2.1.2

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping>
<class name="com.vcs.china.poweracl.extension.bean.Trade" table="trade">
<jcs-cache usage="read-write"/>
<id name="trade_id" type="int">
<column name="trade_id" not-null="true"/>
<generator class="native"/>
</id>
<property name="trade_name">
<column name="trade_name" sql-type="varchar(100)"/>
</property>
<property name="trade_desc" type="string">
<column name="trade_desc"/>
</property>
</class>
</hibernate-mapping>

Trade t=(Trade)s.load(Trade.class,new String("4"));
System.out.println("get name: "+t.getTrade_name());

Hibernate: select trade0_.trade_id as trade_id0_, trade0_.trade_name as trade_name0_, trade0_.trade_desc as trade_desc0_ from trade trade0_ where trade0_.trade_id=?
java.lang.ClassCastException
at net.sf.hibernate.type.IntegerType.set(IntegerType.java:31)
at net.sf.hibernate.type.NullableType.nullSafeSet(NullableType.java:48)
at net.sf.hibernate.type.NullableType.nullSafeSet(NullableType.java:35)
at net.sf.hibernate.loader.Loader.bindPositionalParameters(Loader.java:674)
at net.sf.hibernate.loader.Loader.prepareQueryStatement(Loader.java:713)
at net.sf.hibernate.loader.Loader.doQuery(Loader.java:185)
at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:133)
at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:831)
at net.sf.hibernate.loader.Loader.loadEntity(Loader.java:851)
at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:57)
at net.sf.hibernate.loader.EntityLoader.load(EntityLoader.java:49)
at net.sf.hibernate.persister.EntityPersister.load(EntityPersister.java:419)
at net.sf.hibernate.impl.SessionImpl.doLoad(SessionImpl.java:2081)
at net.sf.hibernate.impl.SessionImpl.doLoadByClass(SessionImpl.java:1955)
at net.sf.hibernate.impl.SessionImpl.load(SessionImpl.java:1884)
at com.vcs.china.poweracl.extension.HiberTest.main(HiberTest.java:44)
Exception in thread "main"

MySQL 3.23.56 :

log4j.category.com.pow2=info, stdout, R


I can't load an object.But I can list them and use the method to get it!!!

I means that if I use the code:


I will get an ClassCastException.
But if I use the following code :


It can work well? Why ?? It is Hibernate's bug?

Sorry, its my mistake! the code

should be

Because the id in database is int!

: )

Same problem here.....

I tried the list thingy.... it works.

Also its nice to know a workaround i

_________________
You are not alone...

Hm....
Actually my identifier IS a string, so my load looks like

Konto t = new Konto();
t.setID("someidentifier");
session.save(t);
Konto k = session.load(Konto.class,t.getID);
...

But it should work fine as well ....

Will try to switch to an INT identifier if it helps....

The id in your database is a varchar or integer? what database do you use?

MySQL 3.2.3

id is a varchar(32), automatically created by hibernate mapping:
<id name="id" type="string">
<column name="ID" sql-type="char(32)" not-null="true"/>
<generator class="uuid.hex"></generator>
</id>

Your full code and full stack trace? Maybe I will answer you some hours later. now have a meeting. :-(