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From peter lin <peter....@labs.gte.com>
Subject Re: incorporating EL support
Date Thu, 12 Sep 2002 16:35:59 GMT

the proposed final draft and early access implementation has been posted
on http://java.sun.com/products/jsp/

There's been a lot of activity on tomcat-dev dealing with JSP2.0. I have
no idea when it will be released. Perhaps one of the members in the
expert group can answer that question.

peter


Henri Yandell wrote:
> 
> Any idea on when we should expect JSP2.0 Peter?
> 
> Whether we all bother to EL things really depends on whether JSP2.0 is
> around the corner or not gonna happen til Spring 2004. Especially as we
> have to add in time for when we can expect JSP2.0 in servers.
> 
> Does Craig's code in anyway tie him to JSP 1.2? Or can you use
> ExpressionEvaluatorManager and its dependencies in JSP 1.1?
> 
> Hen
> 
> On Thu, 12 Sep 2002, peter lin wrote:
> 
> >
> >
> > You should know that JSP2.0 includes EL built in.  the early access
> > implementation of JSP2.0 uses JSTL's el.
> >
> > You may want to look at the draft spec to familiarize yourself with the
> > changes that will occur when JSP2.0 is released.
> >
> > peter lin
> >
> > Craig Longman wrote:
> > >
> > > hi there,
> > >
> > > i'm just starting out with jsp/taglibs, and have decided to focus on
> > > using the jstl as the basis for my efforts.  it seems to provide exactly
> > > what i needed, some basic, compatible tags to get started.
> > >
> > > it is clear, however, that i'm going to have to write my own tags to get
> > > any serious work done.
> > >
> > > my question is this,  i figure that if i'm going to standardize on the
> > > jstl, then it only makes sense to standardize on the EL stuff also, i
> > > prefer its style to the scriplet thingies, and its less typing.  but,
> > > i'm wondering what the preferred/recommended method is for doing this.
> > >
> > > i see in the src dist for the reference jstl that there are a couple of
> > > classes that look promising to use.  one is an interface
> > > (ExpressionEvaluator) and then an implementing class
> > > (ExpressionEvaluatorManager).  using it appears to be as simple as this
> > > (from tag/el/core/ForEachTag.java):
> > >
> > >   if( begin_ != null )
> > >   {
> > >     Object r = ExpressionEvaluatorManager.evaluate(
> > >                   "begin", begin_, Integer.class, this, pageContext );
> > >     if (r == null)
> > >     {
> > >       throw new NullAttributeException("forEach", "begin");
> > >     }
> > >     begin = ((Integer) r).intValue();
> > >     validateBegin();
> > >   }
> > >
> > > it is acceptable to utilize this class in this manner for custom tags?
> > > or is there a better/standard way.  i have been unable to find any docs
> > > that talk about using the standard EL in your own tags, but if anyone
> > > has any pointers, i would greatly appreciate it.
> > >
> > > thanks,
> > >
> > > --
> > >
> > >     CraigL->Thx();
> > >     Be Developer ID: 5852
> > >
> > >   ------------------------------------------------------------------------
> > >                        Name: signature.asc
> > >    signature.asc       Type: application/pgp-signature
> > >                 Description: This is a digitally signed message part
> >
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> >
> >
> 
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