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 runRequired 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
Build:
docker build -t sparql2graphserver .
Run:
docker run -it --rm -p 5000:5000 sparql2graphserver