JPA one-to-many relationship question (relations on one entity) -

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जेपीए उदाहरण में एक कोड है: 

  @OneToOne (cascade = CascadeType.ALL ) निजी देवता मां; @OneToOne (कैस्केड = कैस्केड टाइप। एएल) निजी देवता पिता; @OneToMany (कैस्केड = कैस्केड टाइप। एएल) निजी सेट & lt; देवता & gt; बच्चे;

पिता और माता के साथ संबंध @OneToOne एनोटेशन द्वारा लागू किया जाता है और @ManyToOne संबंध में क्यों नहीं है? यदि बाल और माता पिता अलग कक्षाएं होंगी तो माता-पिता में @OneToMany संग्रह होगा & lt; बाल & gt; बच्चों और बाल में @ManyToOne जनक माता पिता है। यह (ईश्वर) उदाहरण उचित लगता है लेकिन मैं स्पष्टीकरण की तलाश क्यों कर रहा हूं।

जेपीए विनिर्देशों के लिए लिंक बहुत सराहना की जाएगी।

मुझे लगता है कि आप सही हैं, यह होना चाहिए ManyToOne रिश्ते

यह इस कोड के लेखक से एक गलती होगी। कोड के अन्य भाग भी संदिग्ध हैं, मैं इसे बहुत अधिक भरोसा नहीं करता ...

यदि आप अच्छे दृढ़ता उदाहरण की तलाश कर रहे हैं, तो मैं हाइबरनेट दस्तावेज़ीकरण का सुझाव देता हूं। जितना संभव हो उतना जेपीए के साथ चिपक जाती है।

नोट: आप अपना कोड हाइबरनेट में स्विच कर सकते हैं या आप जो उपयोग करते हैं उसके साथ रहें और केवल उनके दस्तावेज का उपयोग कर सकते हैं ...


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