/** Get a list of all VitroBackgroundThreads that have not died. */
public static List<VitroBackgroundThread> getLivingThreads() {
List<VitroBackgroundThread> list = new ArrayList<VitroBackgroundThread>();
for (VitroBackgroundThread t : getThreads()) {
if (t.isAlive()) {
list.add(t);
}
}
return list;
}
protected ResponseValues processRequest(VitroRequest vreq) {
Map<String, Object> body = new HashMap<String, Object>();
String messageStr = "";
try {
Object sr = getServletContext().getAttribute(SimpleReasoner.class.getName());
if (!(sr instanceof SimpleReasoner)) {
messageStr = "No SimpleReasoner has been set up.";
} else {
SimpleReasoner simpleReasoner = (SimpleReasoner) sr;
if (simpleReasoner.isABoxReasoningAsynchronous()) {
messageStr =
"Reasoning is currently in asynchronous mode so a recompute cannot be started. Please try again later.";
} else if (simpleReasoner.isRecomputing()) {
messageStr = "The system is currently in the process of " + "recomputing inferences.";
} else {
String submit = (String) vreq.getParameter("submit");
if (submit != null) {
VitroBackgroundThread thread =
new VitroBackgroundThread(
new Recomputer((simpleReasoner)),
"SimpleReasonerRecomputController.Recomputer");
thread.setWorkLevel(WORKING);
thread.start();
messageStr = "Recompute of inferences started. See log for further details.";
} else {
body.put("formAction", UrlBuilder.getUrl("/RecomputeInferences"));
}
}
}
} catch (Exception e) {
log.error("Error recomputing inferences with SimpleReasoner", e);
body.put(
"errorMessage", "There was an error while recomputing inferences: " + e.getMessage());
return new ExceptionResponseValues(RECOMPUTE_INFERENCES_FTL, body, e);
}
body.put("message", messageStr);
return new TemplateResponseValues(RECOMPUTE_INFERENCES_FTL, body);
}