one-to-one ClassCastException

Ricardo · **Posted:** Wed Jan 21, 2004 8:51 pm

Hi,

I have the following mappings:

Code:

<?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="org.scaf.model.FamiliaVO" table="familia">
        
        <id name="numeroInscricao" column="numero_inscricao" type="string">
            <generator class="assigned" />
        </id>

        <property name="endereco" column="endereco" type="string" />
        
    </class>
</hibernate-mapping>

and...

Code:

<?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="org.scaf.model.DesligamentoVO" table="desligamento">

        <id name="numeroInscricao" column="numero_inscricao" type="string">
            <generator class="assigned" />
        </id>

        <property name="dataDesligamento" column="data_desligamento" type="date" />

        <one-to-one name="familia" class="org.scaf.model.FamiliaVO" constrained="true" />
    </class>
</hibernate-mapping>

the DesligamentoVO has a one-to-one association with FamiliaVO, with String primary key...

when I load the DesligamentoVO, I have a ClassCastException..

in the class net.sf.hibernate.type.StringType,
the method

Code:

public void set(PreparedStatement st, Object value, int index) throws SQLException {
      st.setString(index, (String) value);
   }

receives a Integer paramenter "value", but my primary key is a string then a ClassCast occurs

any idea?

thanks

roofimon · **Posted:** Thu Jan 22, 2004 1:45 am

In my situation of using one-to-one, I always put property-ref in mapping file as well like this:
<one-to-one
name="offAddressHibernate"
class="com.netplus.pprincess.hibernate.OfficeAddressHibernate"
cascade="all"
outer-join="auto"
constrained="false"
property-ref="memberIdOff"
/>
and I think this might useful for you.
Cheers

Ricardo · **Posted:** Thu Jan 22, 2004 6:33 am

Ricardo · **Posted:** Thu Jan 22, 2004 6:34 am

Code:

 <one-to-one name="familia" class="org.scaf.model.FamiliaVO" constrained="false" property-ref="numeroInscricao" />

emmanuel · **Posted:** Thu Jan 22, 2004 8:26 am

Ricardo wrote:

any idea?

If your POJO should use String instead of int or Integer

Ricardo · **Posted:** Thu Jan 22, 2004 12:11 pm

emmanuel wrote:

Ricardo wrote:

any idea?

If your POJO should use String instead of int or Integer

in this case, the primary key must be a String....

I've tested the one-to-one with Integer pk and it works well...

is there a problem with the String primary key?

emmanuel · **Posted:** Thu Jan 22, 2004 1:26 pm

show your POJO

Ricardo · **Posted:** Thu Jan 22, 2004 4:53 pm

guys,

I did a stupid error.

I was loading the object with an Integer... sorry