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INSPIRE Architecture & WISE

INSPIRE Architecture & WISE. Steve Peedell Spatial Data Infrastructures Unit European Commission Joint Research Centre. Presentation Overview. INSPIRE Directive Overview and Status Implementing Rules Development - Progress INSPIRE Architecture Overview Impact on WISE. INSPIRE Overview.

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INSPIRE Architecture & WISE

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  1. INSPIRE Architecture & WISE Steve Peedell Spatial Data Infrastructures Unit European Commission Joint Research Centre

  2. Presentation Overview • INSPIRE Directive Overview and Status • Implementing Rules Development - Progress • INSPIRE Architecture Overview • Impact on WISE

  3. INSPIRE Overview • INSPIRE implies a distributed architecture • Building on infrastructure in Member States (Article 1 §2) • MS to establish and operate a network of services (Article 11 §1) • Architecture primarily relevant to Network Services, one of the three technical chapters of the Directive • Metadata • Interoperability of spatial data sets and services • Network services (discovery, view, download, invoke) • Advocates use of Open Standards (Article 20) • JRC is responsible for overall technical coordination of INSPIRE • Progress to date: • Adoption of Directive May 2007, entering transposition phase • Implementing Rules drafting

  4. Work Programme 2007-2009 Implementing Rule development cycle Text of Directive Reference materials Requirements Drafting of IR Testing of draft IR Manage evolution of IRs Stakeholders (SDICs, LMOs): Reference material Experts Projects Stakeholder consultation Commission Decision Regulatory process Commission inter-service consultation

  5. INSPIRE Roadmap

  6. INSPIRE Architecture Overview • Produced by Network Services Drafting Team with input from other DT’s • Informative document produced, NOT an Implementing Rule • Service layer consisting of Discovery, View, Download, Transform and Invoke Services • Recognises that INSPIRE does not cover all the services and components necessary to build an infrastructure • e.g. Registry services • How to transport messages between components? • HTTP/GET, HTTP/POST (OGC) vs SOAP (W3C) • GetCapabilities (OGC) vs WSDL (W3C) • Need for further investigation of feasibility of SOAP/WSDL for INSPIRE Network Services • INSPIRE Material does not provide detailed implementation guidance • Much of this would be tool-specific, or generic best practice (e.g. how to scale services for dealing with very large datasets)

  7. DT NS INSPIRE Architecture Overview Application and Geoportals Service Bus GeoRM layers Service Layer Registry Service Discovery Service Transf. Service ViewService DownloadService InvokeSDService DT MD DT DS Registers Service Metadata Data Set Metadata Spatial Data Set Data Sources TWG TWG TWG Thematic DS Framework for harmonized DS

  8. Discovery Services • INSPIRE Discovery Services provide the functionality to search through catalogues • Describe, publish, discover, manage, harvest • Mature area of standardisation • Existing standards & specifications available • Community endorsement & deployment • OGC Catalogue Service for the Web ISO 19115/9 Application Profile shall be used as the reference specification for the INSPIRE Discovery Service

  9. View Services • INSPIRE View Services provide the functionality to serve visual representations of the data covered by the Directive Annexes • Publish, request, feature info, manage • Mature area of standardisation • Existing standards available • Community endorsement & deployment • ISO 19128:2005 (OGC Web Map Service 1.3.0) shall be used as the implementation standard for the INSPIRE View Service

  10. Download Services • Download services: enabling copies of spatial data sets, or parts of such sets, to be downloaded, and where practicable, access directly. • Data set: • one or more physical files serialized in an encoding format • Database realized in a concrete database system • part of one of the above specified by some filter(query, …) • Generic use case: • Discover using a discovery service on metadata, • Select desired data sets, • Apply filter to identify part of selected data sets (if appropriate), • Download using one or more download services defined in the IR.

  11. Download Services • 3 possibilities: • • Full data set download based on discovery: • –Normally implemented through a discovery client, • –Find => Select => Download using http. • • Partial data set download based on discovery and filter: • –As the previous but with addition of a filter condition using FE • (Filter Encoding), • –Reliant on FE and harmonized application schema. • • Partial (or full) data set download based on WFS / WCS includingFE: • –FE specification input based on harmonized application schema, • –GML output according to harmonized application schema.

  12. Download Services Components • Tools: • • Discovery service NS DT (OGC CSW) • • Web Feature Service OGC WFS / ISO 19142 • • Filter Encoding OGC Filter Encoding / ISO 19143 • • Web Coverage Service OGC WCS • • GML ISO 19136 • • Harmonized app. schema DS DT • • HTTP protocol IETF • • Web Services W3C (SOAP/WSDL/UDDI) • After Discovery and View services, Download services are the next step, • Common issues with DS DT - closely linked to guidelines for encoding of spatial data

  13. Guidelines on encoding • Data Specifications Drafting Team document D2.7 - “Guidelines for the Encoding of Spatial Data” • Supporting interchange models from “traditional” (encoding, then transfer via ftp / storage media) to “interoperability” (via services) • Endorsing GML (ISO 19136) for transfer of spatial objects, ISO19139 for transfer of catalogues, data dictionaries and feature catalogues • Working on assumption that WFS/WCS are included by NS DT • For coverage data (raster) encoding, aim is to have a limited number of community endorsed formats - GeoTIFF, JPEG2000 etc • Avoid format spread

  14. WISE Requirements • Building block of INSPIRE, SEIS • Shared architecture principles • Distributed system, open standards • Service oriented architecture • Re-use and sharing • In scope of certain INSPIRE Implementing Rules • General architecture - WISE chapter 4 • Metadata - WISE Chapter 5.5 • Interoperability of Spatial Datasets and Services • General - WISE Chapter 5.1 • Data model - WISE Chapter 5.3 • Data exchange - WISE Chapter 5.6 • Data harmonisation - WISE Chapter 6.1 • Network Services - WISE Chapter 5.7 (check status)

  15. Progress - Data Specifications • The development of INSPIRE Implementing rules for the interoperability and, where practicable, harmonisation of spatial data sets and services follow a two-step approach: • Development of conceptual framework and specification methodology. • DS-D 2.5 Generic Conceptual Model (GCM), • DS-D 2.6 Methodology for Specification Development, • DS-D 2.7 Guidelines for the Encoding of Spatial Data. • Development of data specifications for each data theme • Based on the conceptual framework and specification methodology, and based on the INSPIRE roadmap

  16. Conclusions • The revised GIS guidance now foresees a distributed architecture for WISE • INSPIRE provides draft Implementing Rules for View & Discovery Services • Download services in preparation • INSPIRE architecture overview available • Only spatial is in scope of INSPIRE • Clarification in the guidance would be helpful on the scenarios in WISE where these services will operate, chapters 5.6, 5.7 • In INSPIRE organisational model, need for WISE community at MS level to liaise closely with the national INSPIRE contact point on architecture issues

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