new approach for builder pattern

builder/builder.ts

@@ -1,69 +1,100 @@
 namespace BuilderPattern {
- export class UserBuilder {
+ export interface Builder<T> {
+ setAge?(value: number): void;
+ setPhone?(value: string): void;
+ setAddress?(value: string): void;
+ build(): T;
+ }
+
+ export class User {
  private name: string;
  private age: number;
  private phone: string;
  private address: string;
 
- constructor(name: string) {
- this.name = name;
+ constructor(builder: UserBuilder) {
+ this.name = builder.Name;
+ this.age = builder.Age;
+ this.phone = builder.Phone;
+ this.address = builder.Address
  }
 
  get Name() {
  return this.name;
  }
- setAge(value: number): UserBuilder {
- this.age = value;
- return this;
- }
+
  get Age() {
  return this.age;
  }
- setPhone(value: string): UserBuilder {
- this.phone = value;
- return this;
- }
+
  get Phone() {
  return this.phone;
  }
- setAddress(value: string): UserBuilder {
- this.address = value;
- return this;
- }
+
  get Address() {
  return this.address;
  }
 
- build(): User {
- return new User(this);
- }
  }
 
- export class User {
+ export class UserBuilder implements Builder<User> {
  private name: string;
  private age: number;
  private phone: string;
  private address: string;
 
- constructor(builder: UserBuilder) {
- this.name = builder.Name;
- this.age = builder.Age;
- this.phone = builder.Phone;
- this.address = builder.Address
+ constructor(name: string) {
+ this.name = name;
  }
 
  get Name() {
  return this.name;
  }
+ setAge(value: number): UserBuilder {
+ this.age = value;
+ return this;
+ }
  get Age() {
  return this.age;
  }
+ setPhone(value: string): UserBuilder {
+ this.phone = value;
+ return this;
+ }
  get Phone() {
  return this.phone;
  }
+ setAddress(value: string): UserBuilder {
+ this.address = value;
+ return this;
+ }
  get Address() {
  return this.address;
  }
+
+ getUser(){
+ return this;
+ }
+
+ build(): User {
+ return new User(this);
+ }
  }
 
+ export class Director {
+ constructor(private userbuilder: UserBuilder){}
+
+ makeUser() {
+ if(this.userbuilder.Name === 'Jancsi') {
+ this.userbuilder.setAge(12)
+ .setPhone("0123456789")
+ .setAddress("asdf");
+ } else {
+ this.userbuilder.setAge(0)
+ .setPhone("xxxxxxxxx")
+ .setAddress("xxxx");
+ }
+ }
+
+ }
 }

builder/demo.ts

@@ -3,12 +3,13 @@
 namespace BuilderPattern {
  export namespace Demo {
  export function show() : void {
- var u: BuilderPattern.User = new BuilderPattern.UserBuilder("Jancsi")
- .setAge(12)
- .setPhone("0123456789")
- .setAddress("asdf")
- .build();
- console.log(u.Name + " " + u.Age + " " + u.Phone + " " + u.Address);
+ let userBuilder: BuilderPattern.UserBuilder = new BuilderPattern.UserBuilder("Jancsi")
+
+ let director: BuilderPattern.Director = new BuilderPattern.Director(userBuilder);
+ director.makeUser();
+
+ let user: BuilderPattern.User = userBuilder.build();
+ console.log(user.Name + " " + user.Age + " " + user.Phone + " " + user.Address);
  }
  }
 }