on節の未知の列 - SQLからHQLに変換されたクエリ

Question

私はHibernate 4.3.11とMySQL 5.7.11を使用しています。
私はHQLに、このMySQLのクエリを書き換えてみたかった：私はHQLにこのネイティブクエリを書き換えている

SELECT COALESCE(g1.id, g2.id) as id, COALESCE(g1.type, g2.type) as type, COALESCE(g1.email_id, g2.email_id) as email_id, COALESCE(g1.url_id, g2.url_id) as url_id FROM notifications n 
LEFT JOIN emails ON emails.id = n.email_id 
LEFT JOIN urls ON urls.id = n.url_id 
LEFT JOIN notifications_group g1 ON g1.email_id = n.email_id 
LEFT JOIN notifications_group g2 ON g2.url_id = n.url_id 
WHERE (((n.type = 'EMAIL' OR n.type = 'REMINDER') AND n.email_id is not null AND emails.user_id = :userId) 
     OR (n.type = 'URL' AND n.url_id is not null AND urls.user_id = :userId)) 
     AND (g1.id is not null OR g2.id is not null) 
     AND ((g1.id is not null AND g1.id < :beforeId) OR (g2.id is not null AND g2.id < :beforeId)) 
GROUP BY COALESCE(g1.id, g2.id) 
ORDER BY MAX(n.id) DESC 

：

SELECT COALESCE(g1.id, g2.id), COALESCE(g1.type, g2.type), COALESCE(g1.email, g2.email), COALESCE(g1.url, g2.url) FROM Notification n 
LEFT JOIN n.email e 
LEFT JOIN n.url u 
LEFT JOIN e.notificationGroup g1 
LEFT JOIN u.notificationGroup g2 
WHERE (((n.type = delimail.enums.NotificationType.EMAIL OR n.type = delimail.enums.NotificationType.REMINDER) AND e IS NOT NULL AND e.user = :user) 
     OR (n.type = delimail.enums.NotificationType.URL AND u IS NOT NULL AND u.user = :user)) 
     AND (g1 IS NOT NULL OR g2 IS NOT NULL) 
     AND ((g1.id IS NOT NULL AND g1.id < :beforeId) OR (g2 IS NOT NULL AND g2.id < :beforeId)) 
GROUP BY COALESCE(g1.id, g2.id), COALESCE(g1.type, g2.type), COALESCE(g1.email, g2.email), COALESCE(g1.url, g2.url) 
ORDER BY MAX(n.id) 

しかし、それは動作しません。

SELECT coalesce(notificati3_.id, notificati4_.id) AS col_0_0_, 
     coalesce(notificati3_.type, notificati4_.type) AS col_1_0_, 
     coalesce(notificati3_.email_id, notificati4_.email_id) AS col_2_0_, 
     coalesce(notificati3_.url_id, notificati4_.url_id) AS col_3_0_ 
FROM delimail.notifications notificati0_ 
LEFT OUTER JOIN delimail.emails email1_ ON notificati0_.email_id=email1_.id 
LEFT OUTER JOIN delimail.notifications_group notificati3_ ON email1_.id=notificati3_.email_id, 
                  delimail.emails email5_, --l 8 
                  delimail.urls url7_ --l 9 
LEFT OUTER JOIN delimail.urls url2_ ON notificati0_.url_id=url2_.id --error: Unknown column 'notificati0_.url_id' in 'on clause' 
LEFT OUTER JOIN delimail.notifications_group notificati4_ ON url2_.id=notificati4_.url_id, 
                  delimail.emails email6_, --l 12 
                  delimail.urls url8_ --l 13 
WHERE notificati3_.email_id=email5_.id --l 14 
    AND notificati3_.url_id=url7_.id --l 15 
    AND notificati4_.email_id=email6_.id --l 16 
    AND notificati4_.url_id=url8_.id --l 17 
    AND ((notificati0_.type='EMAIL' 
     OR notificati0_.type='REMINDER') 
     AND (email1_.id IS NOT NULL) 
     AND email1_.user_id=? 
     OR notificati0_.type='URL' 
     AND (url2_.id IS NOT NULL) 
     AND url2_.user_id=?) 
    AND (notificati3_.id IS NOT NULL 
     OR notificati4_.id IS NOT NULL) 
    AND ((notificati3_.id IS NOT NULL) 
     AND notificati3_.id<? 
     OR (notificati4_.id IS NOT NULL) 
     AND notificati4_.id<?) 
GROUP BY coalesce(notificati3_.id, notificati4_.id), 
     coalesce(notificati3_.type, notificati4_.type), 
     coalesce(notificati3_.email_id, notificati4_.email_id), 
     coalesce(notificati3_.url_id, notificati4_.url_id) 
ORDER BY MAX(notificati0_.id) 

とエラーは、次のとおりです：
SQL警告コード '句の' 中

不明な列 'notificati0_.url_id'：1054、SQLStateの：42S22

このクエリを生成し、休止状態

ただし、マークされた行8-9,12-13を削除し、14-17行目の条件を削除した後、このクエリは正常に機能します。
このクエリをHQLに変換するにはどうすればよいですか？それが可能ならば。

Answer 1

私は以下のサンプルを参照してくださいクエリが複雑なの一種であるから、あなたは非常によくネイティブクエリ

のために行くことができ、この場合には推測：

：以下のドキュメントを参照してください

String q="select employee_name from employee"; 
    Query query= em.createNativeQuery(q,Object[].class); 
    List<Object[]> students= query.getResultList(); 

を

http://docs.oracle.com/javaee/7/api/javax/persistence/EntityManager.html#createNativeQuery-java.lang.String-