这个HQL有什么问题? “无节点的数据类型” [英] What's wrong with this HQL? "No data type for node"
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问题描述
session.createQuery( 从GoodsSection TGS选择属性 +
加入gs.ascendants AGS加入ags.attributes属性 +
,其中attribute.outerId =:outerId和TGS =:部分 )
.setString( outerId,pOuterId)
.setEntity( 部分,节)
.setMaxResults(1)
。 uniqueResult();
看起来对我来说很好,但结果是
java.lang.IllegalStateException:org.hibernate.hql.ast.tree.IdentNode
\- [IDENT] IdentNode: '属性' 的节点没有任何数据类型{originalText =属性}
$在org.hibernate.hql.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:145)b
$ b。在org.hibernate.hql.ast.HqlSqlWalker.useSelectClause (HqlSqlWalker.java:705)在org.hibernate.hql.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:529)
在org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java :645)在org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:281
)
在org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:229)
为什么?有什么不对?
解决方案
您还没有定义gs别名。你只有ags和tgs。
session.createQuery("Select attribute from GoodsSection tgs " +
"join gs.ascendants ags join ags.attributes attribute " +
"where attribute.outerId = :outerId and tgs = :section ")
.setString("outerId", pOuterId)
.setEntity("section", section)
.setMaxResults(1)
.uniqueResult();
Looks fine to me, but the result is
java.lang.IllegalStateException: No data type for node: org.hibernate.hql.ast.tree.IdentNode
\-[IDENT] IdentNode: 'attribute' {originalText=attribute}
at org.hibernate.hql.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:145)
at org.hibernate.hql.ast.HqlSqlWalker.useSelectClause(HqlSqlWalker.java:705)
at org.hibernate.hql.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:529)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:645)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:281)
at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:229)
Why? What's wrong?
解决方案
You haven't defined the "gs" alias. You only have "ags" and "tgs".
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