainBoard implements MainBoard {
@Override
public String desc() {
return "DELL mainBoard";
}
}

package builder;
public class AsusMainBoard implements MainBoard {
@Override
public String desc() {
return "ASUS mainBoard";
}
}

package builder;
public interface DisplayDevice {
String Desc();
}

package builder;
public class DellDisplayDevice implements DisplayDevice {
@Override
public String Desc() {
return "DELL display device";
}
}

package builder;
public class AsusDisplayDevice implements DisplayDevice {
@Override
public String Desc() {
return "ASUS display device";
}
}

package builder;
public interface Creator {
MainBoard createMainBoard();
DisplayDevice createDisplayDevice();
}

package builder;
public class ConcreateCreatorDell implements Creator {
@Override
public MainBoard createMainBoard() {
return new DellMainBoard();
}
@Override
public DisplayDevice createDisplayDevice() {
return new DellDisplayDevice();
}
}

package builder;
public class ConcreateCreatorAsus implements Creator {
@Override
public MainBoard createMainBoard() {
return new AsusMainBoard();
}

@Override
public DisplayDevice createDisplayDevice() {
return new AsusDisplayDevice();
}
}

package builder;
public class AssembleComputer {
Creator creator;
AssembleComputer(Creator creator){
this.creator = creator;
}

public Computer getComputer(){
Computer computer = new Computer();
MainBoard mainBoard = creator.createMainBoard();
DisplayDevice displayDevice = creator.createDisplayDevice();
computer.setMainBoard(mainBoard);
computer.setDisplayDevice(displayDevice);
return computer;
}
}

package builder;
public class AssembleComputerRefactor {
CreatorRefactor creatorRefactor;
AssembleComputerRefactor(CreatorRefactor creatorRefactor){
this.creatorRefactor = creatorRefactor;
}

public Computer getComputer(){
creatorRefactor.assembleMainBoard();
creatorRefactor.assembleDisplayDevice();
return creatorRefactor.getComputer();
}
}

package buildPattern;
public interface Builder {
void buildPart1();
void buildPart2();
Product buildProduct();
}

package buildPattern;
 
public class ConcreateBuilder implements Builder {
private Product product = new Product();
 
@Override
public void buildPart1() {
//...
}
 
@Override
public void buildPart2() {
//...
}
 
@Override
public Product buildProduct() {
return product;
}
}

package buildPattern;
public class Product {
}

package buildPattern;
 
public class Director {
 
private Builder builder;
 
Director(Builder builder) {
this.builder = builder;
}
 
public Product getProduct() {
builder.buildPart1();
builder.buildPart2();
return builder.buildProduct();
}
} 

package simplebuilder;
 
/**
* Created by noteless on 2018/10/17.
* Description:假定有一个MyObject类,有7个属性前面两个v1 和 v2 是必选,其余可选
*
* @author noteless
*/
public class MyObject {
 
private int v1;//必选
private int v2;//必选
private int v3;//可选
private int v4;//可选
private int v5;//可选
private int v6;//可选
private int v7;//可选
 
private static class Builder {
 
private int v1;
private int v2;
 
private int v3 = 0;
private int v4 = 0;
private int v5 = 0;
private int v6 = 0;
private int v7 = 0;
 
public Builder(int v1, int v2) {
this.v1 = v1;
this.v2 = v2;
}
 
public Builder setV3(int v3) {
this.v3 = v3;
return this;
}
 
public Builder setV4(int v4) {
this.v4 = v4;
return this;
}
 
public Builder setV5(int v5) {
this.v5 = v5;
return this;
}
 
public Builder setV6(int v6) {
this.v6 = v6;
return this;
}
 
public Builder setV7(int v7) {
this.v7 = v7;
return this;
}
 
public MyObject build() {
return new MyObject(this);
}
}
 
private MyObject(Builder builder) {
v1 = builder.v1;
v2 = builder.v2;
v3 = builder.v3;
v4 = builder.v4;
v5 = builder.v5;
v6 = builder.v6;
v7 = builder.v7;
}
 
@Override
public String toString() {
final StringBuilder sb = new StringBuilder("MyObject{");
sb.append("v1=").append(v1);
sb.append(", v2=").append(v2);
sb.append(", v3=").append(v3);
sb.append(", v4=").append(v4);
sb.append(", v5=").append(v5);
sb.append(", v6=").append(v6);
sb.append(", v7=").append(v7);
sb.append('}');
return sb.toString();
}
 
public static void main(String[] args) {
 
MyObject my = new MyObject.Builder(1, 2).
setV3(3).setV4(4).setV5(5).setV6(6).setV7(7).build();
System.out.println(my.toString());
}
}