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From Aaron Johnson <johnson.aar...@gmail.com>
Subject Re: <s:param @value> does not accept expressions?
Date Wed, 18 Jun 2014 13:46:55 GMT
http://docs.oracle.com/javaee/7/api/javax/el/ExpressionFactory.html
http://docs.oracle.com/javaee/7/api/javax/el/ValueExpression.html

The framework would also need to provide an ELResolver that knows where to
find the Struts action.


On Wed, Jun 18, 2014 at 3:38 AM, Christoph Nenning <
Christoph.Nenning@lex-com.net> wrote:

> This could make very simple usecases overly complicated.
>
> E.g. using just a textfield:
>
> <s:textfield name="myActionMember" />
>
>
> This is already OGNL. And OGNL is used for reading and writing.
>
> How would you do this with EL (especially the writing part) ?
>
>
>
> Regards,
> Christoph
>
>
>
>
> > That's the pattern I expect. One tag should expose what you need from
> > Struts to EL -- the rest of the Struts tags should just be pure EL
> enabled.
> >
> >
> > Cheers,
> > Paul
> >
> >
> > On Tue, Jun 17, 2014 at 10:06 AM, Christoph Nenning <
> > Christoph.Nenning@lex-com.net> wrote:
> >
> > > In my JSPs I have interactions with struts all the time so OGNL is
> > > important for me.
> > >
> > > A pattern I use quite often is to get objects via <s:set> (OGNL) and
> > > afterwards use them with EL/JSTL.
> > >
> > >
> > >
> > > Regards,
> > > Christoph
> > >
> > >
> > >
> > >
> > > > I believe my thoughts are similar. When I code, I explicitly try to
> be
> > > > "OGNL free" in my JSP. There's no reason for me to use OGNL unless I
> am
> > > > forced to via interaction with Struts. I do what I can do make sure
> my
> > > JSP
> > > > usage sticks with the EE standard.
> > > >
> > > >
> > > >
> > > >
> > > > Cheers,
> > > > Paul
> > > >
> > > >
> > > > On Tue, Jun 17, 2014 at 9:55 AM, Aaron Johnson
> > > <johnson.aaron5@gmail.com>
> > > > wrote:
> > > >
> > > > > EL now supports many functions of OGNL. Would it make sense just
> to
> > > replace
> > > > > OGNL with EL? There doesn't seem to be much of a community around
> > > updating
> > > > > OGNL. The newer versions of EL have improved support for usage
> outside
> > > of
> > > > > the JSP environment. Is it possible to use EL in the other
> templates
> > > > > (Velocity, Freemarker, etc)? It is very confusing to have to work
> with
> > > > > multiple expression contexts (ValueStack lookups and JSTL) when
> > > authoring
> > > > > JSPs.
> > > > >
> > > > >
> > > > > On Mon, Jun 16, 2014 at 11:12 AM, Paul Benedict
> <pbenedict@apache.org>
> > > > > wrote:
> > > > >
> > > > > > Maybe we should have two versions of the tags? One that accepts
> EL
> > > (and
> > > > > > never executes OGNL) and another one that does. Quite honestly,
> I
> > > have no
> > > > > > use for OGNL inside of JSP.
> > > > > >
> > > > > >
> > > > > > Cheers,
> > > > > > Paul
> > > > > >
> > > > > >
> > > > > > On Mon, Jun 16, 2014 at 11:05 AM, Paul Benedict
> > > <pbenedict@apache.org>
> > > > > > wrote:
> > > > > >
> > > > > > > That's disappointing that we're crippling the use of these
> tags. I
> > > just
> > > > > > > want to use EL for single evaluation. I don't need both
OGNL
> and
> > > EL in
> > > > > my
> > > > > > > tags -- just EL.
> > > > > > >
> > > > > > >
> > > > > > > Cheers,
> > > > > > > Paul
> > > > > > >
> > > > > > >
> > > > > > > On Mon, Jun 16, 2014 at 10:44 AM, Dave Newton
> > > <davelnewton@gmail.com>
> > > > > > > wrote:
> > > > > > >
> > > > > > >>
> > > > > > >>
> > > > > >
> > > > > http://struts.apache.org/release/2.2.x/docs/why-cant-i-use-jstl-
> > > > style-el-expressions-in-struts-tags.html
> > > > > > >>
> > > > > > >>
> > > > > > >> On Mon, Jun 16, 2014 at 11:26 AM, Paul Benedict
> > > <pbenedict@apache.org
> > > > > >
> > > > > > >> wrote:
> > > > > > >>
> > > > > > >> > Is this a bug? I cannot use an EL expression to
set the
> "value"
> > > > > > >> attribute.
> > > > > > >> > I don't understand why such a restriction exists.
Thoughts?
> > > > > > >> >
> > > > > > >> > Cheers,
> > > > > > >> > Paul
> > > > > > >> >
> > > > > > >>
> > > > > > >>
> > > > > > >>
> > > > > > >> --
> > > > > > >> e: davelnewton@gmail.com
> > > > > > >> m: 908-380-8699
> > > > > > >> s: davelnewton_skype
> > > > > > >> t: @dave_newton <https://twitter.com/dave_newton>
> > > > > > >> b: Bucky Bits <http://buckybits.blogspot.com/>
> > > > > > >> g: davelnewton <https://github.com/davelnewton>
> > > > > > >> so: Dave Newton <
> > > http://stackoverflow.com/users/438992/dave-newton>
> > > > > > >>
> > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > >
> > > This Email was scanned by Sophos Anti Virus
> > >
>
> This Email was scanned by Sophos Anti Virus
>

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