I need details about how bindings work

Question

Hi All,
I am having trouble figuring out when a binding ends. What I am doing is putting a reference to an object in the the request such as following.
    TheObject theObjectInstance= new TheObject();
    request.setAttribute("theObjectInstanceName", theObjectInstance);
    <h:outputText value="#{theObjectInstanceName.someProperty}"/>This works fine, however, when I try to use this method for an input, it doesn't work.
    <h:inputText value="theObjectInstanceName.someProperty}"/>The problem seems to be the value is never put into the instance, when the user hit submit. Is there some sort of work-a-round?
Thanks,
Grae
Edited by: caalip2 on Jul 8, 2010 12:52 PM

Answer 1

caalip2 wrote:
Hi All,
This works fine, however, when I try to use this method for an input, it doesn't work.
<h:inputText value="theObjectInstanceName.someProperty}"/>
Not surprising. "theObjectInstanceName" is not a JSF backing bean name and thus cannot be bound to JSF form fields. It might work to fill information into the form field, but JSF cannot recreate the object upon posting back because it is not a managed bean.
The first case (displaying information) just happens to work because the expression language can read plain old java objects and their properties from the different scopes (request, session, etc.).