[hibernate-issues] [Hibernate-JIRA] Closed: (HHH-1643) Sub-query as function parameter - either sub-query is missed from SQL or NullPointerException raised
Steve Ebersole (JIRA)
noreply at atlassian.com
Wed Aug 18 13:29:41 EDT 2010
[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1643?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Steve Ebersole closed HHH-1643.
-------------------------------
Resolution: Fixed
> Sub-query as function parameter - either sub-query is missed from SQL or NullPointerException raised
> ----------------------------------------------------------------------------------------------------
>
> Key: HHH-1643
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1643
> Project: Hibernate Core
> Issue Type: Bug
> Components: query-hql
> Affects Versions: 3.1.2, 3.1.3
> Environment: Hibernate 3.1.2 MS SQL Server 2K
> Reporter: Andy Shelton
> Assignee: Steve Ebersole
> Fix For: 3.6.0.Beta3, 3.5.5
>
> Attachments: hql-sql.patch
>
> Time Spent: 35m
> Remaining Estimate: 0h
>
> The HQL grammar HQL (hql.g) allows expressions and sub-queries as parameters to functions, however the SQL Tree Transform grammar (hql-sql.g) does not, it only allows expressions. This means if you pass a sub-query as a parameter to something like "cast" for example, you will get a NullPointerException. In other cases, typically the sub-query is missed out of the resulting SQL. This is easily remedied by changing the first line of the definition of functionCall within hql-sql.g from:
> functionCall
> : #(METHOD_CALL {inFunctionCall=true;} pathAsIdent ( #(EXPR_LIST (expr)* ) )? )
> to:
> functionCall
> : #(METHOD_CALL {inFunctionCall=true;} pathAsIdent ( #(EXPR_LIST (exprOrSubquery)* ) )? )
> This modification has been tested against all the existing UnitTests in Hibernate 3.1.2 and does not cause any problems.
> I've included a patch for this.
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