Extractors

Each network manages a field of extractors, who are integrated once on loading the browser and then regularly checked and triggered. Once triggered, an extractor grabs a certain set of static fields of the social network and saves it inside the Rose data structure. An extractor is configured to grab information every two days and is checked against this interval every 10 minutes.

Two extractors have been added, one for Privacy settings, one for the Timeline settings of the Facebook social network. The Storage class has been adapted to store the interval times of an extractor.