Hi all.
When I want to load an object, this exception is thrown :

Line is :
role = (Role)session.get(Role.class, inForm.getUsername());

Exception is :

10:33:51,984 INFO [STDOUT] java.lang.ClassCastException
10:33:51,984 INFO [STDOUT] at net.sf.hibernate.type.StringType.toString(StringType.java:47)
10:33:51,984 INFO [STDOUT] at net.sf.hibernate.type.NullableType.nullSafeSet(NullableType.java:
46)
10:33:52,000 INFO [STDOUT] at net.sf.hibernate.type.NullableType.nullSafeSet(NullableType.java:
35)
10:33:52,000 INFO [STDOUT] at net.sf.hibernate.loader.Loader.bindPositionalParameters(Loader.ja
va:674)
10:33:52,000 INFO [STDOUT] at net.sf.hibernate.loader.Loader.prepareQueryStatement(Loader.java:
713)
10:33:52,000 INFO [STDOUT] at net.sf.hibernate.loader.Loader.doQuery(Loader.java:185)
10:33:52,000 INFO [STDOUT] at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollect
ions(Loader.java:133)
10:33:52,000 INFO [STDOUT] at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:836)
10:33:52,000 INFO [STDOUT] at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:856)
10:33:52,000 INFO [STDOUT] at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:59)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:51)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.persister.EntityPersister.load(EntityPersister.j
ava:419)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.impl.SessionImpl.doLoad(SessionImpl.java:2106)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.impl.SessionImpl.doLoadByClass(SessionImpl.java:
1980)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.impl.SessionImpl.internalLoadOneToOne(SessionImp
l.java:1934)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.type.OneToOneType.resolveIdentifier(OneToOneType
.java:71)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.type.EntityType.resolveIdentifier(EntityType.jav
a:232)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.impl.SessionImpl.initializeEntity(SessionImpl.ja
va:2194)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.loader.Loader.doQuery(Loader.java:240)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollect
ions(Loader.java:133)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:836)
10:33:52,016 INFO [STDOUT] at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:856)
10:33:52,047 INFO [STDOUT] at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:59)
10:33:52,047 INFO [STDOUT] at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:51)
10:33:52,047 INFO [STDOUT] at net.sf.hibernate.persister.EntityPersister.load(EntityPersister.j
ava:419)
10:33:52,047 INFO [STDOUT] at net.sf.hibernate.impl.SessionImpl.doLoad(SessionImpl.java:2106)
10:33:52,047 INFO [STDOUT] at net.sf.hibernate.impl.SessionImpl.doLoadByClass(SessionImpl.java:
1980)
10:33:52,047 INFO [STDOUT] at net.sf.hibernate.impl.SessionImpl.get(SessionImpl.java:1916)
...
...
...

What is solution of this problem?
Thanks!

The mapping xml (s) would help.
Having said that is the UserName the primary key of Role and a string?

Hi David,

I've seen the same exception before it ocurs when you have a property type set to something other than what the field actually is.

It looks like your mapping file shows one of the properties of Role as 'string' but it is actually something else.