组合实体模式

//compositeEntity
class DependentObject1
{
    private $data = null;
    
    public function setData($data)
    {
        $this->data = $data;
    }
    
    public function getData()
    {
        return $this->data;
    }
}

class DependentObject2
{
    private $data = null;
    
    public function setData($data)
    {
        $this->data = $data;
    }
    
    public function getData()
    {
        return $this->data;
    }
}

class CoarseGrainedObject
{
    public $data1 = null;
    public $data2 = null;
    
    public function __construct()
    {
        $this->data1 = new DependentObject1();
        $this->data2 = new DependentObject2();
    }
    
    public function setData($do1, $do2)
    {
        $this->data1->setData($do1);
        $this->data2->setData($do2);
    }
    
    public function getData()
    {
        return [
            $this->data1->getData(),
            $this->data2->getData(),
        ];
    }
}

class CompositeEntity
{
    private $cgo = null;
    
    public function __construct()
    {
        $this->cgo = new CoarseGrainedObject();
    }
    public function setData($data1, $data2)
    {
        $this->cgo->setData($data1, $data2);
    }
    
    public function getData()
    {
        return $this->cgo->getData();
    }
}

class Client
{
    private $compositeEntity = null;
    
    public function __construct()
    {
        $this->compositeEntity = new CompositeEntity();
    }
    public function printData()
    {
        $getData = $this->compositeEntity->getData();
        $getDataLen = count($getData);
        for ($i = 0; $i < $getDataLen; $i++) {
         echo "Data: " . $getData[$i];
        }
    }
    
    public function setData($data1, $data2)
    {
        $this->compositeEntity->setData($data1, $data2);
    }
}

$Client = new Client();
$Client->setData("Test", "Data");
$Client->printData();
$Client->setData("Second Test", "Data1");
$Client->printData();

参考文章 http://www.runoob.com/design-pattern/composite-entity-pattern.html