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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> >>>>>>>> For additional commands, e-mail: dev-help_at_javaserverfaces.dev.java.net
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>>>
> >>>>>>> ---------------------------------------------------------------------
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> >>>>>>> For additional commands, e-mail: dev-help_at_javaserverfaces.dev.java.net
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>> --
> >>>>>> 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