Scientific Application Using XML and Web Tools

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Scientific Application Using XML and Web Tools
Margaret Sullivan, Research Scientist, JISAO
PMEL/FOCI

• Pacific Marine Environmental Laboratory

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Fisheries-Oceanography Coordinated Investigations

• Physical oceanography (PMEL) and fisheries
  (NOAA/AFSC) interdisciplinary studies

Gulf of Alaska, Aleutian Islands, Bering Sea
and North Pacific
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Mooring Plans Web Site
http//www.pmel.noaa.gov/foci/operations/mooring_p
lans/2004/mooring_plans_2004.html
This Presentation Web Site
http//www.pmel.noaa.gov/sullivan/webshop2004.htm
l
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XML Application 1

• Overview of Mooring Work
• Web Requirements, Goals
• Explore Tools, Define Solutions
• The Benefits
• The Bigger Picture
• Ending Information

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Mooring Sites Map
Overview of Mooring Work
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Mooring Work
Overview of Mooring Work
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A Year in Moorings
Overview of Mooring Work

• Design the years moorings and cruises based on
  ongoing projects and data requirements
• Create Excel tables for cruises/moorings
• Distribute spreadsheets to engineering
• Build moorings
• Transport moorings to ship(s)
• Deploy moorings

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Mooring Plans Summary Table in Excel
Overview of Mooring Work
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Tables for 3 Moorings in Excel
Overview of Mooring Work
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Types of Data Needed
Overview of Mooring Work

• Project and budget information
• Geographic - name, latitude, longitude, depth,
  current speed
• Instruments - itemized list with names and depths
• Instrument - tally per type, mooring, and cruise
• Past mooring information and design changes

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XML Application 2

• Overview of Mooring Work
• Web Requirements, Goals
• Explore Tools, Define Solutions
• The Benefits
• The Bigger Picture
• Ending Information

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Basic Web Requirements
Web Requirements, Goals

• Mooring Planning information to web
• Web tables visible to all interested parties
• Mooring information changes controlled

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Enhanced Requirements
Web Requirements, Goals

• System evolved from 1-person, Excel, paper,
  desktop
• Uniform information available to planners and
  engineers
• Data Changes are accountable and dated
• Web display/information similar to Excel format
• Main summary table, links to individual Mooring
  tables
• Data resource that is reusable and update-able
• Portable data subset on PDA for deploy/recovery

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XML Application 3

• Overview of Mooring Work
• Web Requirements, Goals
• Explore Tools, Define Solutions
• The Benefits
• The Bigger Picture
• Ending Information

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Flow of Logic
Explore Tools, Define Solutions
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Acronyms
Explore Tools, Define Solutions

• CGI Common Gateway Interface
• XML - eXtensible Markup Language (.xml)
• XSD - XML Schema Definition (.xsd)
• XSL - eXtensible Stylesheet Language (.xsl)
• XSLT - eXtensible Stylesheet Language
  Transformations

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Web Input and CGI
Explore Tools, Define Solutions

• Input
• XForms, HTML (xhtml)
• Perl forms
• Javascript
• Applet or servlet (Java)
• Common Gateway Interface Protocol
• Perl
• PHP
• Java, Programming languages?.

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XML Design
Explore Tools, Define Solutions

•   lt?xml version"1.0" ?gt
•   lt?xml-stylesheet version"1.0"?gt
• - ltMoorList xmlnsxsi"http//www.w3.org/2001/
• 
  XMLSchema-instance"
• 
  xsischemaLocation"my_test3.xsd"gt
• - ltMooringgt
•   ltMoorNamegt03GPP-32Blt/MoorNamegt
•   ltMoorTypegtSubsurfacelt/MoorTypegt
• ltLocationInfogt
• ltProjectgt
• ltInstrumentsgt
•   lt/Mooringgt
• - ltMooringgt
•   ltMoorNamegt03GB-4Alt/MoorNamegt
•   ltMoorTypegtSubsurfacelt/MoorTypegt
• ltLocationInfogt
• ltProjectgt
• ltInstrumentsgt
•   lt/Mooringgt

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A Sample of Schema and Stylesheet
Explore Tools, Define Solutions

• lt?xml version"1.0"?gt
• ltxsschema version"1.0xmlnsxs"http//www.w3.or
  g/2001/XMLSchema"gt
• ltxselement name"MoorList"gt
• ltxscomplexTypegt
• ltxssequencegt
• ltxselement ref"Mooring
  maxOccurs"unbounded"/gt
• lt/xssequencegt
• lt/xscomplexTypegt
• lt/xselementgt

• lt?xml version'1.0' encoding"ISO-8859-1"?gt
• ltxslstylesheet version"1.0" xmlnsxsl"http//ww
  w.w3.org/1999/XSL/Transform"gt
• ltxsltemplate match"/"gt
• lthtmlgtltbody bgcolor"FFFFFF"gt
• ltxslfor-each select"MoorList/Mooring"gt
• ltH1gtltcentergt
• ltxslvalue-of select "Project/Month"/gt160
• ltxslvalue-of select"Project/Year"/gt160-
  160
• lt/centergtlt/H1gt
• lth3gtltxslvalue-of select"MoorName"/gt160
• ltxslvalue-of select" MoorType "/gtlt/h3gt

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XSLT Choices
Explore Tools, Define Solutions

• Xalan/Xercer (Java)
• Perl CGI, XSLT, LibXML, LibXSLT
• PHP
• Javascript

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Perl Mods for XML
Explore Tools, Define Solutions

• CGI.pm
• Expat (C, foundation)
• XMLSimple
• XMLXSLT
• XMLLibXML
• XMLLibXSLT
• XMLParser

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For Consideration
Explore Tools, Define Solutions

• Get vs Post
• Why XML
• DTD vs Schema
• DOM and SAX
• Extensibility
• Portability

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XML Application 4

• Overview of Mooring Work
• Web Requirements, Goals
• Explore Tools, Define Solutions
• The Benefits
• The Bigger Picture
• Ending Information

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Web Site
The Benefits
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Excel
The Benefits
HTML/Web
?
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Other
The Benefits

• Security
• input control, validation
• regenerate content
• Access at sea to pertinent subset (PDA)
• XML as multi-purpose resource

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XML Application 5

• Overview of Mooring Work
• Web Requirements, Goals
• Explore Tools, Define Solutions
• The Benefits
• The Bigger Picture
• Ending Information

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The Bigger Picture
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XML Application 6

• Overview of Mooring Work
• Web Requirements, Goals
• Explore Tools, Define Solutions
• The Benefits
• The Bigger Picture
• Ending Information

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Technical References
Ending Information

• Books
• Perl XML, 2nd ed., E.T.Ray and J.McIntosh,
  OReilly
• XML for the World Wide Web, Visual Quickstart
  Guide, E.Castro, Peachpit Press
• XSLT (Mastering XML Transformations), D.Tidwell,
  OReilly
• Web Article
• XML DTDs vs XML Schema, Michael Jervis, Nov.26,
  2002, www.sitepoint.com/print (search on
  Jervis)
• Web Sites
• CPAN Perl modules http//www.cpan.org/modules/i
  ndex.html
• World Wide Web Consortium (W3C)
  http//www.w3.org/
• W3C tutorial http//www.w3schools.com/xml/defaul
  t.asp

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People
Ending Information

• FOCI
• B.Parker, C.Dewitt
• P.Stabeno
• C.Hadden
• R.Reed, N. Merati

• Engineering
• H.V.Miller

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Ending Information
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