休眠嵌套查询

我们正努力创造冬眠特定查询下面 lSession.createQuery(lQueryString.toString()); ............休眠嵌套查询

INSERT INTO EMPLOYEE_HISTORY (emp_status, 
           createdBy, 
           releasedate, 
           year) 
    SELECT CASE n.emp_Status WHEN 0 THEN 'Draft' ELSE 'Final' END, 
      m.createdBy, 
      m.releasedate, 
      m.year 
    FROM EMPLOYEE m, (SELECT COUNT (1) EMPLOYEE_HISTORY b,EMPLOYEE a where a.emplid=b.emplid and a.year=b.year and b.year=2012 and a.doc_id='XYZ') n 
    where a.doc_id='xyz' 

getting following exception,I guess it because of below statement in query 
(SELECT COUNT (1) EMPLOYEE_HISTORY b,EMPLOYEE a where a.emplid=b.emplid and a.year=b.year and b.year=2012 and a.doc_id='XYZ') n 


org.hibernate.hql.ast.QuerySyntaxException: unexpected token: (near line 1, column 374 
INSERT INTO EMPLOYEE_HISTORY (emp_status, 
           createdBy, 
           releasedate, 
           year) 
    SELECT CASE n.emp_Status WHEN 0 THEN 'Draft' ELSE 'Final' END, 
      m.createdBy, 
      m.releasedate, 
      m.year 
    FROM EMPLOYEE m, (SELECT COUNT (1) EMPLOYEE_HISTORY b,EMPLOYEE a where a.emplid=b.emplid and a.year=b.year and b.year=2012 and a.doc_id='XYZ') n 
    where a.doc_id='xyz'

例外

at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:54) 
    at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:47) 
    at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:82) 
    at org.hibernate.hql.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:284) 
    at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:182) 
    at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:136) 
    at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:101) 
    at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:80) 
    at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:124) 
    at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:156) 
    at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:135) 
    at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1770)

请提供，如果任何建议/投入。

来源

2013-03-13 Goutham

看起来，就像您将SQL而不是HQL传递给Session.createQuery（...）方法一样。

参见：http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/objectstate.html#objectstate-querying-executing

例如在：

INSERT INTO EMPLOYEE_HISTORY (...)

'EMPLOYEE_HISTORY' 应该是实体类的名称（如EmployeeHistory）不是表名称。

在HQL您可以使用您的实体定义的引用要经过协会避免隐性通过IDS的加盟，就像你在这里做

where a.emplid=b.emplid and ...

从上面的URL考虑例如

另外：

select mother from Cat as cat join cat.mother as mother where cat.name = ?

来源

2013-03-13 10:48:35

休眠嵌套查询

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