[Marty]

Hi everybody. I want to know if someone can help me with this problem:
I am trying to map in hibernate, and when I try to execute mi application it returns me an error in a hbm.xml file.
I check hibernate in action, links, and so on but I can´t resolve this.

Caused by: org.hibernate.MappingException: Repeated column in mapping for entity: ar.com.lmi.pojos.Empresacolumn: Emp_Cod (should be mapped with insert="false" update="false")

Code:

the 2 tables that I try to map are:

CREATE TABLE AREA (
        Area_Cod             int NOT NULL,
        Area_Nivel           int NOT NULL,
        Area_Desc            varchar(50) NULL,
        Emp_Cod              int NOT NULL
 )
go
 ALTER TABLE AREA
        ADD PRIMARY KEY (Area_Cod, Area_Nivel, Emp_Cod)
go
ALTER TABLE AREA
        ADD FOREIGN KEY (Emp_Cod)
                              REFERENCES EMPRESA
go
 CREATE TABLE EMPRESA (
        Emp_Cod              int NOT NULL,
        Emp_Desc             varchar(30) NULL,
        Emp_CUIT             varchar(13) NULL,
        Emp_Calle            varchar(30) NULL,
        Emp_Nro              varchar(5) NULL,
        Emp_Piso             varchar(3) NULL,
        Emp_Depto            varchar(3) NULL,
        Emp_Localidad        varchar(30) NULL,
        Emp_CP               varchar(8) NULL,
        Emp_Telefono         varchar(11) NULL,
        Emp_ActDGI           varchar(8) NULL,
        Emp_Actividad        varchar(30) NULL,
        Emp_FirmAnsses       varchar(50) NULL,
        Pcia_Cod             int NULL
 )
go
 ALTER TABLE EMPRESA
        ADD PRIMARY KEY (Emp_Cod)

 
The xbm.xml are:
 
<hibernate-mapping package="ar.com.lmi.pojos">
 <class name="Area" table="AREA">
  <composite-id name="areaId" class="AreaId">
   <key-property name="area_Cod" column="Area_Cod"/>
   <key-property name="area_Nivel" column="Area_Nivel"/>
   <key-property name="emp_Cod" column="Emp_Cod"/>
  </composite-id>
  <property name="area_Desc" column="Area_Desc" type="string" not-null="false"/>
  <many-to-one name="emp_Cod" class="Empresa" column="Emp_Cod" update="false" insert="false"/>
 </class>
</hibernate-mapping>
 
<hibernate-mapping package="ar.com.lmi.pojos">
 <class name="Empresa" table="EMPRESA">
  <id name="emp_Cod" column="Emp_Cod" type="int">
   <generator class="identity"/>
  </id>
  <property name="emp_Desc" column="Emp_Desc" type="string" not-null="false"/>
  <property name="emp_CUIT" column="Emp_CUIT" type="string" not-null="false"/>
  <property name="emp_Calle" column="Emp_Calle" type="string" not-null="false"/>
  <property name="emp_Nro" column="Emp_Nro" type="string" not-null="false"/>
  <property name="emp_Piso" column="Emp_Piso" type="string" not-null="false"/>
  <property name="emp_Depto" column="Emp_Depto" type="string" not-null="false"/>
  <property name="emp_Localidad" column="Emp_Localidad" type="string" not-null="false"/>
  <property name="emp_CP" column="Emp_CP" type="string" not-null="false"/>
  <property name="emp_Telefono" column="Emp_Telefono" type="string" not-null="false"/>
  <property name="emp_ActDGI" column="Emp_Cod" type="string" not-null="false"/>
  <property name="emp_Actividad" column="Emp_Actividad" type="string" not-null="false"/>
  <property name="emp_FirmAnsses" column="Emp_FirmAnsses" type="string" not-null="false"/>
  <property name="pcia_Cod" column="Pcia_Cod" type="int" not-null="false"/>
  <set name="areas" table="AREA" inverse="true" cascade="all-delete-orphan">
   <key column="Emp_Cod"/>
         <one-to-many class="Area"/>
        </set>
 </class>
</hibernate-mapping>
 
pojos:
 
public class Area implements Serializable {
 private String area_Desc;
  
 /**
  * Constructor
  */
 public Area() {}
 
//Setters y getters
 
}
 
public class AreaId implements Serializable {
 private Integer area_Cod;
 private Integer area_Nivel;
 private Empresa emp_Cod;
 
 /**
  * Constructor
  */
 public AreaId(Integer area_Cod, Integer area_Nivel, Empresa emp_Cod) {
  this.area_Cod = area_Cod;
  this.area_Nivel = area_Nivel;
  this.emp_Cod = emp_Cod;
  
 }
 
//Setters y getters
} 
 
public class Empresa implements Serializable {
 private Integer emp_Cod;
 private String emp_Desc;
 private String emp_CUIT;
 private String emp_Calle;
 private String emp_Nro;
 private String emp_Piso;
 private String emp_Depto;
 private String emp_Localidad;
 private String emp_CP;
 private String emp_Telefono;
 private String emp_ActDGI;
 private String emp_Actividad;
 private String emp_FirmAnsses;
 private Integer pcia_Cod;
 private Set areas = new HashSet();


 /**
  * Constructor
  */
 public Empresa() {}
 
//Setters y getters
}