GDAS

This is a Programmer's Guide to the Geolinked Data Access Service(GDAS)Version Manager.

See:
Description

Packages

org.nfis.gdas.service
org.nfis.gdas.v091	This programmer's manual introduces the main classes of the GDAS 0.9.1 implementation.

This is a Programmer's Guide to the Geolinked Data Access Service(GDAS)Version Manager. For GDAS configuration information see the GDAS User Guide provided with the distribution.

GDAS Introduction

GDAS is a service that allows a linking between data held in a spatial data warehouse (an example would be a map layer containing the geographic descriptions of Canadian cities) and a database storing attribute information (such as a city's population). For a more in depth introduction to GDAS, read the introduction section in the Geolinked Data Access Service (GDAS) Specification Version 0.9.1 (2004-05-04).

GdasServlet

This GDAS implmentation is constructed in modules. The GdasServlet is the 'Version Manager' which determines which GDAS version is being requested and then delegates the request to the appropriate GDAS module (actually in separate web containers) according to section 6.2.4 of the GDAS specification.

All GDAS requests are directed to the GdasServlet. The servlet forwards the request to the correct GDAS module.

GDAS 0.9.1 Implementation

The GDAS Version Manager currently will forward requests to the GDAS 0.9.1 implementation.