[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5763) StackOverflowException on a HQL with too many "or".

[Björn Schmitz (JIRA)]

StackOverflowException on a HQL with too many "or".
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                 Key: HHH-5763
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5763
             Project: Hibernate Core
          Issue Type: Bug
          Components: query-hql
    Affects Versions: 3.5.5
         Environment: - Hibernate Core 3.5.5
- Hades 2.0.0
- MySQL
            Reporter: Björn Schmitz


Hi.

I generated with Hades following HQL statement:

"DELETE FROM Foo x WHERE x = ?1 OR x = ?2 OR x = ?n"

If i try to delete a list with over 18,000 elements, Hades generates a statement with 17,999 "OR".
This throws following Exception:

{{Caused by: java.lang.StackOverflowError
    at java.util.HashMap.get(HashMap.java:300)
    at org.hibernate.hql.ast.util.ASTPrinter.getTokenTypeName(ASTPrinter.java:139)
    at org.hibernate.hql.ast.HqlSqlWalker.buildTraceNodeName(HqlSqlWalker.java:191)
    at org.hibernate.hql.ast.HqlSqlWalker.traceIn(HqlSqlWalker.java:186)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1811)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1859)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1859)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1859)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1859)
    at org.hibernate.hql.antlr.HqlSqlBaseWalker.logicalExpr(HqlSqlBaseWalker.java:1859)
[...]}}

I've posted this bug in the bugtracker of Hades, too. But it seems to be a hibernate bug.
http://redmine.synyx.org/issues/414

Regards
Björn

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