Composite Ids

[rengar]

I make mini example seams app (typical user-rol tables).

The source code was generated with hibernate-tools beta4
and was fixed some errors of generator.

usuario (usuario,password) --> Id (usuario)
rol(rol) --> Id (rol)
usuario_rol(usuario, rol) --> Composite id (usuario, rol)


Jboss throws this error when I go to "http://localhost:8080/seamapp/editUsuarioRol.jsf" :

10:29:27,361 ERROR [[/seamapp]] Cannot set value for expression '#{usuariorolEditor.instance.id}' to a new value of type java.lang.String
javax.faces.el.EvaluationException: Cannot set value for expression '#{usuariorolEditor.instance.id}' to a new value of type java.lang.String
 at org.apache.myfaces.el.ValueBindingImpl.setValue(ValueBindingImpl.java
:304)
.
.
Caused by: java.lang.IllegalArgumentException: argument type mismatch
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.apache.myfaces.el.PropertyResolverImpl.setProperty(PropertyResolv
erImpl.java:368)
 ... 33 more

The source code composite id :

// Generated 23-feb-2006 17:09:37 by Hibernate Tools 3.1.0.beta4

import javax.persistence.Column;
import javax.persistence.Embeddable;


/**
 * UsuarioRolId generated by hbm2java
 */
@Embeddable

public class UsuarioRolId implements java.io.Serializable {


 // Fields

 private String usuario;
 private String rol;


 // Constructors

 /** default constructor */
 public UsuarioRolId() {
 }


 /** full constructor */
 public UsuarioRolId(String usuario, String rol) {
 this.usuario = usuario;
 this.rol = rol;
 }



 // Property accessors
 @Column(name="usuario", unique=false, nullable=false, insertable=true, updatable=true, length=20)

 public String getUsuario() {
 return this.usuario;
 }

 public void setUsuario(String usuario) {
 this.usuario = usuario;
 }
 @Column(name="rol", unique=false, nullable=false, insertable=true, updatable=true, length=20)

 public String getRol() {
 return this.rol;
 }

 public void setRol(String rol) {
 this.rol = rol;
 }




 public boolean equals(Object other) {
 if ( (this == other ) ) return true;
 if ( (other == null ) ) return false;
 if ( !(other instanceof UsuarioRolId) ) return false;
 UsuarioRolId castOther = ( UsuarioRolId ) other;

 return ( (this.getUsuario()==castOther.getUsuario()) || ( this.getUsuario()!=null && castOther.getUsuario()!=null && this.getUsuario().equals(castOther.getUsuario()) ) )
 && ( (this.getRol()==castOther.getRol()) || ( this.getRol()!=null && castOther.getRol()!=null && this.getRol().equals(castOther.getRol()) ) );
 }

 public int hashCode() {
 int result = 17;

 result = 37 * result + ( getUsuario() == null ? 0 : this.getUsuario().hashCode() );
 result = 37 * result + ( getRol() == null ? 0 : this.getRol().hashCode() );
 return result;
 }

}

This error is throwing when i select one rol for one user.

I have in "editUsuarioRol.jsf" one inputText box for id.

How introduce "id" in this box if "id" is a object not a String ???

[gavin.king]

You probably need to add a JSF converter to the generated JSP.