ClassCastException when loading boolean from SqlServer

brondsem · **Joined:** Tue May 25, 2004 9:56 am **Posts:** 19

Hibernate 3.1beta3
Hibernate Annotations 3.1beta5
SQLServerDialect

I have this code (getService() essentially delegates to a hibernate Session):

Code:

SupportListItem item = getService().getObjectById(id, SupportListItem.class);
item.setEnabled(false);  // AdminSupport.java:80, where the error happens
getService().saveOrUpdate(item);

which uses this class:

Code:

@Entity(access = AccessType.FIELD)
public class SupportListItem {
   @Id(generate = GeneratorType.AUTO)
   protected long id;
   protected boolean enabled = true;
   ...

   public boolean isEnabled() {
      return enabled;
   }

   public void setEnabled(boolean enabled) {
      this.enabled = enabled;
   }
   ...
}

and I get this exception:

Code:

Caused by: java.lang.ClassCastException: java.lang.Integer
   at org.hibernate.type.LongType.set(LongType.java:42)
   at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:63)
   at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:45)
   at org.hibernate.loader.Loader.bindPositionalParameters(Loader.java:1514)
   at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1576)
   at org.hibernate.loader.Loader.doQuery(Loader.java:661)
   at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:223)
   at org.hibernate.loader.Loader.loadEntity(Loader.java:1782)
   at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:47)
   at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:41)
   at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:2712)
   at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:365)
   at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:346)
   at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:123)
   at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:82)
   at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:781)
   at org.hibernate.impl.SessionImpl.immediateLoad(SessionImpl.java:743)
   at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:62)
   at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:98)
   at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:133)
   at edu.cornerstone.portal.portlet.forms.model.SupportListItem$$EnhancerByCGLIB$$4e828907.setEnabled(<generated>)
   at edu.cornerstone.portal.portlet.forms.bean.AdminSupport.doDelete(AdminSupport.java:80)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:585)
   at com.sun.el.parser.AstValue.invoke(AstValue.java:130)
   at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:274)
   at com.sun.facelets.el.TagMethodExpression.invoke(TagMethodExpression.java:68)
   at com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:69)
   ... 52 more

Is this a bug?

d · **Joined:** Mon Jul 04, 2005 5:19 pm **Posts:** 720

your getting CCE from item.setEnabled(false); ?

somewhere you are handing H an Integer but it should be a Long.

Jason Zhicheng Li · **Joined:** Tue Aug 16, 2005 11:06 pm **Posts:** 46

I do not think it has anything to do with
item.setEnabled(false);

I bet there is something incorrect in your mapping file. It is very likely you are mapping your id field as java.lang.Integer, but the id field in your class is long type.

Hope this is helpful.

brondsem · **Joined:** Tue May 25, 2004 9:56 am **Posts:** 19

I am using Hibernate Annotations so there is no explicit mapping for that field. Annotations automatically maps basic data types to columns. And in that is the problem... I think.[/quote]

d · **Joined:** Mon Jul 04, 2005 5:19 pm **Posts:** 720

what is going on in edu.cornerstone.portal.portlet.forms.bean.AdminSupport.doDelete ? again, somewhere there is an integer where there needs of be a long.

brondsem · **Joined:** Tue May 25, 2004 9:56 am **Posts:** 19

Please look at the stack trace more carefully. These lines indicate it is with the boolean field "enabled". AdminSupport.java line 80 is item.setEnabled(false);

Code:

   at edu.cornerstone.portal.portlet.forms.model.SupportListItem$$EnhancerByCGLIB$$4e828907.setEnabled(<generated>)
   at edu.cornerstone.portal.portlet.forms.bean.AdminSupport.doDelete(AdminSupport.java:80) 

pksiv · **Posted:** Fri Oct 14, 2005 2:54 pm

brondsem wrote:

Please look at the stack trace more carefully. These lines indicate it is with the boolean field "enabled". AdminSupport.java line 80 is item.setEnabled(false);

Code:

   at edu.cornerstone.portal.portlet.forms.model.SupportListItem$$EnhancerByCGLIB$$4e828907.setEnabled(<generated>)
   at edu.cornerstone.portal.portlet.forms.bean.AdminSupport.doDelete(AdminSupport.java:80) 

And these lines indicate that you're trying to use an Integer to populate a Long field.

Code:

Caused by: java.lang.ClassCastException: java.lang.Integer
   at org.hibernate.type.LongType.set(LongType.java:42) 

brondsem · **Joined:** Tue May 25, 2004 9:56 am **Posts:** 19

Ok, perhaps I was too hasty :-) I load my object by using an int "id" but the "id" field is a long. That's probably it.

Unfortunately there's a power outage on the campus this afternoon and I won't be able to test this until Monday since all the servers are going down.