这是正确的工厂方法模式吗? [英] Is this correct factory method pattern?

问题描述

我知道有很多类似的问题，但是我大部分都不理解，因为我不确定我是否知道什么是工厂方法模式.

I know that there are many similar questions, but I don't understand most of those questions because I'm not sure if I know what a factory method pattern is..

所以..在网上阅读了许多示例之后，我想到了以下简单的类.

so..after reading many examples over the web, I came up with the following simple classes.

我做对了吗?

abstract class Driveable
{
    abstract public function start();
    abstract public function stop();

}

class CoupeDriveable extends Driveable
{
    public function start()
    {
    }

    public function stop()
    {
    }
}

class MotorcycleDriveable extends Driveable
{
    public function start()
    {
    }

    public function stop()
    {
    }   
}

class SedanDriveable extends Driveable
{
    public function start()
    {
    }

    public function stop()
    {
    }   
}

class DriveableFactory
{
    static public function create($numberOfPeople){

        if( $numberOfPeople == 1 )
        {
            return new MotorcycleDriveable;
        }       
        elseif( $numberOfPeople == 2 )
        {
            return new CoupleDriveable;
        }
        elseif( $numberOfPeople >= 3 && $numberOfPeople < 4)
        {
            return SedanDriveable;
        }
    }
}


class App
{
    static public function getDriveableMachine($numberOfPeople)
    {
        return DriveableFactory::create($numberOfPeople);
    }
}


$DriveableMachine = App::getDriveableMachine(2);
$DriveableMachine->start();

推荐答案

是.这是factory method模式的正确实现.

Yes. That's a correct implementation of the factory method pattern.

编辑 +1，以静默发表评论.确实应该在coderewiew上，没想到.

Edit +1 for silent's comment. Should indeed be on coderewiew, didn't thought about that.

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