Comunica Statistic Link Dereference


A statistics tracker package for tracking link dereferences during query execution in Comunica. This class must be added to the context with the key defined in the class.

This module is part of the Comunica framework,

Click here if you just want to query with Comunica.

Install

``bash
$ yarn add @comunica/statistic-link-dereference
`

Using the tracker

`javascript
const QueryEngine = require('@comunica/query-sparql').QueryEngine;
const myEngine = new QueryEngine();
const statisticTracker = new StatisticLinkDereference();

// Print any data emitted by the tracker
statisticTracker.on((data) => console.log(data));

// Add the tracker to the context
let context = {sources: ['https://fragments.dbpedia.org/2015/en']};
context[statisticTracker.key.name] = statisticTracker;

// Execute the query
const bindingsStream = await myEngine.queryBindings(
SELECT ?s ?p ?o WHERE {
?s ?p ?o
} LIMIT 10, context);
bindingsStream.on('data', (binding) => {
console.log(binding.toString());
});
``