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From "Michał 'Gandalf' Stawicki" <stawi...@gmail.com>
Subject Re: Instantiate a backing bean from other
Date Thu, 26 Jul 2007 14:40:15 GMT
Use spring, forget about faces managed-beans ;)

On 26/07/07, Simon Lessard <simon.lessard.3@gmail.com> wrote:
> Hello,
>
> It depends on the use case:
>
> 1. If the bean needing the information for the other is request scoped, the
> info is always needed and is unlikely to change over the request lifecycle,
> using a managed-property to inject the value directly is most likely the
> best way.
> 2. If the required value change over the request lifecycle or the bean is
> more persistent than request and the requested value change over time, then
> use a managed-property to inject the other bean itself.
> 3. Use the VariableResolver, it's more efficient than ValueBinding.
>
>
> Regards,
>
> ~ Simon
>
>
> On 7/26/07, Fabio Stracuzzi <fabiostracuzzi@gmail.com> wrote:
> >
> > FacesContext currentFacesContextInstance =
> FacesContext.getCurrentInstance();
> > You can test this code:
> >
> > ValueBinding valueBinding =
> currentFacesContextInstance.getApplication().createValueBinding("#{"
> + managedBeanName + "}");
> >
> > return valueBinding.getValue(currentFacesContextInstance);
> >
> > If Your managedBean has Session scope (or Application Scope), the returned
> bean is same istance, otherwise the method will create a new instance.
> >
> > Best regarde
> > Fabio
> >
> >
> > 2007/7/26, Angel Miralles Arevalo <anmiralles@yahoo.es>:
> >
> > >
> > >
> > >
> > > It isn't necesary managed bean in session scope, for example:
> > >
> > >
> > >
> > > AuthorizationMembersGroupBean menGroup = (AuthorizationMembersGroupBean)
> getApplication().createValueBinding("#{requestScope.authorizationMembersGroupBean}"
> ).getValue(facesContext);
> > >
> > >
> > >
> > >
> > >
> > >
> getApplication().createValueBinding("#{requestScope.authorizationMembersGroupBean}").setValue(facesContext,menGroup);
> > >
> > >
> > > What you need to know is than you obtain the managed bean, alter it and
> you have to update it in facesContext...the second line...
> > >
> > > ----- Mensaje original ----
> > > De: daniel ccss < danielccss2@gmail.com>
> > > Para: MyFaces Discussion <users@myfaces.apache.org>
> > > Enviado: jueves, 26 de julio, 2007 15:56:25
> > > Asunto: Instantiate a backing bean from other
> > >
> > >
> > > Is there a way to use a BackingBean from another BackingBean o another
> class, the scope of the backing bean is session.
> > >
> > > For example I need to call the get method of a variable of a BackingBean
> on another Backing Bean
> > >
> > > It is possible or I´m to crazy?
> > >
> > >
> > > ________________________________
>
> > > Sé un Mejor Amante del Cine
> > > ¿Quieres saber cómo? ¡Deja que otras personas te ayuden! .
> > >
> >
> >
> >
> > --
> > Ciao ciao
> > Fabio
>
>


-- 
Michał Stawicki

stawicki@gmail.com
http://stawicki.jasliska.pl
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