Created
May 5, 2022 20:08
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Visitor Design Pattern
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| <?php | |
| //Sınıfa eklenecek olan özelliğin belirlenmesi | |
| interface FeatureInterface | |
| { | |
| public function accept(Visitor $visitor); | |
| } | |
| class FeatureA implements FeatureInterface | |
| { | |
| public function accept(Visitor $visitor) | |
| { | |
| return $visitor->featureAworkA($this); //this verilerek mevcut sınıfa ait işlemler yapılabilir. | |
| } | |
| } | |
| class FeatureB implements FeatureInterface | |
| { | |
| public function accept(Visitor $visitor) | |
| { | |
| return $visitor->featureBworkB($this); //this verilerek mevcut sınıfa ait işlemler yapılabilir. | |
| } | |
| } | |
| //Farklı yeteneklere sahip ziyaretçi | |
| //Bildiğin sınıfların işlerini yapıyor | |
| interface Visitor | |
| { | |
| public function featureAworkA(FeatureA $featureA); | |
| public function featureBworkB(FeatureB $featureB); | |
| } | |
| class Report implements Visitor | |
| { | |
| public function featureAworkA(FeatureA $featureA) | |
| { | |
| return 'Visitor Feature A -> work A'; | |
| } | |
| public function featureBworkB(FeatureB $featureB) | |
| { | |
| return 'Visitor Feature B -> work B'; | |
| } | |
| } | |
| //Visitor | |
| $report = new Report(); | |
| //Özellik sınıfları | |
| $featureA = new FeatureA(); | |
| $featureB = new FeatureB(); | |
| //Ek yeteneklerin kazandırılması. | |
| echo $featureA->accept($report); | |
| echo $featureB->accept($report); | |
| //Output: | |
| //Visitor Feature A -> work A | |
| //Visitor Feature B -> work B |
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