Sparql Diamonds
These are small demos of an architectural pattern that can be useful for rapid development of data-driven applications.
The demos are designed to operate against a SPARQL server with query construction and result formatting carried out in browser Javascript.
Three demos are currently available :
wikidata-knot - shows how to pull data from Wikidata using a fixed query, and display the results in a Web page
wikidata-name - as above, but with a query variable supplied by the user
bookmarks - a simple Web link bookmarking system
Status
2021-08-12 : three demos functional
detailed status can be found in devlog.md
Installation
Wikidata Demos
- Clone or download this repository
- Point a Web server at the html directory
- Open the corresponding URL in a Web browser
Note to self - might these work on a github.io page?
Bookmarks
As above, plus this mini-application requires a SPARQL Server with write permissions (SPARQL INSERT via HTTP POST).
To run it on a Fuseki server, follow the install instructions there.
You will need to create a dataset in Fuseki called 'bookmarks' (a TBD store is recommended for persistence).
The file js/config.js should be edited to match your Fuseki configuration.
eg. with Fuseki launched via :
apache-jena-fuseki-4.1.0/fuseki-server --port 3333
an appropriate config.js would contain :
var SparqlServer = {
host: 'http://localhost:3333',
queryPath: '/bookmarks/sparql',
updatePath: '/bookmarks/update'
}
There is some sample data (as a SPARQL INSERT) in sparql-templates/bookmarks-samples-inset.rq
Then point a browser at the URL corresponding to html/bookmarks.html
Additionally, at html/bookmarklet.html there is a bookmarklet link that may be dragged to your browser's toolbar to pre-fill the form with the current page address.