On Thu, 21 Jun 2001, Anthony Mills wrote:
> So, does this mean that the whole stream is read in, and then processed, or
> does it fire off SAX events as it reads in the stream? I think this would
> be a big enough reason to use XSP.
>
> Another question I have is in regards to uncaught exceptions. Is there an
> equivelent to <%@ page errorPage="error.html" %>. This is an extremely nice
> feature of JSP. It allows you to taylor your error page to the application,
> and you can run tags/methods in here to do clean up.
Every <map:pipeline> element offers you to have a <map:handle-error>
element inside of it. An uncaught exeption is transformed into a xml
format which can be tailored using a <map:transformer> to your needs.
Have a look at the sitemap.xmap that comes with C2.
Giacomo
>
> Thanks for the info,
>
> Anthony Mills
>
>
> ----- Original Message -----
> From: "Berin Loritsch" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, June 21, 2001 10:05 AM
> Subject: Re: JSP v. XSP (was Re: performance inquiry)
>
>
> > Anthony Mills wrote:
> > >
> > > I am not sure I see why XSP is nessisary for a content management
> system. I
> > > actually am desiging a content management system. I just decieded to
> use
> > > JSP for the bean support. This could be a wrong assumtion, but I see XSP
> as
> > > basicly just another scripting language. One could use python, php, or
> even
> > > perl. Why is the inital file being XML nesissary(BTW with Tomcat 4 the
> JSP
> > > is in XML format)? Maybe I should ask the question again in a differnet
> > > way. Why should one use XSP instead of another language? As long as
> XML is
> > > output does it really matter?
> >
> > The biggest difference is not that XSP is an XML based standard--but that
> the
> > communication mechanism is SAX based instead of Stream based. With JSP
> you
> > are required to send the results through an InputStream into Cocoon (or
> your
> > next layer) and perform modifications. When the JSP Generator in Cocoon
> > receives the stream, it promptly converts it to SAX events. This
> additional
> > overhead is avoided with XSP. XSP stores SAX events in the generated
> class,
> > and as the generate() method of the class is executed, it simply fires off
> > the SAX events. This is even quicker than the FileGenerator in that
> respect.
> >
> > > On a side note, I think Cocoon2 rocks! While I don't have the luxury of
> > > having a web development team, being able to seaparate my form from my
> > > content speeds up development 2 fold. Thanks, and keep up the good
> work.
> > >
> > > Thanks,
> > >
> > > Anthony Mills
> > >
> > > ----- Original Message -----
> > > From: "Frans Thamura" <[EMAIL PROTECTED]>
> > > To: <[EMAIL PROTECTED]>
> > > Sent: Thursday, June 21, 2001 1:24 AM
> > > Subject: Re: JSP v. XSP (was Re: performance inquiry)
> > >
> > > > Are you ever create a contentn management system using XML???
> > > >
> > > > You will see how great XSP is it? and how powerfull is a XML system.
> > > >
> > > > Frans Thamura
> > > >
> > > >
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: Anthony Mills <[EMAIL PROTECTED]>
> > > > To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
> > > > Date: Thursday, June 21, 2001 2:41 AM
> > > > Subject: JSP v. XSP (was Re: performance inquiry)
> > > >
> > > >
> > > > >I am not interested in time right now, atleast not ms. Why else
> would I
> > > > >want to use XSP? I used XSPs for awhile, but I prefer JSP for a few
> > > > reason,
> > > > >and right now one doesn't work. I will consider migrating, as most
> of my
> > > > >work is done in classes and XSLT. The first is:
> > > > ><jsp:useBean id="login" class="com.pyramid6.util.WebLogin"
> > > scope="session"
> > > > >/>
> > > > ><jsp:setProperty name="login" property="*" />
> > > > >
> > > > >This makes it real easy and nice to support sessions and read the
> request
> > > > >parameters.
> > > > >
> > > > >The second one, which doesn't work in beta 1 is: <jsp:directive.page
> > > > >errorPage="error.html" />
> > > > >
> > > > >This will catch exceptions real easy, and display a nice page for me.
> > > > >
> > > > >Now the only benifit I saw with XSP over JSP is with databases. I am
> not
> > > > >planning on using a database, so this point was lost on me.
> > > > >
> > > > >JSP is an industry standard right now. While I am sure XSP is
> gaining
> > > > >support, I am tring to stick to established standards. I am not real
> > > > >concerned with this, as my files are only about 20 lines long, and I
> will
> > > > >have about five of them.
> > > > >
> > > > >Thanks,
> > > > >
> > > > >Anthony Mills
> > > > >
> > > > >----- Original Message -----
> > > > >From: "Berin Loritsch" <[EMAIL PROTECTED]>
> > > > >To: <[EMAIL PROTECTED]>
> > > > >Sent: Wednesday, June 20, 2001 12:07 PM
> > > > >Subject: Re: performance inquiry
> > > > >
> > > > >
> > > > >> Anthony Mills wrote:
> > > > >> >
> > > > >> > Hello,
> > > > >> >
> > > > >> > I am developing a web site using JSP and Cocoon 2. I am running
> two
> > > > >tomcat
> > > > >> > web servers (3.2 and 4.0beta) on the same box at the same time.
> I
> > > have
> > > > >a
> > > > >> > Pentium III 450 with 192mb ram. I have noticed a few things.
> First,
> > > > it
> > > > >> > takes a little while to start, about 20 seconds. A page take
> about 5
> > > > >> > seconds to load the first time. After that, I am more limited by
> my
> > > > >> > connection (128kbps up) than I am by my web pages. The pages
> come
> > > back
> > > > >> > within seconds. I have JSPs being run through Cocoon 2; I assume
> > > that
> > > > >xsp
> > > > >> > would have similar speeds. Keep in mind this is not a scientific
> > > > >> > measurement, just what I "notice". Also, both web server are
> running
> > > > >about
> > > > >> > 34mb, with little interaction so far. One thing to consider when
> > > > >deploying
> > > > >> > your app. You can precompiled your jsp/xsp pages. This would
> speed
> > > > >things
> > > > >> > up considerably.
> > > > >>
> > > > >>
> > > > >> The first access is from the Sitemap compiling. It and the XSP
> pages
> > > can
> > > > >be
> > > > >> precompiled. Cocoon takes roughly 15-20 seconds to start up mainly
> > > > >because of
> > > > >> the number of managed resources it is controlling, and because of
> the
> > > > >compiled
> > > > >> sitemap. If you make Cocoon load on startup then most of the
> > > > >initialization
> > > > >> will have been done before the first request.
> > > > >>
> > > > >> 5 seconds is about right for an XSP page.
> > > > >>
> > > > >> Keep in mind that XSP is a better match than JSP for Cocoon--there
> is
> > > > less
> > > > >> translation and parsing that has to happen. By doing that you will
> > > shave
> > > > >off
> > > > >> a few milliseconds per request (10-50ms depending on size of
> > > > information).
> > > > >>
> > > > >> >
> > > > >> > Hope this helps,
> > > > >> >
> > > > >> > Anthony Mills
> > > > >> >
> > > > >> > ----- Original Message -----
> > > > >> > From: "java guru" <[EMAIL PROTECTED]>
> > > > >> > To: <[EMAIL PROTECTED]>
> > > > >> > Sent: Wednesday, June 20, 2001 8:33 AM
> > > > >> > Subject: performance inquiry
> > > > >> >
> > > > >> > > Hi.,
> > > > >> > > I am begining of developing a
> > > > >> > > standalone/networked/web application. But need to
> > > > >> > > decide what to use. C2 attracted be 'coz of many cool
> > > > >> > > features i might use in the future..
> > > > >> > >
> > > > >> > > But performance issues scares me.... I need advice..
> > > > >> > >
> > > > >> > > The application need to run standalone or networked
> > > > >> > > like web app...Considering this..
> > > > >> > >
> > > > >> > > 1. Is it better to do with servlet and jsp: In this
> > > > >> > > case i have problem with connection pooling and o/r
> > > > >> > > mapping to database
> > > > >> > >
> > > > >> > > 2. Is it better to use xml stuff with c2: In this i
> > > > >> > > fear for performance. I fear it might demand high end
> > > > >> > > configuration user systems compared to no1..
>
>
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