mysql - JPA Hibernate Nested Objects -


असल में मेरे पास 3 टेबल हैं: देश, राज्य और CITY

में देश.जावा: 

  @OneToMany (कैसैडकेड = कैस्केड टाइप। आह, fetch = FetchType.EAGER) @JoinColumn (नाम = " COUNTRY_ID ") निजी सूची & lt; राज्य & gt; राज्य = नया वेक्टर & lt; राज्य & gt; ();  state.java   
  @OneToMany (cascade = CascadeType.ALL, fetch = FetchType.EAGER) में @JoinColumn (  
 Name = "STATE_ID") निजी सूची & lt; शहर & gt; शहर = नया वेक्टर & lt; शहर & gt; ();   
 जेपीए क्वेरी की तरह दिखता है:  
  caEntityManager.createQuery ("सेलेक्ट सी से देश सी। सीस्टेट एस जॉइंट फ़ेच एस.सी.टी.टी. getResultList ();   
 जब मैं क्वेरी को निष्पादित करने की कोशिश करता हूं:  
  org.hibernate.loader.MultipleBagFetchException: एक साथ कई बैग लाने नहीं कर सकता   
 मुझे यकीन है कि मेरी क्वेरी गलत है, मैं इसके लिए नया हूँ, कृपया मुझे सही दिशा में नियुक्त करें I  
 धन्यवाद   
 
 
 समस्या हाइबरनेट दो बैग नहीं ला सकता है  उत्सुक  ly। त्वरित समाधान  सूची  से  सेट  s  
 को पढ़ने के लिए होगा:  
     
  •  < / Li> 
  •    
     इसके अलावा कुछ अन्य समाधान सुझाए गए हैं।

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