Proxy Question

flockom · **Joined:** Fri Feb 13, 2004 9:53 am **Posts:** 4

Hi,

I'm using Hibernate 2.0.1. I have an Ocorrencia class with a one-to-one association with ApresentacaoCondutor. ApresentacaoCondutor is a proxy and it has a foreign generator id.

When I load Ocorrencia, ApresentacaoCondutor is not retrieved because it's a proxy. But when I call Hibernate.initialize(ocorrencia.getApresentacaoCondutor()) hibernate tries to load ApresentacaoCondutor, but an ObjectNotFoundException is thrown.

I know that ApresentacaoCondutor with this id does not exist in database, but shoudn't hibernate return a null object or throwing an ObjectNotFoundException is correct?

Code:

     <class
        name="model.OcorrenciaVO"
        table="Ocorrencia"
        dynamic-update="false"
        dynamic-insert="false"
        proxy="model.OcorrenciaVO"
    >

        <id
            name="key"
            column="ID"
            type="long"
            length="30"
        >
            <generator class="sequence">
               <param name="sequence">ocorrencia_sequence</param>
         </generator>
        </id>
        
        <one-to-one
            name="apresentacaoCondutor"
            class="model.ApresentacaoCondutorVO"
            outer-join="false" 
            constrained="true" 
        />

Code:

    <class
        name="model.ApresentacaoCondutorVO"
        table="apresentacao_condutor"
        dynamic-update="false"
        dynamic-insert="false"
        proxy="model.ApresentacaoCondutorVO"
    >

         <id
            name="key"
            column="id"
            type="long"
            unsaved-value="null"
        >
            <generator class="foreign" >
               <param name="property">ocorrencia</param>   
            </generator>
        </id>

        <one-to-one
            name="ocorrencia"
            class="model.OcorrenciaVO"
            constrained="true"
            outer-join="false"
        />

Thanks!

flockom · **Joined:** Fri Feb 13, 2004 9:53 am **Posts:** 4

How is the influence of "constrained=false" or "constrained=true" in this situation?

Thanks..

emmanuel · **Posted:** Mon May 10, 2004 12:35 pm

Check this one
http://www.hibernate.org/162.html
constrained=true means the object exists