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CYCLADES and SDLIP Simple Digital Library Interface Protocol D-Lib Magazine, March 2000 www.dlib.org.

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Presentation on theme: "CYCLADES and SDLIP Simple Digital Library Interface Protocol D-Lib Magazine, March 2000 www.dlib.org."— Presentation transcript:

1 CYCLADES and SDLIP Simple Digital Library Interface Protocol D-Lib Magazine, March 2000

2 SDLIP - Issues State maintenance Complexity management Query language and format neutrality Transport neutrality

3 Search Middleware

4 State maintenance Search in DLs is highly interactive State maintenance with http difficult (stateless protocol) SDLIP: "parking meter" approach

5 Complexity Mgmt, Extensibility Restricted set of features vs. rich core (e.g. Z39.50) SDLIP: Metaobject protocols: Protocol components as objects with own metalevel interface Partitioning of operations into coherent interfaces Extensibility by adding interfaces

6 Partitioning of Operations

7 Query Language and Format Neutrality Query language One basic query language as minimum standard (analogous to DASL) Other query languages can be used as well Format of search results: XML

8 DASL Miller 1994

9 Transport Neutrality

10 SDLIP for CYCLADES Features relevant for CYCLADES: State maintenance Complexity management Transport neutrality Features to be extended: Query language and format neutrality Features to be added: Interface definitions for additional services


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