Re: Instantiate a backing bean from other

[Thomas Lutz]

have a look at http://jsf-spring.sourceforge.net/

Thai Dang Vu wrote:

What do you mean about "Use spring, forget about faces managed-beans"? Do you 
have a way to use a Spring bean as a JSF managed bean (declare that bean in a xml file, 
not in faces-config.xml)?

-----Original Message-----

From: Michał 'Gandalf' Stawicki [mailto:[EMAIL PROTECTED] Sent: Thursday, July 26, 2007 10:40 AM

To: MyFaces Discussion
Subject: Re: Instantiate a backing bean from other

Use spring, forget about faces managed-beans ;)

On 26/07/07, Simon Lessard <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]>:

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 < [EMAIL PROTECTED]>
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?


________________________________

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--
Ciao ciao
Fabio