Table of Contents
PHP设计模式——建造者模式
Home php教程 php手册 PHP设计模式建造者模式

PHP设计模式建造者模式

Jun 13, 2016 am 09:05 AM
model Design Patterns

PHP设计模式——建造者模式

 

建造者模式也称生成器模式,核心思想是将一个复杂对象的构造与它的表示分离,使同样的构建过程可以创建不同的表示,这样的设计模式被称为建造者模式。

 

例如:汽车,他的发动机引擎有好多品牌,轮胎也有各种材质,内饰更是千奇百怪;鸟,他的头、翅膀以及脚有各种颜色和形状,在创建这种复杂对象的时候,我们建议使用建造者模式。

 

类图:

 

建造者模式一般认为有四个角色:

1.产品角色,产品角色定义自身的组成属性

2.抽象建造者,抽象建造者定义了产品的创建过程以及如何返回一个产品

3.具体建造者,具体建造者实现了抽象建造者创建产品过程的方法,给产品的具体属性进行赋值定义

4.指挥者,指挥者负责与调用客户端交互,决定创建什么样的产品

 

代码:

 

<!--?php
/**
 * Created by PhpStorm.
 * User: Jiang
 * Date: 2015/4/25
 * Time: 9:31
 */

/**具体产品角色  鸟类
 * Class Bird
 */
class Bird
{
    public $_head;
    public $_wing;
    public $_foot;

    function show()
    {
        echo 头的颜色:{$this--->_head}
;
        echo 翅膀的颜色:{$this->_wing}
;
        echo 脚的颜色:{$this->_foot}
;
    }
}

/**抽象鸟的建造者(生成器)
 * Class BirdBuilder
 */
abstract class BirdBuilder
{
    protected $_bird;

    function __construct()
    {
        $this->_bird=new Bird();
    }

    abstract function BuildHead();
    abstract function BuildWing();
    abstract function BuildFoot();
    abstract function GetBird();
}

/**具体鸟的建造者(生成器)   蓝鸟
 * Class BlueBird
 */
class BlueBird extends BirdBuilder
{

    function BuildHead()
    {
        // TODO: Implement BuilderHead() method.
        $this->_bird->_head=Blue;
    }

    function BuildWing()
    {
        // TODO: Implement BuilderWing() method.
        $this->_bird->_wing=Blue;
    }

    function BuildFoot()
    {
        // TODO: Implement BuilderFoot() method.
        $this->_bird->_foot=Blue;
    }

    function GetBird()
    {
        // TODO: Implement GetBird() method.
        return $this->_bird;
    }
}

/**玫瑰鸟
 * Class RoseBird
 */
class RoseBird extends BirdBuilder
{

    function BuildHead()
    {
        // TODO: Implement BuildHead() method.
        $this->_bird->_head=Red;
    }

    function BuildWing()
    {
        // TODO: Implement BuildWing() method.
        $this->_bird->_wing=Black;
    }

    function BuildFoot()
    {
        // TODO: Implement BuildFoot() method.
        $this->_bird->_foot=Green;
    }

    function GetBird()
    {
        // TODO: Implement GetBird() method.
        return $this->_bird;
    }
}

/**指挥者
 * Class Director
 */
class Director
{
    /**
     * @param $_builder      建造者
     * @return mixed         产品类:鸟
     */
    function Construct($_builder)
    {
        $_builder->BuildHead();
        $_builder->BuildWing();
        $_builder->BuildFoot();
        return $_builder->GetBird();
    }
}
Copy after login

调用客户端测试代码:

header(Content-Type:text/html;charset=utf-8);
//------------------------生成器模式测试代码------------------
require_once ./Builder/Builder.php;

$director=new Director();

echo 蓝鸟的组成:
Copy after login

; $blue_bird=$director->Construct(new BlueBird()); $blue_bird->Show(); echo
Rose鸟的组成:
; $rose_bird=$director->Construct(new RoseBird()); $rose_bird->Show();
PHP面向对象设计模式

 

 

 

 

 

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

The difference between design patterns and architectural patterns in Java framework The difference between design patterns and architectural patterns in Java framework Jun 02, 2024 pm 12:59 PM

In the Java framework, the difference between design patterns and architectural patterns is that design patterns define abstract solutions to common problems in software design, focusing on the interaction between classes and objects, such as factory patterns. Architectural patterns define the relationship between system structures and modules, focusing on the organization and interaction of system components, such as layered architecture.

Analysis of the Decorator Pattern in Java Design Patterns Analysis of the Decorator Pattern in Java Design Patterns May 09, 2024 pm 03:12 PM

The decorator pattern is a structural design pattern that allows dynamic addition of object functionality without modifying the original class. It is implemented through the collaboration of abstract components, concrete components, abstract decorators and concrete decorators, and can flexibly expand class functions to meet changing needs. In this example, milk and mocha decorators are added to Espresso for a total price of $2.29, demonstrating the power of the decorator pattern in dynamically modifying the behavior of objects.

PHP design pattern practical case analysis PHP design pattern practical case analysis May 08, 2024 am 08:09 AM

1. Factory pattern: Separate object creation and business logic, and create objects of specified types through factory classes. 2. Observer pattern: allows subject objects to notify observer objects of their state changes, achieving loose coupling and observer pattern.

How design patterns deal with code maintenance challenges How design patterns deal with code maintenance challenges May 09, 2024 pm 12:45 PM

Design patterns solve code maintenance challenges by providing reusable and extensible solutions: Observer Pattern: Allows objects to subscribe to events and receive notifications when they occur. Factory Pattern: Provides a centralized way to create objects without relying on concrete classes. Singleton pattern: ensures that a class has only one instance, which is used to create globally accessible objects.

The wonderful use of the adapter pattern in Java design patterns The wonderful use of the adapter pattern in Java design patterns May 09, 2024 pm 12:54 PM

The Adapter pattern is a structural design pattern that allows incompatible objects to work together. It converts one interface into another so that the objects can interact smoothly. The object adapter implements the adapter pattern by creating an adapter object containing the adapted object and implementing the target interface. In a practical case, through the adapter mode, the client (such as MediaPlayer) can play advanced format media (such as VLC), although it itself only supports ordinary media formats (such as MP3).

PHP Design Patterns: Test Driven Development in Practice PHP Design Patterns: Test Driven Development in Practice Jun 03, 2024 pm 02:14 PM

TDD is used to write high-quality PHP code. The steps include: writing test cases, describing the expected functionality and making them fail. Write code so that only the test cases pass without excessive optimization or detailed design. After the test cases pass, optimize and refactor the code to improve readability, maintainability, and scalability.

Application of design patterns in Guice framework Application of design patterns in Guice framework Jun 02, 2024 pm 10:49 PM

The Guice framework applies a number of design patterns, including: Singleton pattern: ensuring that a class has only one instance through the @Singleton annotation. Factory method pattern: Create a factory method through the @Provides annotation and obtain the object instance during dependency injection. Strategy mode: Encapsulate the algorithm into different strategy classes and specify the specific strategy through the @Named annotation.

What are the advantages and disadvantages of using design patterns in java framework? What are the advantages and disadvantages of using design patterns in java framework? Jun 01, 2024 pm 02:13 PM

The advantages of using design patterns in Java frameworks include: enhanced code readability, maintainability, and scalability. Disadvantages include complexity, performance overhead, and steep learning curve due to overuse. Practical case: Proxy mode is used to lazy load objects. Use design patterns wisely to take advantage of their advantages and minimize their disadvantages.

See all articles