On Sat, 23 Nov 2002, Peter Lin wrote:
> Date: Sat, 23 Nov 2002 12:36:50 -0800 (PST)
> From: Peter Lin <[EMAIL PROTECTED]>
> Reply-To: Tomcat Developers List <[EMAIL PROTECTED]>
> To: Tomcat Developers List <[EMAIL PROTECTED]>
> Subject: RE: [Jasper2] framework for tag optimization
>
>
> So it would seam having a plugin framework wouldn't necessarily break
> conformance. On the otherhand, I would still like to see the expert
> group to seriously consider making plugin framework a standard feature
> of JSP compiler. Beyond performance, there are other good reasons to do
> so.
>
The best place for this feedback would be to the JSP 2.0 expert group
([EMAIL PROTECTED]).
Personally, I'd be surprised if such a suggestion were implemented, since
there is very little in the JSP spec (or most Java specs) about
implementation. In particular, there is no requirement that there even be
such a thing as a JSP page compiler -- an interpreted implementation would
be legal as well.
> For one, JSTL pages generate a lot of out.print("\r\n") when
> <c:choose> statemetns are used.
AFAIK, the <c:choose> and other tags don't actually generate *any* output
of their own -- the extra line breaks you are seeing are undoubtedly those
you've put in the source JSP page itself.
> Rather than have a tag handle the
> body and trim, I would prefer to see a plugin framework that gives
> application developers the ability to strip out extra control linefeeds
> or spaces. For example, some one may want to format their jsp code so it
> is easier to read, but often it breaks HTML formatting. There should be
> an easy way for page developers to write basic filters for jasper that
> allows a plugin to strip tabs and control linefeeds. Not only would this
> reduce the size of the generated page, but it should provide significant
> improvement for pages with lots and lots of tags.
>
Can't you do this with a standard javax.servlet.Filter, without needing to
integrate it into a compiler? A custom BodyTag of your own could
certainly do the job as well.
> peter lin
Craig
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