[wanggang_ln]

Hi,
new trouble, when i follow the example like this
“http://myeclipseide.com/enterpriseworkbench/help/index.jsp?topic=/com.genuitec.myeclipse.doc/html/quickstarts/hibernate/index.html”

I found some problem occured,it can save data,but not read,why?
version 5.0.1 GA database sqlserver 2000

test file:

import java.util.List;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.Transaction;

import com.genuitec.hibernate.EchoMessage;
import com.genuitec.hibernate.HibernateSessionFactory;

public class Test {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub

EchoMessage message=new EchoMessage();
message.setMsg(“hello wanggang”);
try{
Session session=HibernateSessionFactory.getSession();
Transaction tx=session.beginTransaction();
session.save(message);
tx.commit();
System.out.println(“save successful.”);
EchoMessage em=(EchoMessage)session.get(EchoMessage.class,new Long(1));
//em.getMsg();
//em.getMsg();
//session.r
//session.saveOrUpdate(em);

Session session1 = HibernateSessionFactory.getSessionFactory().getCurrentSession();
session1.beginTransaction();
List result = session1.createQuery(“from EchoMessage”).list();
session1.getTransaction().commit();
for (int i = 0; i < result.size(); i++) {
EchoMessage theEvent = (EchoMessage) result.get(i);
System.out.println(“Event: ” + theEvent.getMsg());
}
System.out.println(“save fail.”);
}catch(HibernateException e){
System.out.println(“save fail.”);
}catch(Exception e){
System.out.println(e.getMessage());
System.out.println(“error occur”);
e.printStackTrace();
}
finally{
HibernateSessionFactory.closeSession();
}

}

}

What’s the problem? thanks!!!!!

If convenience,I email this project to you.my email address :wanggang_ln@163.com

[wanggang_ln]

And prompt messages:

java.lang.ClassCastException
at org.hibernate.type.IntegerType.set(IntegerType.java:41)
at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:83)
at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:65)
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:224)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1785)
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:2730)
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.proxyOrLoad(DefaultLoadEventListener.java:177)
at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:862)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:799)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:792)
at Test.main(Test.java:27)

[Haris Peco]

wanggang_ln ,

You have type mismatch.Try change :

EchoMessage em=(EchoMessage)session.get(EchoMessage.class,new Long(1));

to

EchoMessage em=(EchoMessage)session.get(EchoMessage.class,new Integer(1));

or change id type in EchoMessage from Inetger to Long

Best
Peco

[wanggang_ln]

My problem has been resolved,Thank you a lot.
Thanks.

[Author]

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