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Sparql2GraphServer

Server code for performing a SPARQL query for social network, and output it in a JSON format suitable for cytoscape.js

start localhost http://127.0.0.1:5000/ with:

source env/bin/activate
export FLASK_APP=app/routes.py
flask run

Required POST (or GET) query parameters:

parameter description
links SPARQL query, example, has to return values ?source and ?target required
nodes SPARQL query, example, <ID_SET> is filled automatically, has to return value ?id required
endpoint Server endpoint required
id Resource url, if provided, returns an egocentric network optional, default None
prefixes SPARQL prefixes, for shortening the nodes and links parameters optional, default ""
limit Limit the number of links optional, default 1000
format Output format: 'cytoscape' or 'graphml' default 'cytoscape'
optimize First performs a query with optimize*limit results, and then densifies the network. optional, default 1.0
removeMultipleLinks show only one link between nodes optional, default True
customHttpHeaders Headers, e.g. 'Authorization', of the query optional, default None

Returns JSON with fields elements for input to cytoscape.js, and metrics currently containing network metrics of average degree, diameter, and number of connected components.

Simple HTML demo with plain javascript in folder cytoscape.

Python 3.8.0 requirements.txt

Docker

Build:

docker build -t sparql2graphserver .

Run:

docker run -it --rm -p 5000:5000 sparql2graphserver