OAI-PMH: Unterschied zwischen den Versionen
Aus Geoinformation HSR
Stefan (Diskussion | Beiträge) (→Weblinks) |
Stefan (Diskussion | Beiträge) (→Weblinks) |
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** [http://indico.cern.ch/getFile.py/access?resId=1&materialId=0&contribId=s2t3&sessionId=2&subContId=2&confId=a035925 Tutorial: Implementing the OAI-PMH - an introduction] by Uwe Müller, 2004 | ** [http://indico.cern.ch/getFile.py/access?resId=1&materialId=0&contribId=s2t3&sessionId=2&subContId=2&confId=a035925 Tutorial: Implementing the OAI-PMH - an introduction] by Uwe Müller, 2004 | ||
* Papers: | * Papers: | ||
− | ** [http://www.commission4.isprs.org/workshop_hangzhou/papers/77-82%20Haixia%20Mao-A150.pdf | + | ** [http://www.commission4.isprs.org/workshop_hangzhou/papers/77-82%20Haixia%20Mao-A150.pdf "OAI-PMH Based Interoperation For Spatial Metadata"] by Haixia Mao (2005). In: ISPRS Workshop on Service and Application of Spatial Data Infrastructure, XXXVI(4/W6), Oct.14-16 2005, Hangzhou, China. |
− | ** [http://go-geo.data-archive.ac.uk/OAI.doc Use of OAI to disclose metadata as an output from the portal] From: Go-Geo! Geo-Data Portal Project | + | ** [http://go-geo.data-archive.ac.uk/OAI.doc "Use of OAI to disclose metadata as an output from the portal"] From: Go-Geo! Geo-Data Portal Project |
− | ** [http://www.public.iastate.edu/~gerrymck/OpenContent.ppt | + | ** [http://www.public.iastate.edu/~gerrymck/OpenContent.ppt "Open Content and Access for Digital Scholarship"] by Gerry McKiernan, 2004 (describes use of map resources) |
− | ** [http://arxiv.org/abs/cs.DL/0601125 Metadata aggregation and automated digital libraries: A retrospective on the NSDL experience"] by Lagoze, Carl et al (2006). | + | ** [http://arxiv.org/abs/cs.DL/0601125 "Metadata aggregation and automated digital libraries: A retrospective on the NSDL experience"] by Lagoze, Carl et al (2006). |
* Software and Tools: | * Software and Tools: | ||
** OAI-PMH Data Provider Components (open source): | ** OAI-PMH Data Provider Components (open source): |
Version vom 10. August 2006, 00:35 Uhr
'Open Archives Initiative Protocol for Metadata Harvesting'. Part of discussion about open source geodata.
Inhaltsverzeichnis
Description
- Leightweight:
- A low barrier interoperability specification
- RESTful: HTTP based, GET / POST requests, XML responses
- Clear concepts:
- Based around metadata harvesting model (metadata aggregation and syndication)
- Metadata about resources, mandates unqualified Dublin Core as default
- Not a search protocol! That could be for example enhanced or merged versions of OpenSearch/GeoRSS and SRU/SRW besides WFS.
- Extendable: Has extension mechanism for more domain specific metadata models
- Stable: OAI has committed to making subsequent revisions of the protocol backwards compatible.
- Established: Implemented - among others - by Google, CiteSeer and MSN as well as by dozens of open source tools, like OAICat (Java) or mod_oai (C, installed at 500 sites); see more tools in the Weblinks section below.
There are following alternatives (Remarks: all considered either inappropriate or not established or at least 'painfull' compared to OAI-PMH):
- Z39.50 and SRW - the more leightweight and 'modern' successor of Z39.50
- UDDI - the SOAP thing
- WFS - the OGC thing
Architecture
Specifications
- OAI-PMH 2.0 Spec. - Specification for Open Archives Initiative Protocol for Metadata Harvesting 2.0
- OAI-PMH Static Repository 2.0 Spec. - Specification for an OAI Static Repository and an OAI Static Repository Gateway 2.0
For Tools and Demos see Weblinks section below.
Weblinks
- Tutorials and short explanations:
- Concise technical description of the protocol
- OAI for beginners, OAI and OAI-PMH for absolute beginners by Philip Hunter, 2005.
- Tutorial: Implementing the OAI-PMH - an introduction by Uwe Müller, 2004
- Papers:
- "OAI-PMH Based Interoperation For Spatial Metadata" by Haixia Mao (2005). In: ISPRS Workshop on Service and Application of Spatial Data Infrastructure, XXXVI(4/W6), Oct.14-16 2005, Hangzhou, China.
- "Use of OAI to disclose metadata as an output from the portal" From: Go-Geo! Geo-Data Portal Project
- "Open Content and Access for Digital Scholarship" by Gerry McKiernan, 2004 (describes use of map resources)
- "Metadata aggregation and automated digital libraries: A retrospective on the NSDL experience" by Lagoze, Carl et al (2006).
- Software and Tools:
- OAI-PMH Data Provider Components (open source):
- OAI tools list from OAI-Home, tools from HU Berlin
- Java: OAICat
- PHP: hu-berlin.de, ...
- OAI-PMH Static Repository Gateways (open source):
- srepod - OAI-PMH Static Repository Gateway (C)
- Digital Repository System Software (open source):
- DSpace (Java)
- OAI-PMH Data Provider Components (open source):
- Demos and examples:
- Demo of OAICat - The OAICat Open Source project is a Java Servlet web application providing an OAI-PMH v2.0 repository framework.
- OAIster - Most often mentioned collection of freely available, previously difficult-to-access, academically-oriented digital resources that are easily searchable by anyone.
- PKP Open Archives Harvester - Free metadata indexing system developed by the Public Knowledge Project through its federally funded efforts to expand and improve access to research.
- OJAX Demo - Federated Metasearch Service using Ajax/Lucene