Just tested<input value=" " />
and saw this is not readOnly...
On Jan 10, 2008 4:22 PM, Matthias Wessendorf <matzew_at_apache.org> wrote:
> Ryan/Jacob.
>
> is this in the EL-Spec ?
> that something like
> <input value="" /> returns a readOnly:true ValueExpression?
>
> Thx,
> Matthias
>
>
> On Jan 7, 2008 11:00 AM, Jacob Hookom <jacob_at_hookom.net> wrote:
> > Yeah... the work I did on the Apache EL was pre-spec completion and
> > there's since been other patches submitted through Tomcat by the
> > IBM/Geronimo folks.
> >
> >
> > Matthias Wessendorf wrote:
> > > Nope, just that the JSF 1.1 EL was (in MyFaces ;-) ) returning null as well.
> > >
> > > -M
> > >
> > > On Jan 7, 2008 7:31 PM, Ryan Lubke <Ryan.Lubke_at_sun.com> wrote:
> > >
> > >> Matthias Wessendorf wrote:
> > >>
> > >>> 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.
> > >>>
> > >>>
> > >> I think it's a bug in Tomcat's EL implementation.
> > >>
> > >> See what I've quoted previously. Can you find something in the spec to
> > >> support
> > >> your thoughts about the Tomcat behavior being correct?
> > >>
> > >>
> > >>
> > >>
> > >>> -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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> > >>>>>>>>
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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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> > >>>
> > >>>
> > >>>
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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
>
--
Matthias Wessendorf
further stuff:
blog: http://matthiaswessendorf.wordpress.com/
sessions: http://www.slideshare.net/mwessendorf
mail: matzew-at-apache-dot-org