presentation: A Gentle Introduction to Cocoon.
image-directory: cocoon-images

Author: Warrell Harries

For: Wiley Interscience/SCS

Date: September 2007

Compelling reasons to be cheerful when faced with new Web Publishing
Challenges

slide: Why So?
hint-style: LittleText

img_leftThird: mother.jpg

subtitle: It's too New.

1999, Stefano Mazzocchi, MIT, Apache Board Member

href: http://cocoon.apache.org/2.1/userdocs/concepts/index.html

subtitle: It's strange.

Unix pipelines

subtitle: It's different.

XML++

subtitle: It's compulsive.

My eyesight is deteriorating

subtitle: It's weird, Euro trash

So was Lego, in the beginning

subtitle: They eat their own dog food over there

Mighty nutritious and delicious

img_rightThird: dummies.png

slide: Complexity demands Architecture
hint-style: LittleText

img_rightHalf: pyramid.jpg

subtitle: Pyramid of Contracts

Separate 4 major Concerns with 5 Comprehensible Contracts

subtitle: Mix 'em at your Peril

Functional, Declarative Pipelines enforce side-effect-less-ness

subtitle: KISS

Follow a piece of string

subtitle: Service Oriented

Web, EJB, Internal protocol and External proxy

img_fullWidth: cocoon.jpg

slide: XML at the top of the Stack
hint-style: LotsOfText

img_leftFifth: whiteheat.jpg

img_rightHalf: crunchy.jpg

sound: madeitma.mp3

subtitle: Impedance Mismatch

XML from the top down maintains consistency

subtitle: The Climate Changed

We aren't standing on OO land anymore - afloat on the monster mashup blogosphere

subtitle: Greater Agility Required

Let the framework do the heavy lifting

note: Ruby on Rails vs Grails vs Cocoon

sound: ruby.mp3

subtitle: A developer writes 10 lines of working code a day

subtitle: 10 lines of Java doing something arcane to the business DOM

code:
clientElement = ElementHelper.getElement( updatedRiskData.getRootElement(),
"//client" );
processDataElement.add( clientElement.detach() );
// clear modified flags
modifiedItems = processDataElement.selectNodes( "//*[@modified='true']" );
if ( ( modifiedItems != null ) && !modifiedItems.isEmpty() )
{
    Iterator itemIter = modifiedItems.iterator();
    while ( itemIter.hasNext() )
    {
// remove attribute
( (Element) itemIter.next() ).addAttribute( "modified", null );
    }
}

subtitle: A 10 line pipeline that invokes EJB services, builds a view of the results and re-uses a presentation resource

code:
<map:match pattern="logQuote">
   <map:generate type="jx" src="newclientpolicy.xml"/>
   <map:transform type="ejb">
      <map:parameter name="application" value="BarclaysHNW"/>
   </map:transform>
   <map:transform src="dayState.xsl"/>
   <map:transform type="xmldb"/>
   <map:call resource="dayViewRes"/>
</map:match>

subtitle: Mixing-up mental models

Uniformity of approach costs less in the long run

slide: Pipes
hint-style: LittleText

subtitle: Unix Pipes, Yahoo Pipes, Teqlo, Drain Pipes, Half-Pipes

code:
grep index.html access.log | awk ‘{print $2 }’ | sort | uniq | wc -l

img_leftFifth: pipes.gif

img_rightThird: teqlo.gif

subtitle: Tools to build hosted mashup applications

note: Cocoon patterns are merging into the mainstream. Pipes mashes up data feeds, Teqlo orchestrates the inputs and outputs of widgets

img_leftFifth: paloose.png

note: Paloose is a simplified (much simplified) version of Cocoon using PHP. There are relatively few ISPs who will support Java/Tomcat for web sites and this is the authors solution to that dilemma

img_leftThird: tube_map.gif

subtitle: XProc - An XML Pipeline Language
href: http://www.w3.org/TR/xproc/

subtitle: The Sitemap is a Plan of the pipelines

slide: Pipeline Detail

subtitle: The Pipelines that generate this presentation; dynamically or statically

Produces the Index of available presentations

code:
<map:match pattern="index.html">
   <map:generate type="directory" src="presentations"/>
      <map:transform src="stylesheets/dir-to-html.xsl">
         <map:parameter name="baseDir" value="presentations"/>
      </map:transform>
   <map:serialize type="html"/>
</map:match>

Produces the Raw ASCII data of a complete presentation

code:
<map:match pattern="presentations/**/txt/presentation.html">
   <map:read src="presentations/{1}.txt" mime-type="text/plain"/>
</map:match>

Produces the XML data of a complete presentation

code:
<map:match pattern="presentations/**/xml/presentation.html">
   <map:generate type="slop"
         src="presentations/{1}.txt">
      <map:parameter name="encoding" value="iso-8859-1"/>
      <map:parameter name="preserve-space" value="true"/>
   </map:generate>
   <map:transform src="stylesheets/filter-slop-output.xsl"/>
   <map:serialize type="xml"/>
</map:match>

Produces the XML data of a single slide

code:
<map:match pattern="presentations/**/xml/slide-*.html">
   <map:generate src="cocoon:/presentations/{1}/xml/presentation.html"/>
   <map:transform src="stylesheets/select-slide.xsl">
      <map:parameter name="slideId" value="{2}"/>
   </map:transform>
   <map:serialize type="xml"/>
</map:match>

Produces the Index (list of slides) of a presentation

code:
<map:match pattern="presentations/**/html/index.html">
   <map:generate src="cocoon:/presentations/{1}/xml/presentation.html"/>
      <map:transform src="stylesheets/html-index.xsl"/>
   <map:serialize type="html"/>
</map:match>

Produces a Single slide or full presentation in HTML

code:
<map:match pattern="presentations/**/html/*.html">
   <map:generate src="cocoon:/presentations/{1}/xml/{2}.html"/>
   <map:transform src="stylesheets/html-slides.xsl"/>
   <map:serialize type="html"/>
</map:match>

subtitle: Simple Line Oriented Parser

Yet Another Presentation Tool

subtitle: Stand on the shoulders of Giants and recurse

slide: CLI mode for generating static content
hint-style: LittleText

subtitle: cocoon cli -x query.xconf -n wiley

code:
<uris name="wiley" follow-links="true"
   confirm-extensions="false" src-prefix="wiley/"
      dest="build/dest/wiley/" type="append">
   <uri src="index.html"/>
</uris>

slide: Components
hint-style: LittleText

img_leftThird: components.jpg

subtitle: Generators

in the Beginning

subtitle: Transformers

there was the Word

subtitle: Serializers

and it was Good

img_fullWidth: pipeline.gif



slide: Next Steps

img_leftFifth: tube.jpg

Generate a static page for each book in collection

Develop workflow applications

Content Management System

note: Presentation wizard to automatically generate complicated flashy layouts with lots of gee-whiz transition effects. Just kidding.