I have exactly the same problem like in topic mentoined bellow:
http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4029206#4029206
There is a list of objects which serves as restrictions for search condition.
If this list isn't empty, it works well.
But when the list is empty, this exception is thrown:
restrictions.add("action.region in (#{actionFilter.regions})");
Caused by: org.hibernate.hql.ast.QuerySyntaxException: unexpected end of subtree [select action from cz.Action action where action.region in ()] at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:31) at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:24) at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:59) at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:235) at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:160) at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:111) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:77) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:56) at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72) at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133) at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1113) at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79) at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:64) ... 200 more
It doesn't seem to me like a database error as it is mentoined in the link above.
thanks for clarification