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World Meteorological Organization Working together in weather, climate and water WMO Information System (WIS) Search (with SRU) Timo Pröscholdt (PO-WIS)

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Presentation on theme: "World Meteorological Organization Working together in weather, climate and water WMO Information System (WIS) Search (with SRU) Timo Pröscholdt (PO-WIS)"— Presentation transcript:

1 World Meteorological Organization Working together in weather, climate and water WMO Information System (WIS) Search (with SRU) Timo Pröscholdt (PO-WIS) WMO; Observations and Information Systems Departmentwww.wmo.int/wis WMO

2 Why is search important? Search lets users find what they are looking for but also find you by implementing the search interface you become compatible with WIS “hierarchical” search (GISC->.. -> local search)

3 Search in WIS / What is SRU? SRU is the designated search standard for WIS Search/Retrieval via URL ISO profile, builds on Information Retrieval Takes the concept of ISO to the web New query syntax (CQL 1 ) and transport (HTTP) But well-known “concept” remains the same 1 Contextual query language

4 Search in WIS / What is SRU? Example (SRU vs. classic 23950) We are looking for all WMO publications about WIS classic ISO we use e.G yaz-client open TCP 1=4 1=1003 WMO XML or other response ISO / SRU we use our browser search service via CGI interface = title=WIS and publisher=WMOhttp://example.com/sru?query XML response

5 Search in WIS This presentation is about: How to interface your system with SRU (making it WIS compatible in the process)

6 Search in WIS Three use cases 1.No metadata management yet 2.Working classic ISO interface but no SRU 3.complex metadata management present, but customized SRU integration desired

7 Search in WIS case I: No metadata management Use geonetwork for managing metadata We have added a SRU interface Also has CSW and classical ISO interfaces Can be installed on desktop and server (tomcat, SQL Database)

8 Search in WIS case I: No metadata management Geonetwork (java) ISO SRU CSW WebPortal User searches via Oracle, MySQL Postgres, Mckoi Tomcat / Jetty on *NIX / Windows classic ISO 23950

9 Search in WIS case II: Working classic ISO interface Translate classic ISO into ISO SRU Use yazproxy Yazproxy is opensource C/C++ (windows/*NIX) dedicated server-process

10 Search in WIS case II: Working classic ISO interface Existing Software ISO SRU WebPortal User searches via Yazproxy process on *NIX/Windows (needs compilation) classic ISO 23950

11 Search in WIS case III: system integration Libraries can be used to add SRU interface to existing software Requires change of sourcecode but allows for good integration into existing workflow Use Jzkit, OCLC SRW/SRU, Yaz,.. Suport for Java,C/C++ and perl

12 Search in WIS case III: system integration Existing software doing billing or authentication ISO SRU WebPortal User searches via classic ISO Database Java/C Perl JZkit, Yaz

13 Thank you! Questions?


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