@Override
public void run() {
OntologyHelper helper = helpers.get(threadKey);
if (helper != null) {
// Check if the last call time was longer ago than the maximum
if (System.currentTimeMillis() - DELETE_CHECK_DELAY_MS > helper.getLastCallTime()) {
// Assume helper is out of use - dispose of it to allow memory to be freed
helper.dispose();
helpers.remove(threadKey);
}
}
}
