/**
* Get polygons covering the components of the graph. The largest component (in terms of number of
* nodes) will not overlap any other components (it will have holes); the others may overlap each
* other.
*
* @param modes
* @return
*/
@Secured({"ROLE_USER"})
@GET
@Path("/polygons")
@Produces({MediaType.APPLICATION_JSON})
public GraphComponentPolygons getComponentPolygons(
@DefaultValue("TRANSIT,WALK") @QueryParam("modes") TraverseModeSet modes,
@QueryParam(RequestInf.DATE) String date,
@QueryParam(RequestInf.TIME) String time,
@DefaultValue("") @QueryParam(RequestInf.BANNED_ROUTES) String bannedRoutes) {
TraverseOptions options = new TraverseOptions(modes);
options.bannedRoutes = new HashSet<RouteSpec>();
if (bannedRoutes.length() > 0) {
for (String element : bannedRoutes.split(",")) {
String[] routeSpec = element.split("_", 2);
if (routeSpec.length != 2) {
throw new IllegalArgumentException("AgencyId or routeId not set in bannedRoutes list");
}
options.bannedRoutes.add(new RouteSpec(routeSpec[0], routeSpec[1]));
}
}
long dateTime = DateUtils.toDate(date, time).getTime();
if (cachedPolygons == null || dateTime != cachedDateTime || !options.equals(cachedOptions)) {
cachedOptions = options;
cachedDateTime = dateTime;
Graph graph = graphService.getGraph();
if (graphService.getCalendarService() != null) {
options.setCalendarService(graphService.getCalendarService());
}
options.setServiceDays(dateTime, graph.getAgencyIds());
cachedPolygons = AnalysisUtils.getComponentPolygons(graph, options, dateTime);
}
GraphComponentPolygons out = new GraphComponentPolygons();
out.components = new ArrayList<GraphComponent>();
for (Geometry geometry : cachedPolygons) {
GraphComponent component = new GraphComponent();
component.polygon = geometry;
out.components.add(component);
}
return out;
}
/**
* Cache ServiceDay objects representing which services are running yesterday, today, and tomorrow
* relative to the search time. This information is very heavily used (at every transit boarding)
* and Date operations were identified as a performance bottleneck. Must be called after the
* TraverseOptions already has a CalendarService set.
*/
public void setServiceDays() {
final long SEC_IN_DAY = 60 * 60 * 24;
final long time = opt.getSecondsSinceEpoch();
this.serviceDays = new ArrayList<ServiceDay>(3);
if (calendarService == null
&& graph.getCalendarService() != null
&& (opt.getModes() == null || opt.getModes().contains(TraverseMode.TRANSIT))) {
LOG.warn("RoutingContext has no CalendarService. Transit will never be boarded.");
return;
}
// This should be a valid way to find yesterday and tomorrow,
// since DST changes more than one hour after midnight in US/EU.
// But is this true everywhere?
for (String agency : graph.getAgencyIds()) {
addIfNotExists(
this.serviceDays, new ServiceDay(graph, time - SEC_IN_DAY, calendarService, agency));
addIfNotExists(this.serviceDays, new ServiceDay(graph, time, calendarService, agency));
addIfNotExists(
this.serviceDays, new ServiceDay(graph, time + SEC_IN_DAY, calendarService, agency));
}
}