OPeNDAP: User Versus Programmatic Access
Creators: name: Chamberlain, John
Publisher: name: Zenodo
Year: 2007

description: This slide deck was presented as part of the OPeNDAP Developer's Workshop, Winter 2007 that was held from February 21-23, 2007 at the NCAR Foothills Laboratory in Boulder, CO. 

Summary of the slide deck: This slide deck discusses the distinction between user and programmatic access in client interactions with OPeNDAP. Client access is divided into user and programmatic halves, with the user client interacting with the user and the programmatic client interacting with the server. The slide deck emphasizes the importance of separating these two halves for better design, data validation, and integrity. The functionalities of both user and programmatic clients are highlighted, including describing how the OCAPI serves as a pure programmatic client, fully implementing the DAP data model in C. Use cases and solutions are described, such as the integration of basic OPeNDAP functionality into existing analysis packages and the creation of web data browsers using Java applets. The slide deck concludes by noting the unique querying and presentation abilities of user clients and the reliable interface of programmatic clients with data servers, highlighting the benefits of segregating GUI transactions from data transactions for more sophisticated programmatic clients.

 

AGENDA OF THE WORKSHOP 

[Almost all of the presentation listed here are available in the OPeNDAP Community Zenodo library.] 

Wednesday February 21, 2007

Session 1

0900-1000 OPeNDAP Current Status



Introduction by Peter Fox, President of OPeNDAP


1000-1015 Break

Session 2 (moderator: P. Fox)

1015-1200 The OPeNDAP 4 Data Server (aka Hyrax)



James Gallagher and Nathan Potter - Customizing and Extending Hyrax

Patrick West - Harnessing the power of the Server 4 Back-End Server modular framework

Jose H. Garcia - Numerical Grid Computations with the OPeNDAP Back End Server (BES)

Patrick West - OPeNDAP Server 4 Back-End Server Authentication and Authorization


Lunch 1215-1330

Session 3 (moderator: P. Cornillon)

1330-1530 Security



John Relph and Kenneth S. Casey - Software Development and Security at NOAA

John Caron - The THREDDS Data Server and OPeNDAP security

Tim Pugh - BMRCs OPeNDAP data service, how far can it reach?

Discussion


1530-1545 Break

Session 4 (moderator: J. Gallagher)

1545-1730 Semantics



Benno Blumenthal- Using an RDF framework to carry metadata for datasets

Rob Raskin - SWEET - an upper-level ontology for Earth and Space Sciences

(withdrawn) Luis Bermudez - MMI and CF

Peter Fox - OPeNDAP and semantics

Discussion


Dinner

No-host dinner, Cafe Gondolier

 

Thursday February 22, 2007

Session 5 (moderator: D. Holloway)

0900-1030 APIs and Clients



Roberto De Almeida - Data Access Protocol meets Python

Peter Cornillon - The Matlab OPeNDAP GUI Suite


1030-1100 Break



Poster: Denis Nadeau - Enhancing Access to NASA Satellite Data OGC Web Services using OPeNDAP.


Session 5 continued

1100-1215 APIs and Clients (continued)



John Chamberlain - OPeNDAP: User Versus Programmatic Access

Greg Janee - Data Discovery in a Distributed Environment and Darren Hardy's AGU presentation.


Lunch 1215-1315

Session 6 (moderator: P. Cornillon)

1315-1445 Data Providers



Roy Mendelssohn - OPeNDAP at ERD with suggestions for future development

Jim Potemra - IPRC data transport, LAS and EPIC server

Christopher Lynnes - OPeNDAP Developments at the Goddard Earth Sciences DISC

Thomas LOUBRIEU - OPeNDAP in European oceanography data management


Session 7 (moderator: N. Potter)

1445-1715 Server-Side Operations with 1530-1600 Break



Wenli Yang - The ROSES ACCESS OPeNDAP/OGC Gateway Project

Roland Schweitzer - Server-side OPeNDAP Analysis - A General Approach Utilizing Legacy Applications through TDS

Daniel L. Wang - Server-side Data Reduction and Analysis with Script Workflow Analysis for MultiProcessing (SWAMP)

Thomas LOUBRIEU - Dap4cor: A Dapper-like server for CORIOLIS in-situ data centre


Dinner

Dinner on your own

 

Friday February 23, 2007

Session 9 (moderator: P. Fox)

0900-0930 Server-side functions (continued)



James Gallagher - Server-side Functions for Geo-spatial Selection


0930-1200 Strategies and Directions



Discussion (with nominal time allocations) focusing on...

community forums for deciding on standards processes within (and beyond) the OPeNDAP community, who is involved, timeframe, prototypes, etc. (1hr)

security (20min)

semantics (profiles, vocabularies) (20min)

server-side (aggregation) (20min)

response types (e.g. get_capabilities) (20min)

metrics (10min)

others: gateways, Server4, TDS and other general direction issues


Lunch

Hyrax Tutorial (FL2/1001): 1300-1630

Dinner

No-host dinner, location TBA