Re: How to set a component value to an EL Expression in Java?

[Paul Spencer]

Andrew,
This works.

Thank you.

Paul Spencer
Andrew Robinson wrote:

Oops, here is a better version:

FacesContext facesContext = FacesContext.getCurrentInstance();
CoreInputText childComponent = childComponent = (CoreInputText)
  facesContext.getApplication().createComponent(CoreInputText.COMPONENT_TYPE);
ValueExpression ve = facesContext.getApplication().getExpressionFactory()
 .createValueExpression(facesContext.getELContext(), "#{foo.bar}",
    Object.class);
childComponent.setValueExpression("value", ve);


On Fri, Sep 26, 2008 at 2:02 PM, Andrew Robinson
<[EMAIL PROTECTED]> wrote:

JSF 1.2 code:

CoreInputText childComponent;
 childComponent = (CoreInputText)
application.createComponent(CoreInputText.COMPONENT_TYPE);
FacesContext facesContext = FacesContext.getCurrentInstance();
ValueExpression ve = facesContext.getApplication().getExpressionFactory()
 .createValueExpression(facesContext.getELContext(), "#{foo.bar}",
Object.class);
childComponent.setValueExpression(ve);

-Andrew

On Fri, Sep 26, 2008 at 1:51 PM, Shane Petroff <[EMAIL PROTECTED]> wrote:

Paul Spencer wrote:

I need to dynamically add a child component inside a bean. I have access
to the component via a binding and have successfully added the child
component.  What I have not been able to do is set the value of the child
component to an EL Expresion so it is resolve by JSF 1.2.

The equivalent tag for the child component is:
 <tr:inputText value="#{foo.bar}"/>

So far I have:
  CoreInputText childComponent;
  childComponent = (CoreInputText)
application.createComponent(CoreInputText.COMPONENT_TYPE);
  // Set the value to an EL Expression
  childComponent.setValue("#{foo.bar}"); // Does not work

ValueBinding vb = application.createValueBinding(elExpression);
vb.setValue(context, value);

Will work, but iirc, this is deprecated, and there is an alternate for 1.2,
namely ValueExpression

Shane



--
Shane