CODEWITHSUNDEEP
javahibernate
Jose Hdez
Jose Hdez

Reputation: 2347

java.lang.ClassCastException: org.hibernate.type.StringType cannot be cast to org.hibernate.type.VersionType

I am developing a database connector in order to retrieve data from a Oracle database. I have used the Hibernate tool included as a plug-in in Eclipse for the generation of the Hibernate mapping files because I have a lot of classes and tables to map. However, when I run the application, I have just get the following Exception:

java.lang.ClassCastException: org.hibernate.type.StringType cannot be cast to org.hibernate.type.VersionType
    at org.hibernate.tuple.PropertyFactory.buildVersionProperty(PropertyFactory.java:107)
    at org.hibernate.tuple.entity.EntityMetamodel.<init>(EntityMetamodel.java:181)
    at org.hibernate.persister.entity.AbstractEntityPersister.<init>(AbstractEntityPersister.java:485)
    at org.hibernate.persister.entity.SingleTableEntityPersister.<init>(SingleTableEntityPersister.java:133)
    at org.hibernate.persister.PersisterFactory.createClassPersister(PersisterFactory.java:84)
    at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:286)
    at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1845)
    at eu.cartif.dwhconn.database.DBManager.checkDWHStatus(DBManager.java:57)
    at eu.cartif.dwhconn.database.DBManager.main(DBManager.java:24)

I think the problem could be the type of the property of the hbm file: 

<hibernate-mapping>
<class name="eu.cartif.dwhconn.database.Ifcactorrole" table="IFCACTORROLE">
    <id name="role" type="string">
        <column name="ROLE" length="50" />
        <generator class="assigned" />
    </id>
    <property name="userdefinedrole" type="string">
        <column name="USERDEFINEDROLE" />
    </property>
    <property name="description" type="string">
        <column name="DESCRIPTION" length="3000" />
    </property>
    <set name="ifcpersons" table="IFCPERSON" inverse="true" lazy="true" fetch="select">
        <key>
            <column name="ROLES" length="50" />
        </key>
        <one-to-many class="eu.cartif.dwhconn.database.Ifcperson" />
    </set>
    <set name="ifcpersonandorganizations" table="IFCPERSONANDORGANIZATION" inverse="true" lazy="true" fetch="select">
        <key>
            <column name="ROLES" length="50" />
        </key>
        <one-to-many class="eu.cartif.dwhconn.database.Ifcpersonandorganization" />
    </set>
</class>
</hibernate-mapping>

However, I am not sure about it and I would not like to change all the types in all the hbms if that is not the solution. Anyone could help me, please.

Thank you very much in advance, May you have a nice day

Upvotes: 8

Views: 14045

Answers (5)

peterh
peterh

Reputation: 12586

I faced this problem with working on an ancient, hibernate3 software.

The solution is this: until hibernate3.5, StringType was a child class of NullableType.

In hibernate 3.6, this relation was ended.

Thus, StringType was convertable to a NullableType only until hibernate 3.5, from hibernate 3.6 it is not so any more.

The simplest solution is, now decades away from the future: switch back to hibernate 3.5.

Upvotes: 0

rombow
rombow

Reputation: 209

In my case, I generated entity from DB and some entities column name has "version". Generator for this names add "@Version" annotation, but this column type is String - for @Version annotation unacceptable

Upvotes: 17

Smaranjit
Smaranjit

Reputation: 779

This types of problem occurs

  • if there are column name as "version" of "VARCHAR" (string) type in any table, means in hibernate "property" becomes "version" and "type" becomes "string", like-

    in .hbm.xml file

    <version name="xyz" type="string">
    <column name="xyz" length="30" not-null="true" />
</version>

  • if there are any missing getter or setter method for a particular attribute.

  • if there are mismatch between .hbm.xml file and POJO class file.

Upvotes: 3

Jose Hdez
Jose Hdez

Reputation: 2347

I have checked several times all the mapping classes. Finally, the problem came from a mapping class which had not the proper type for an attribute... :( Thank you for your responses

Upvotes: 2

Linga
Linga

Reputation: 10545

Missing length field on

<property name="userdefinedrole" type="string">
    <column name="USERDEFINEDROLE" />
</property>

Upvotes: 0

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