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WikiD (Wiki/Data)

WikiD (Wiki/Data). Jeffrey A. Young OCLC Office of Research jyoung@oclc.org Distributed Service Registry Workshop Warwick, UK 14 July 2005. WikiD Overview. Ward Cunningham describes a wiki as "the simplest online database that could possibly work".

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WikiD (Wiki/Data)

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  1. WikiD (Wiki/Data) Jeffrey A. Young OCLC Office of Research jyoung@oclc.org Distributed Service Registry Workshop Warwick, UK 14 July 2005

  2. WikiD Overview • Ward Cunningham describes a wiki as "the simplest online database that could possibly work". • The cost of this simplicity is that wikis are generally limited to a single collection containing a single kind of record (viz. Wiki Markup Language records). • WikiD (Wiki/Data) extends the wiki model to support multiple collections containing arbitrary schemas of XML records with minimal additional complexity.

  3. What we’ll cover • Walkthrough of the conventional WikiPage creation process • Walkthrough of the WikiD “Collection” creation process • Discuss potential applications of WikiD • Discuss the architecture of WikiD

  4. Data democracy

  5. Click to edit this sandbox page

  6. Create a reference to a new WikiPage Click to save Changes

  7. The ‘?’ indicates that the page doesn’t exist yet. Click it to start the page creation process

  8. Click to save changes Type in some content according to the Wiki Markup Language rules Side note: “Category” WikiNames are special

  9. The question mark is gone, replaced with a hotlink to the new page

  10. Here is the Wiki Markup we entered, rendered into HTML for display

  11. “Collection” WikiNames • Some WikiNames can have special meaning (e.g. WikiNames that begin with the word “Category”) • For our purposes, we don’t care how “Category” WikiNames are special, only that they are treated differently by the WikiEngine • In the same spirit, WikiD treats WikiNames that start with the word “Collection” as special

  12. This is the WikiD sandbox page and we’re going to edit it

  13. The “Collection” prefix is special. We’re going to create a registry of open-source software projects Click to save changes

  14. The sandbox page has been updated to reflect our change. Click the ‘?’ to begin the collection creation process

  15. Before we create the collection, note that none of the listed XML Schemas suit our needs So, click to add a new schema

  16. Let’s identify our new XML Schema with the label: “software”

  17. Now, list the element names in our new XML Schema Give ourXML Schema a title Click “Create” to submit

  18. What gets stored is an XML Schema document generated from the list of elements we just entered

  19. We’re back to our collection creation form with our new XML Schema now included in the list of available XML Schemas Create the collection

  20. The ‘?’ is gone. We just created the collection, so our collection name is now hotlinked

  21. This is the collection home page. It’s time to add items to the collection.

  22. Here are the element names from the XML Schema I just created

  23. This is the collection home page, with several items added

  24. This is the display for a single item in the collection

  25. WikiD Features • Support for fielded searching (via SRW/U) • Support for XML Schema crosswalks (via XSL) • Support for custom HTML rendering (via XSL) • Support for custom collection-level actions (via Java classes and/or XSL) • Support to dynamically interact with external collections (e.g. OAI repositories, OPACS, OpenURL resolvers) • Supports a variety of protocols for input/output • OAI-PMH v2.0 • SRW/U • OpenURL 1.0 • RSS • Arbitrary URI resolution (via an embedded OpenURL 1.0 resolver)

  26. Servlets & Data Flows WikiD WebEdit OpenURL 1.0 SRW/U Update Pears DB Engine File system

  27. OpenURL 1.0 Resolver • A standard for performing context-sensitive “services” on “referents” (e.g. rendering of wiki markup records) • http://alcme.oclc.org/openurl/docs/pdf/z39_88_2004.pdf • Installation is configured to recognize wiki-type services • display • edit • delete • etc. • For this application, my plan is to embed this in the WikiD code rather than run it as a sibling web-app • http://www.oclc.org/research/projects/openurl/default.htm

  28. Wiki/OpenURL 1.0 Mapping

  29. Pears • A record-based database system • http://www.oclc.org/research/software/pears/default.htm

  30. SRW/U • Search/Retrieve Web/URL Service • A SOAP/REST search service standard • http://www.loc.gov/z3950/agency/zing/srw/brief.html • http://www.oclc.org/research/software/srw/default.htm

  31. Update • Update Web Service • A database update web service standard created by the SRW/U community • http://srw.cheshire3.org/docs/update/ • Enhanced to support file system-based version control of documents

  32. WebEdit • A lightweight open-source web-based record editor • Accepts HTML form submittals and transforms them into XML documents that conform to a desired XML Schema • Forwards the generated XML document to a corresponding Update service

  33. WikiD • An lightweight wiki front-end to an OpenURL 1.0 resolver • This combination supports wiki-enhancements for managing fielded data collections • http://outgoing.typepad.com/outgoing/2005/05/metawiki.html • doGet/doPost processing • Transforms a Wiki URL request into an OpenURL 1.0 ContextObject representation • Issues the ContextObject to the OpenURL resolver • Relays the resolver results back to the client

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