[telcordia]

I am getting the following classcast exception and details
I think the problem is below (is it true)

<id name=”userInformation” column=”USERID” type=”string”>
<generator class=”assigned”/>
</id>
eclipse and myeclipse are recent downloads 3.1.0SDk and 4.0.0GA respectively

Exception in thread “main” java.lang.ClassCastException: com.afterdoc.hib.UserInformation
at org.hibernate.type.StringType.set(StringType.java:24)
at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:62)
at org.hibernate.type.NullableType.nullSafeSet(NullableType.java:44)
at org.hibernate.persister.entity.BasicEntityPersister.getDatabaseSnapshot(BasicEntityPersister.java:866)
at org.hibernate.engine.PersistenceContext.getDatabaseSnapshot(PersistenceContext.java:302)
at org.hibernate.engine.ForeignKeys.isTransient(ForeignKeys.java:189)
at org.hibernate.event.def.AbstractSaveEventListener.getEntityState(AbstractSaveEventListener.java:409)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:82)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:468)
at org.hibernate.engine.Cascades$5.cascade(Cascades.java:154)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:771)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascadeCollection(Cascades.java:895)
at org.hibernate.engine.Cascades.cascadeAssociation(Cascades.java:792)
at org.hibernate.engine.Cascades.cascade(Cascades.java:720)
at org.hibernate.engine.Cascades.cascade(Cascades.java:847)
at org.hibernate.event.def.AbstractSaveEventListener.cascadeAfterSave(AbstractSaveEventListener.java:363)
at org.hibernate.event.def.AbstractSaveEventListener.performSaveOrReplicate(AbstractSaveEventListener.java:265)
at org.hibernate.event.def.AbstractSaveEventListener.performSave(AbstractSaveEventListener.java:160)
at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:108)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:184)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:173)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.performSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:96)
at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:69)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:468)
at org.hibernate.impl.SessionImpl.saveOrUpdate(SessionImpl.java:463)
at com.hib.HibernateTest.main(HibernateTest.java:47)
##############################################################

Below are the cfg xmls for the two tables
<?xml version=”1.0″ encoding=’UTF-8′?>
<!DOCTYPE hibernate-mapping PUBLIC
“-//Hibernate/Hibernate Mapping DTD 3.0//EN”
“http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd&#8221; >

<!– DO NOT EDIT: This is a generated file that is synchronized –>
<!– by MyEclipse Hibernate tool integration. –>
<!– Created Wed Oct 05 21:12:16 EDT 2005 –>
<hibernate-mapping package=”com.hib”>

<class name=”UserFavorites” table=”user_favorites”>
<id name=”userInformation” column=”USERID” type=”string”>
<generator class=”assigned”/>
</id>

<property name=”favId” column=”FAV_ID” type=”string” />
<property name=”favRemarks” column=”FAV_REMARKS” type=”string” />
</class>

</hibernate-mapping>

<?xml version=”1.0″ encoding=’UTF-8′?>
<!DOCTYPE hibernate-mapping PUBLIC
“-//Hibernate/Hibernate Mapping DTD 3.0//EN”
“http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd&#8221; >

<!– DO NOT EDIT: This is a generated file that is synchronized –>
<!– by MyEclipse Hibernate tool integration. –>
<!– Created Wed Oct 05 21:11:09 EDT 2005 –>
<hibernate-mapping package=”com.hib”>

<class name=”UserInformation” table=”user_information”>
<id name=”userid” column=”USERID” type=”string”>
<generator class=”assigned”/>
</id>

<property name=”password” column=”PASSWORD” type=”string” />
<property name=”username” column=”USERNAME” type=”string” />
<property name=”state” column=”STATE” type=”string” />
<property name=”authLevel” column=”AUTH_LEVEL” type=”string” />
<property name=”comments” column=”COMMENTS” type=”string” />

<set name=”userFavoritesSet” lazy=”true” inverse=”true” cascade=”save-update”>
<key column=”USERID”/>
<one-to-many class=”UserFavorites” />
</set>
</class>

</hibernate-mapping>

###################################################################
tables in mysql:

`user_favorites` (
`USERID` varchar(25) NOT NULL,
`FAV_ID` varchar(25) default NULL,
`FAV_REMARKS` varchar(5000) default NULL,
PRIMARY KEY (`USERID`),
CONSTRAINT `FK1` FOREIGN KEY (`USERID`) REFERENCES `user_information` (`USERID`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

`user_information` (
`USERID` varchar(25) NOT NULL,
`PASSWORD` varchar(10) default NULL,
`USERNAME` varchar(50) default NULL,
`STATE` varchar(20) default NULL,
`AUTH_LEVEL` varchar(20) default NULL,
`COMMENTS` varchar(2000) default NULL,
PRIMARY KEY (`USERID`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

[Riyad Kalla]

Were these files all generated by MyEclipse from your DB?

[telcordia]

Yes all these files are generated by myeclipse from DB Explorer
right click on table name and generate hibernate cfg xml file

I changed the below lines
<class name=”UserFavorites” table=”user_favorites”>
<id name=”userInformation” column=”USERID” type=”string”>
<generator class=”assigned”/>
</id>

to

<class name=”UserFavorites” table=”user_favorites”>
<id name=”USERID” column=”USERID” type=”string”>
<generator class=”assigned”/>
</id>
and added property for userid

then it worked.
But I would like to know is it bug in myeclipse or am I doing anything wrong.

[Riyad Kalla]

It is a generation bug, for some reason it picked up the UserInformation field.

[Author]

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