Hello guy!
We used postgreSqk, JBOSS 3.07, XDOCLET, ECLIPSE + LOMBOZ.
Next we introduce this diagram for explicating our problem
(A continuacion presentamos el siguiente diagrama para explicar nuestro
problema)
+----------+ +------------------------------------+
|ESTUDIANTE|1 *|INSCRIPCION |
+----------+-------+------------------------------------|
|ecodigo PK| |icodigo PK |
|enombre | |ecodigo PK,FK(references ESTUDIANTE)|
+----------+ |ccodigo PK,FK(references CURSO) |
+------------------------------------+
*|
|
|
|
|
1|
+----------+
|CURSO |
+----------|
|ccodigo PK|
|cnombre |
+----------+
ESTUDIANTE = STUDENT.
INSCRIPCION = INSCRIPTION.
CURSO = COURSE.
codigo = code.
How can you defining in a ENTITY BEAN CMP (INSCRIPCION) in a PK (primary
key) composed by three atribute, and two of these are FK (foreing key)?)
(�Como definir en un ENTITY BEAN CMP (INSCRIPCION) una PK (primary key)
compuesta por 3 atributos, de los cuales 2 son FK (foreing key)?)
We have developed the following code, but at the moment for making
deploy in Jboss, this throw one exception:
(Nostros hemos desarrollado el siguiente c�digo, pero en el momento de
realizar el montaje en jboss, este lanza la siguiente Exception)
"attribute "icodigoestudiante" duplicated
The code of the InscriptionEJB is:
package leufu;
import javax.ejb.EntityBean;
/**
* @ejb.bean name="Inscripcion"
* local-jndi-name="InscripcionBean"
* type="CMP"
* cmp-version="2.x"
* view-type="local"
* schema="Inscripcion"
*
* @ejb.persistence
* table-name="inscripcion"
*
* @ejb.finder
* query="SELECT OBJECT(a) FROM Inscripcion as a"
* signature="java.util.Collection findAll()"
*
* @jboss.create-table true
*
**/
public abstract class InscripcionBean implements EntityBean {
/**
*
* @ejb.create-method
*/
public InscripcionPK ejbCreate(String codigo, EstudianteLocal e, CursoLocal c) throws
javax.ejb.CreateException {
setIMatricula(codigo);
return new InscripcionPK(codigo,e,c);
}
/**
* The container invokes this method immediately after it calls ejbCreate.
*
*/
public void ejbPostCreate(String codigo, EstudianteLocal e, CursoLocal c) throws
javax.ejb.CreateException {
setICodigoEstudiante(e);
setICodigoCurso(c);
}
/**
*
* @ejb.persistent-field
* @ejb.pk-field
* @ejb.persistence
* @jboss.column-name imatricula
* @ejb.interface-method
*/
public abstract java.lang.String getIMatricula();
/**
* @ejb.interface-method
*/
public abstract void setIMatricula(java.lang.String IMatricula);
/**
*
*
[EMAIL PROTECTED]
[EMAIL PROTECTED]
[EMAIL PROTECTED] nce
[EMAIL PROTECTED] icodigoestudiante
[EMAIL PROTECTED]
*
/* para las relaciones
*
[EMAIL PROTECTED] name="estudiante-inscripcion"
*role-name="inscripcion-estudiante"
*target-ejb="Estudiante"
*target-role-name=" "
*target-multiple="yes"
*
[EMAIL PROTECTED] related-pk-field="eCodigo"
*fk-column="icodigoestudiante"
*fk-constraint="true"
**/
public abstract leufu.EstudianteLocal getICodigoEstudiante();
/**
*
* @ejb.interface-method
*/
public abstract void setICodigoEstudiante(leufu.EstudianteLocal ICodigoEstudiante);
/**
*
* @ejb.persistent-field
* @ejb.pk-field
* @ejb.persistence
* @jboss.colum-name icodigocurso
* @ejb.interface-method
* para las relaciones
* @ejb.relation name="curso-inscripcion"
* role-name="inscripcion-curso"
* target-ejb="Curso"
* target-role-name=" "
* target-multiple="yes"
*
[EMAIL PROTECTED] related-pk-field="cCodigo"
*fk-column="icodigocurso"
*fk-constraint="true"
*
*
*
*/
public abstract leufu.CursoLocal getICodigoCurso();
/**
*
* @ejb.interface-method
*/
public abstract void setICodigoCurso(leufu.CursoLocal ICodigoCurso);
}
Thanks...
Cristian Rossel Moraga
CEO Leufu Ingenieria y Negocios Ltda.
56-41-511655.
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