[hibernate-issues] [Hibernate-JIRA] Created: (HHH-4075) UnsupportedOperationException when assigning an alias to an indexed collection

[Robert Wruck (JIRA)]

UnsupportedOperationException when assigning an alias to an indexed collection
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                 Key: HHH-4075
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4075
             Project: Hibernate Core
          Issue Type: Bug
          Components: query-hql
    Affects Versions: 3.3.2
         Environment: Hibernate 3.3.2.GA, MySQL5InnoDBDialect
            Reporter: Robert Wruck


This works:

select count(*) from Order o left join o.orderAttributes oa, Attribute a
where a.id = 1
and index(oa) = a

but accessing elements throws an exception:

select count(*) from Order o left join o.orderAttributes oa, Attribute a
where a.id = 1
and oa[a] is null or oa[a] = '2'

Replacing oa[a] with o.orderAttributes[a] does not throw an exception but also does an inner join, so it's not a workaround.
Stack trace:

java.lang.UnsupportedOperationException
        at org.hibernate.hql.ast.tree.IdentNode.resolveIndex(IdentNode.java:66)
        at org.hibernate.hql.ast.tree.IndexNode.resolve(IndexNode.java:94)
        at org.hibernate.hql.ast.tree.FromReferenceNode.resolve(FromReferenceNode.java:117)
        at org.hibernate.hql.ast.tree.FromReferenceNode.resolve(FromReferenceNode.java:113)
        at org.hibernate.hql.ast.HqlSqlWalker.processIndex(HqlSqlWalker.java:956)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.addrExpr(HqlSqlBaseWalker.java:4576)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.expr(HqlSqlBaseWalker.java:1289)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.exprOrSubquery(HqlSqlBaseWalker.java:4243)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.comparisonExpr(HqlSqlBaseWalker.java:4084)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1864)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1792)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.whereClause(HqlSqlBaseWalker.java:818)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:604)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:288)
        at org.hibernate.hql.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:231)
        at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:254)
        at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185)
        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:94)
        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:1651)


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