Question

I have this query be used on hibernate with java:

String hql = "select part.ID,part.PartNumber,part.Name,parttype.Name,partkind.Name,
                      partdevice.Name,part.Count,STUFF((SELECT ', ' + cabinet.Name FROM Cabinet as 
                      cabinet,Part_Cabinet as part_cabinet WHERE part.ID=part_cabinet.PaId and cabinet.ID =
                      part_cabinet.CabId FOR XML PATH('')),  1, 1, ''),part.Descript from Part as part,
                      PartDevice as partdevice,PartKind as partkind,PartType as parttype Where
                      part.Kind=partkind.ID and part.Type=parttype.ID and part.Device=partdevice.ID";
Query _q = session.createQuery(hql);

But I get an error:

unexpected token: FOR
    at org.hibernate.hql.internal.antlr.HqlBaseParser.atom(HqlBaseParser.java:3473)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.unaryExpression(HqlBaseParser.java:3168)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.multiplyExpression(HqlBaseParser.java:3040)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.additiveExpression(HqlBaseParser.java:2750)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.concatenation(HqlBaseParser.java:568)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.relationalExpression(HqlBaseParser.java:2518)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.equalityExpression(HqlBaseParser.java:2474)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.negatedExpression(HqlBaseParser.java:2343)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.logicalAndExpression(HqlBaseParser.java:2269)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.logicalOrExpression(HqlBaseParser.java:2224)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.expression(HqlBaseParser.java:2010)
    at org.hibernate.hql.internal.antlr.HqlBaseParser.logicalExpression(HqlBaseParser.java:1786)

Why?

Answer 1

The problematic part of the query is:

WHERE part.ID=part_cabinet.PaId
AND cabinet.ID = part_cabinet.CabId
FOR XML PATH('')

FOR XML PATH is a MSSQL 2005 feature absent in Hibernate. HQL is not a superset of SQL, and certainly it can’t access database specific features.

You should probably use native query for this use case as it allows you to query the database directly using SQL via Hibernate APIs.

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