Hi,
> If it's not a real expression then shouldn't it be read-only? You
> certainly can't call
> setValue() on it and expect it to work. So I think my original quote
> still holds true.
I wonder why tomcat handle's this as NULL.
In case of an object, the readonly is OK.
-Matthias
>
>
>
> > What is your take on that ?
> >
> > -Matthias
> >
> >
> >
> > On Dec 20, 2007 11:39 PM, Matthias Wessendorf <matzew_at_apache.org> wrote:
> >
> >> yah,
> >> tomorrow :-)
> >>
> >>
> >> On Dec 20, 2007 9:09 PM, Jacob Hookom <jacob_at_hookom.net> wrote:
> >>
> >>> I agree with Ryan, it should be read-only-- if you get that VE, can you
> >>> do a getClass() on it and let us know the type?
> >>>
> >>>
> >>> Ryan Lubke wrote:
> >>>
> >>>> Matthias Wessendorf wrote:
> >>>>
> >>>>> ok, this is only in Jetty;
> >>>>> just tested w/ a tomcat 6.x
> >>>>>
> >>>>> and <tr:inputText label="Label a)" value=""/>
> >>>>> renders as a regular inputText field;
> >>>>>
> >>>>>
> >>>> I think this may be a bug in Tomcat. The javadocs for ValueExpression
> >>>> states:
> >>>>
> >>>> <quote>
> >>>> In previous incarnations of this API, expressions could only be read.
> >>>> ValueExpression objects can now be
> >>>> used both to retrieve a value and to set a value. Expressions that can
> >>>> have a value set on them are referred to as
> >>>> l-value expressions. Those that cannot are referred to as r-value
> >>>> expressions. Not all r-value expressions can be
> >>>> used as l-value expressions (e.g. "${1+1}" or "${firstName}
> >>>> ${lastName}"). See the EL
> >>>> Speciļ¬cation for details. Expressions that cannot be used as l-values
> >>>> must always return true from
> >>>> isReadOnly().
> >>>> </quote>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>> -M
> >>>>>
> >>>>> On Dec 20, 2007 5:43 PM, Matthias Wessendorf <matzew_at_apache.org> wrote:
> >>>>>
> >>>>>
> >>>>>> Hi,
> >>>>>>
> >>>>>> I have a <tr:inputText value="">
> >>>>>> The underlying API, says this ValueExpression is readOnly.
> >>>>>>
> >>>>>> A simple JSPX makes that clear
> >>>>>> (I am on JETTY jetty-6.1.2rc2 and the RI )
> >>>>>> I think, they (re) use the glassfish shipped javax.el
> >>>>>>
> >>>>>>
> >>>>>> <?xml version='1.0' encoding='utf-8'?>
> >>>>>> <jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="1.2">
> >>>>>>
> >>>>>> <jsp:directive.page contentType="text/plain"/>
> >>>>>> <jsp:directive.page import="javax.servlet.jsp.*"/>
> >>>>>> <jsp:directive.page import="javax.el.*"/>
> >>>>>> <jsp:directive.page import="javax.faces.context.*"/>
> >>>>>> <jsp:scriptlet>
> >>>>>> JspApplicationContext jac =
> >>>>>> JspFactory.getDefaultFactory().getJspApplicationContext(application);
> >>>>>> ExpressionFactory ef = jac.getExpressionFactory();
> >>>>>> ValueExpression ve = ef.createValueExpression("", Object.class);
> >>>>>> out.println(ve.isLiteralText());
> >>>>>>
> >>>>>> out.println(ve.isReadOnly(FacesContext.getCurrentInstance().getELContext()));
> >>>>>>
> >>>>>>
> >>>>>> </jsp:scriptlet>
> >>>>>> </jsp:root>
> >>>>>>
> >>>>>> --
> >>>>>> Matthias Wessendorf
> >>>>>>
> >>>>>> further stuff:
> >>>>>> blog: http://matthiaswessendorf.wordpress.com/
> >>>>>> sessions: http://www.slideshare.net/mwessendorf
> >>>>>> mail: matzew-at-apache-dot-org
> >>>>>>
> >>>>>>
> >>>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>> ---------------------------------------------------------------------
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> >>>>
> >>>>
> >>>>
> >>>>
> >>> ---------------------------------------------------------------------
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> >>>
> >>>
> >>>
> >>
> >> --
> >> Matthias Wessendorf
> >>
> >> further stuff:
> >> blog: http://matthiaswessendorf.wordpress.com/
> >> sessions: http://www.slideshare.net/mwessendorf
> >> mail: matzew-at-apache-dot-org
> >>
> >>
> >
> >
> >
> >
>
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>
>
--
Matthias Wessendorf
further stuff:
blog: http://matthiaswessendorf.wordpress.com/
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mail: matzew-at-apache-dot-org