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Integrated Approach to Test Geospatial Information Resources Based on INSPIRE Reference Validator API

Martin Tuchyňa, Katharina Schleidt and Tomáš Kliment

(Submission #152)


Abstract

At present, all aspects of an SDI must be individually validated; while this verifies that each part is correct on its own, it does not assure that together they provide a consistent overall system. In addition, this is a laborious process, as a separate test must be run for each aspect to be validated. Stakeholders found usage of ETF Web App quite difficult, and wished for a simple ”one-shot” method of validating their INSPIRE services. We describe an integrated approach, based on that fundamental building block of a Spatial Data Infrastructure (SDI) - complete and interconnected metadata available online. Instead of requiring the user to understand the intricacies of INSPIRE metadata, e.g. dataset metadata => network service interface => network service metadata => INSPIRE spatial data set => INSPIRE spatial data object, this information can be automatically extracted from a root metadata document, whereby the validation tool interprets the content of each metadata document accessed in order to glean information on relevant linked resources.

This testing strategy we have developed is based on metadata describing network services and spatial datasets, taking into account other basic concepts enforced in the European territory by the INSPIRE directive. The underlying validation has been performed through utilisation of the INSPIRE reference validator (aka ETF validator) and INSPIRE Geoportal Metadata Validator (aka validator2) Application Programming Interfaces (APIs). In order to demonstrate the research idea a pilot web application has been developed as proof of concept. More than 20 testing scenarios for national SDI in Slovakia were set up and used to perform validation of more than 50 INSPIRE testing objects using this pilot.

The graphic user interface we have developed offers user the options of pasting a URL to an XML metadata document, searching in national spatial data registry, providing a download service URI (e.g. WFS) from which the relevant metadata is extracted from the GetCapabilities response. The relevant resources such as service metadata (GetRecords), network services (GetCap) and INSPIRE datasets (GetFeature) get parsed, listed and prepared as testing objects for ETS. Once all tests have finished, the logs and reports get downloaded from ETF to our server and provided to the user in an easy to interpret format, organized by “organization / testing object / date / testing report”.

Categories

Topic Area:  [3.2] Tools and technologies
Abstract Type:  Oral Presentation and paper in IJSDIR

Additional Fields

 
Academic:   Yes
 
Data Provider:   Yes
 
Data User:   No
 
INSPIRE Implementer (IT):   Yes
 
INSPIRE newbies:   Yes
 
Policy Officers:   No
 
Public Administration (MS/Regional/Local):   Yes
 
Thematic specialists:   No
 
Comments:   Spatial Data Infrastructure, INSPIRE, ETS, metadata, validation, conformity, testing, integration, reporting


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