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NPE while query.list on a Native SQL, using L2 cache

Description

I get an NPE when i try to execute a native query.
Below is the excerpt of the code that throws NPE:

String sqlQuery = "select emp_id, emp_first_name from employee_mt";
SQLQuery query = session.createSQLQuery(sqlQuery);
query.setCacheable(true).setCacheRegion("TEST_REGION");
query.addScalar("emp_id");
query.addScalar("emp_first_name");
List list = query.list();

query.list() throws the following NPE:
java.lang.NullPointerException
at org.hibernate.type.TypeFactory.disassemble(TypeFactory.java:451)
at org.hibernate.cache.StandardQueryCache.put(StandardQueryCache.java:83)
at org.hibernate.loader.Loader.putResultInQueryCache(Loader.java:2194)
at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2138)
at org.hibernate.loader.Loader.list(Loader.java:2096)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:289)
at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1695)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:152)
at poc.hibernate.caching.QueryCaching.fireNativeSql(QueryCaching.java:112)
at poc.hibernate.caching.QueryCaching.fireQuery(QueryCaching.java:38)
at poc.hibernate.caching.QueryCaching.main(QueryCaching.java:27)

I tried tracing through the Hibernate code code and saw that the types[] in the at the time of execution of types[i].disassemble( row[i], session, owner ) (TypeFactory.disassemble()) was holding both the types as null.
However before reaching that piece of code CustomLoader.autoDiscoverTypes(resultset) had already resolved the resultTypes to appropriate values.
Hope this helps.

Environment

Hibernate 3.2.5ga
Database Oracle 9i
Jdk - 1.4.2_13
EHCache 1.2.3 / OsCache 2.1 both

Status

Assignee

Brett Meyer

Reporter

Amit Kapoor

Fix versions

Labels

None

backPortable

None

Suitable for new contributors

None

Requires Release Note

None

Pull Request

None

backportDecision

None

Components

Affects versions

3.2.5

Priority

Major