Swift 03 建造者模式 Builder Pattern

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/*把统一复杂的工序、细分成不同的简单工序能够轻易增加、修改工序*/// 药品 复杂产品class MedicineProduct {    var p_stName : String = ""    var p_mNumber : Int = 0    var p_stPacking : String = ""    var p_stExpiryDate : String = ""    var p_stLocation : String = ""}// 生产员 抽象建造者class Builder {func buildName() { }func getProduct() -> MedicineProduct {     return MedicineProduct()}}// 阿司匹林 具体建造者class AspirinProduct : Builder {override func buildName() {medicineProduct.p_stName = "Aspirin"medicineProduct.p_mNumber = 100medicineProduct.p_stPacking = "box"        medicineProduct.p_stExpiryDate = "1 year"        medicineProduct.p_stLocation = "ZhuHai"}override func getProduct() -> MedicineProduct {    return medicineProduct}        var medicineProduct = MedicineProduct()}// 阿司匹林 具体建造者class ParacetamolProduct : Builder {override func buildName() {medicineProduct.p_stName = "Paracetamol"medicineProduct.p_mNumber = 80medicineProduct.p_stPacking = "package"        medicineProduct.p_stExpiryDate = "2 years"        medicineProduct.p_stLocation = "ShanZhun"}override func getProduct() -> MedicineProduct {    return medicineProduct}        var medicineProduct = MedicineProduct()}// 装货员 指挥者class Managaer {    var builder = Builder()    func Construct(c_concreteBuilder : Builder) -> MedicineProduct {        builder = c_concreteBuilder        builder.buildName()        return builder.getProduct()    }}// 客戶端let managaer = Managaer()// 客戶只需要更改药物的建造者、即工厂类、就能完成不同工厂的复杂包装程序let product = managaer.Construct(c_concreteBuilder: AspirinProduct())print("Name: \(product.p_stName) Number: \(product.p_mNumber) Packing: \(product.p_stPacking) ExpiryDate: \(product.p_stExpiryDate) Location: \(product.p_stLocation)")let product2 = managaer.Construct(c_concreteBuilder: ParacetamolProduct())print("Name: \(product2.p_stName) Number: \(product2.p_mNumber) Packing: \(product2.p_stPacking) ExpiryDate: \(product2.p_stExpiryDate) Location: \(product2.p_stLocation)")
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