Package Exports
- seki
This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (seki) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.
Readme
Seki is a front-end to an independent SPARQL server using node.js
It operates as a Web server, building queries from HTTP requests and passing them to the SPARQL server and formatting the results to HTML which is passed back to the client (typically a browser).
For updates see Seki on G+
Also TODO List
Note 2013-08-15 : currently trying to package as npm and tidy up dependencies - may be a messfor a little while
If (were it live) you pointed a browser at http://hyperdata.org/seki/Hello it would take "http://hyperdata.org/seki/Hello" to build a query to find out about that resource - in the data store it will have a title, content etc. - which then get turned into HTML to show in the browser.
There is a form to allow POSTing, inserting title, content etc. for a given resource into the RDF store (there's no authentication as yet). Files can also be served from the filesystem.
It has been built against a Fuseki server, which uses protocols/query syntax according to the latest SPARQL 1.1 drafts, and so it should be reusable with any SPARQL server.
(Note that the current version includes a little SAX-based XML SPARQL results to JSON converter, this was for demo purposes (don't ask!) - future versions may use JSON SPARQL results directly).
At present it considers all resources to be information resources - the ones that get displayed are instances of sioc:Post. Descriptions of those resources are contained in little named graphs (named by the resources in question). The Fuseki config includes #dataset tdb:unionDefaultGraph true so SPARQL queries can be applied over a (virtual) merge of all the named graphs.
After the tutorial version is stable the plan is to use it as an experimental Read/Write Data Web testbed, e.g. adding support for the linked data API, RDF affordances play.
See contents.txt in individual folders for description.
Installation/running is easy :
- install node.js (or copy node.exe into the src dir)
- run Fuseki using jena-fuseki-0.2.6/run.bat (make executable first on *nix)
- in another terminal: node seki.js
- point a browser at http://localhost:8888/seki/
post data should have URIs of the form http://hyperdata.org/seki/Hello the Fuseki server (SPARQL endpoint) will be accessible at http://localhost:3030/
Exploring data from Fuseki, first select the /seki dataset through the Control Panel, then go to the query panel with e.g. SELECT * WHERE { GRAPH ?graph { ?s ?p ?o } }
Danny 2011-2013