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moonlight
 Post subject: How to make a foreign key (one-to-one) as my only id?
PostPosted: Thu Sep 29, 2005 8:03 am 
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Joined: Mon Aug 29, 2005 9:46 am
Posts: 102
Hello everyone,

I have a class which has a association with others. Among this association, there's a one-to-one association that I wanna turn into a ID. I am getting a mapping exception, saying " Attribute "column" must be declared for element type "one-to-one"." even having the "column" declared. Please, help me find the error. My mapping document comes below:

Hibernate version: 3.0
Mapping documents:
Code:
  <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
         "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 
<hibernate-mapping>
    <class name="auge.bean.FichaTecnica" table="FICHATECNICA" >
       <id name="fichaTecnica" column="fichaTecnica" type="java.lang.STRING">
          <generator class="foreign">
              <param name="property">fichaTecnica</param>
          </generator>
       </id>
       <one-to-one name="fichaTecnica" column="fichaTecnica" class="auge.bean.Produto"
                    not-null="true" constrained="true" lazy="false"/>                                           
       
       
       <property name="molde" column="molde" type="java.lang.String" />
       <property name="data" column="data" type="java.util.Date" />       
       <property name="tamanhoPiloto" column="tamanhoPiloto" type="java.lang.String" />
       <property name="frenteModelo" column="frenteModelo" type="java.lang.String" />       
       <property name="costasModelo" column="costasModelo" type="java.lang.String" />             
       <property name="estilo" column="estilo" type="java.lang.String" />                           
       <property name="acabamento" column="acabamento" type="java.lang.String" />                                   
       <property name="observacao" column="observacao" type="java.lang.String" />                                         
       
       <many-to-one name="modelista" column="modelista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>       
                   
       <many-to-one name="pilotista" column="pilotista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>   
                                           
       <many-to-one name="estilista" column="estilista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>                       
                   
    </class>
</hibernate-mapping>
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moonlight
 Post subject:
PostPosted: Thu Sep 29, 2005 8:38 am 
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Joined: Mon Aug 29, 2005 9:46 am
Posts: 102
Got a little better. Now my mapping is like this:
Code:
  <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
         "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 
<hibernate-mapping>
    <class name="auge.bean.FichaTecnica" table="FICHATECNICA" >
       <id name="fichaTecnica" column="fichaTecnica" type="java.lang.String">
          <generator class="foreign">
              <param name="property">fichaTecnica</param>
          </generator>
       </id>
       <one-to-one name="fichaTecnica" class="auge.bean.Produto" lazy="false"/>                                           
       
       <property name="molde" column="molde" type="java.lang.String" />
       <property name="data" column="data" type="java.util.Date" />       
       <property name="tamanhoPiloto" column="tamanhoPiloto" type="java.lang.String" />
       <property name="frenteModelo" column="frenteModelo" type="java.lang.String" />       
       <property name="costasModelo" column="costasModelo" type="java.lang.String" />             
       <property name="estilo" column="estilo" type="java.lang.String" />                           
       <property name="acabamento" column="acabamento" type="java.lang.String" />                                   
       <property name="observacao" column="observacao" type="java.lang.String" />                                         
       
       <many-to-one name="modelista" column="modelista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>       
                   
       <many-to-one name="pilotista" column="pilotista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>   
                                           
       <many-to-one name="estilista" column="estilista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>                       
                   
    </class>
</hibernate-mapping>



Now I get the error:
Code:
2005-09-29 09:37:37,643 DEBUG hibernate.engine.Cascades  -> id unsaved-value strategy UNDEFINED
2005-09-29 09:37:37,644 DEBUG event.def.AbstractSaveEventListener  -> generated identifier: 0011, using strategy: org.hibernate.id.ForeignGenerator
2005-09-29 09:37:37,644 DEBUG event.def.AbstractSaveEventListener  -> saving [auge.bean.FichaTecnica#0011]
2005-09-29 09:37:37,646 ERROR hibernate.property.BasicPropertyAccessor  -> IllegalArgumentException in class: auge.bean.FichaTecnica, setter method of property: fichaTecnica
2005-09-29 09:37:37,646 ERROR hibernate.property.BasicPropertyAccessor  -> expected type: auge.bean.Produto, actual value: java.lang.String
2005-09-29 09:37:37,652 DEBUG hibernate.transaction.JDBCTransaction  -> rollback


My code is giving the value as expected ( auge.bean.Produto and not java.lang.String). So I suppose hibernate is having problems because of the id type specified.

Someone, please?
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moonlight
 Post subject:
PostPosted: Thu Sep 29, 2005 9:42 am 
Regular
Regular

Joined: Mon Aug 29, 2005 9:46 am
Posts: 102
mapping changed, problem changed:

Code:
  <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN"
         "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
 
<hibernate-mapping>
    <class name="auge.bean.FichaTecnica" table="FICHATECNICA" >
       <id name="fichaTecnica" column="fichaTecnica" type="java.lang.String">
          <generator class="assigned">
              <param name="property">fichaTecnica</param>
          </generator>
       </id>
       <one-to-one name="fichaTecnica" class="auge.bean.Produto" lazy="false"/>                                           
       
       <property name="molde" column="molde" type="java.lang.String" />
       <property name="data" column="data" type="java.util.Date" />       
       <property name="tamanhoPiloto" column="tamanhoPiloto" type="java.lang.String" />
       <property name="frenteModelo" column="frenteModelo" type="java.lang.String" />       
       <property name="costasModelo" column="costasModelo" type="java.lang.String" />             
       <property name="estilo" column="estilo" type="java.lang.String" />                           
       <property name="acabamento" column="acabamento" type="java.lang.String" />                                   
       <property name="observacao" column="observacao" type="java.lang.String" />                                         
       
       <many-to-one name="modelista" column="modelista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>       
                   
       <many-to-one name="pilotista" column="pilotista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>   
                                           
       <many-to-one name="estilista" column="estilista" class="auge.bean.Pessoa"
                    not-null="false" lazy="false"/>                       
                   
    </class>
</hibernate-mapping>



I changed it to assigned. Now i get no error, but the thing doesn't work. After calling "save", it loses itself. On the log I get:
Code:
2005-09-29 10:36:46,548 DEBUG event.def.AbstractFlushingEventListener  -> executing flush
2005-09-29 10:36:46,548 DEBUG event.def.AbstractFlushingEventListener  -> post flush
2005-09-29 10:36:46,549 DEBUG hibernate.jdbc.JDBCContext  -> before transaction completion
2005-09-29 10:36:46,549 DEBUG hibernate.impl.SessionImpl  -> before transaction completion
2005-09-29 10:36:46,552 DEBUG hibernate.transaction.JDBCTransaction  -> committed JDBC Connection
2005-09-29 10:36:46,553 DEBUG hibernate.jdbc.JDBCContext  -> after transaction completion
2005-09-29 10:36:46,553 DEBUG hibernate.impl.SessionImpl  -> after transaction completion
2005-09-29 10:36:46,555 DEBUG hibernate.impl.SessionImpl  -> closing session
2005-09-29 10:36:46,555 DEBUG hibernate.jdbc.ConnectionManager  -> closing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)]
2005-09-29 10:36:46,555 DEBUG hibernate.jdbc.JDBCContext  -> after transaction completion
2005-09-29 10:36:46,556 DEBUG hibernate.impl.SessionImpl  -> after transaction completion


All I need is to know the right way to do it. Someone please?
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