HELM Development

Documents/Information

• Preliminary description of WSs.

  • Many changes and details are needed.

• Preliminary helm.xsd

  • Many changes and details are needed.

  • Should VOEvent replace or augment Eventlist.xsd?

• Preliminary WADL for the HELM WSs. 

  • This, along with XSDs for any data passed across the client/server interface should help to add preciseness to the prose description of these services.

• Example clients

  • one using java.net.HttpURLConnection

  • one using Jersey client API

  • one using curl/sh

    • Includes conditional GET, OPTIONS, and HEAD requests.
    • Captured output

Issues

• Should MVCJ be considered for HTML interface?

• Should an XRX architecture be considered to satisfy UI requirements?

  • XForms on the client
  • REST interfaces
  • XQuery on the server

• Created test events:

  • Geotail and IMP8 bowshock crossings
  • CDAWeb events (application/x-heliophysics-event+xml)
  • CDAWeb events (application/x-simile+xml)

• Created simile-widget timeline event source example with CDAWeb events

  • Detailed description of representations

  • HELM Event-list XML: application/x-heliophysics-event+xml

  • JSON representation of HELM Event-list XML: application/json

  • HELM or hCalendar Microformat XHTML: application/xhtml+xml

  • simile-widget timeline event source: application/x-simile+xml

    • XSLT could create this xml file from a helm xml file but how can I do this when I need a JAXB object for HTTP serialization

  • VOEvent: application/x-voevent+xml

• Do I need a GET /PrivacyAndImportantMessages or /SecurityBanner service?  Contents depends upon whether WSs require authentication.  Should a link to such information be included in all reponses?

• Public/private lists

  • GF authentication probably can’t allow unathenticated (“guest”) at same URL as authenticated

• Account management

• HTML interface

  • XForms?  Is HTML interface for a limited audience who can be expected to install an XForms extension or would something like Orbeon be necessary?  Would opening eXist’s REST interface to the world for XForms be a security concern?

• package gov.nasa.gsfc.spdf.helm or gov.nasa.gsfc.helm ?