initial version of a json service getting the race states for all races of an event

java/com.sap.sailing.domain.shared.android/src/com/sap/sailing/domain/racelog/RaceLog.java

@@ -41,5 +41,9 @@ public interface RaceLog extends Track<RaceLogEvent> {
      * Remove a listener.
      */
     void removeListener(RaceLogEventVisitor listener);
-
+    
+    /**
+     * Checks if the race log is empty.
+     */
+    boolean isEmpty();
 }

java/com.sap.sailing.domain.shared.android/src/com/sap/sailing/domain/racelog/impl/RaceLogImpl.java

@@ -93,6 +93,11 @@ public class RaceLogImpl extends TrackImpl<RaceLogEvent> implements RaceLog {
         }
     }
 
+    @Override
+    public boolean isEmpty() {
+        return getFirstRawFix() == null;
+    }
+
     @Override
     public void addListener(RaceLogEventVisitor listener) {
         synchronized (listeners) {
@@ -124,5 +129,4 @@ public class RaceLogImpl extends TrackImpl<RaceLogEvent> implements RaceLog {
         ois.defaultReadObject();
         listeners = new HashSet<RaceLogEventVisitor>();
     }
-
 }

java/com.sap.sailing.server.gateway/WEB-INF/web.xml

@@ -58,7 +58,16 @@
 		<servlet-name>RCCompetitors</servlet-name>
 		<url-pattern>/rc/competitors</url-pattern>
 	</servlet-mapping>
-	
+
+	<servlet>
+		<servlet-name>RCRegattaRaceStates</servlet-name>
+		<servlet-class>com.sap.sailing.server.gateway.impl.rc.RegattaRaceStatesJsonGetServlet</servlet-class>
+	</servlet>
+	<servlet-mapping>
+		<servlet-name>RCRegattaRaceStates</servlet-name>
+		<url-pattern>/rc/regattaRaceStates</url-pattern>
+	</servlet-mapping>
+		
 	<!-- RACE COMMITTEE END -->
 
 	<servlet>

java/com.sap.sailing.server.gateway/src/com/sap/sailing/server/gateway/impl/rc/RegattaRaceStatesJsonGetServlet.java

@@ -0,0 +1,129 @@
+package com.sap.sailing.server.gateway.impl.rc;
+
+import java.io.IOException;
+import java.util.UUID;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.json.simple.JSONArray;
+import org.json.simple.JSONObject;
+
+import com.sap.sailing.domain.base.CourseArea;
+import com.sap.sailing.domain.base.Event;
+import com.sap.sailing.domain.base.Fleet;
+import com.sap.sailing.domain.base.RaceColumn;
+import com.sap.sailing.domain.common.RaceIdentifier;
+import com.sap.sailing.domain.leaderboard.Leaderboard;
+import com.sap.sailing.domain.racelog.RaceLog;
+import com.sap.sailing.domain.racelog.RaceLogFlagEvent;
+import com.sap.sailing.domain.racelog.analyzing.impl.GateLineOpeningTimeFinder;
+import com.sap.sailing.domain.racelog.analyzing.impl.LastFlagFinder;
+import com.sap.sailing.domain.racelog.analyzing.impl.PathfinderFinder;
+import com.sap.sailing.domain.racelog.analyzing.impl.RaceStatusAnalyzer;
+import com.sap.sailing.domain.racelog.analyzing.impl.StartTimeFinder;
+import com.sap.sailing.server.gateway.AbstractJsonHttpServlet;
+
+public class RegattaRaceStatesJsonGetServlet extends AbstractJsonHttpServlet {
+    private static final long serialVersionUID = -4820965681871902242L;
+
+    private static final String PARAM_NAME_EVENTID = "eventId";
+
+    public static final String FIELD_EVENT_NAME = "name";
+    public static final String FIELD_EVENT_ID = "id";
+    public static final String FIELD_RACE_STATES = "raceStates";
+    
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+        String eventIdParam = request.getParameter(PARAM_NAME_EVENTID);
+        if (eventIdParam == null) {
+            response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "You need to specify a event id using the "+
+                    PARAM_NAME_EVENTID + " parameter");
+        } else {
+            Event event = getService().getEvent(convertIdentifierStringToUuid(eventIdParam));
+            if (event == null) {
+                response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "Event "+eventIdParam+" not found");
+            } else {
+                JSONObject result = new JSONObject();
+                
+                result.put(FIELD_EVENT_NAME, event.getName());
+                result.put(FIELD_EVENT_ID, event.getId().toString());
+
+                JSONArray raceStatesLogEntriesJson = new JSONArray();
+                result.put(FIELD_RACE_STATES, raceStatesLogEntriesJson);
+
+                for (CourseArea courseArea : event.getVenue().getCourseAreas()) {
+                    for (Leaderboard leaderboard : getService().getLeaderboards().values()) {
+                        if (leaderboard.getDefaultCourseArea() != null && leaderboard.getDefaultCourseArea().equals(courseArea)) {
+                            String regattaDisplayName = leaderboard.getDisplayName();
+                            for (RaceColumn raceColumn : leaderboard.getRaceColumns()) {
+                                for (Fleet fleet : raceColumn.getFleets()) {
+                                    JSONObject raceStateJson = createRaceStateJsonObject(raceColumn, fleet);
+                                    raceStateJson.put("courseAreaName", courseArea.getName());
+                                    raceStateJson.put("regattaName", regattaDisplayName);
+                                    raceStatesLogEntriesJson.add(raceStateJson);
+                                }
+                            }
+                        }
+                    }
+                }
+
+                setJsonResponseHeader(response);
+                result.writeJSONString(response.getWriter());
+            }
+        }
+    }
+    
+    private JSONObject createRaceStateJsonObject(RaceColumn raceColumn, Fleet fleet) {
+        JSONObject result = new JSONObject();
+
+        result.put("raceName", raceColumn.getName());
+        result.put("fleetName", fleet.getName());
+        RaceIdentifier raceIdentifier = raceColumn.getRaceIdentifier(fleet);
+        result.put("trackedRaceId", raceIdentifier != null ? raceIdentifier.toString() : null);
+
+        RaceLog raceLog = raceColumn.getRaceLog(fleet);
+        if (raceLog != null && !raceLog.isEmpty()) {
+            JSONObject raceLogStateJson = new JSONObject();
+            result.put("raceState", raceLogStateJson);
+
+            StartTimeFinder startTimeFinder = new StartTimeFinder(raceLog);
+            raceLogStateJson.put("startTime", startTimeFinder.getStartTime() != null ? startTimeFinder.getStartTime().toString() : null);
+
+            RaceStatusAnalyzer raceStatusAnalyzer = new RaceStatusAnalyzer(raceLog);
+            raceLogStateJson.put("lastStatus", raceStatusAnalyzer.getStatus().name());
+
+            PathfinderFinder pathfinderFinder = new PathfinderFinder(raceLog);
+            raceLogStateJson.put("pathfinderId", pathfinderFinder.getPathfinderId());
+
+            GateLineOpeningTimeFinder gateLineOpeningTimeFinder = new GateLineOpeningTimeFinder(raceLog);
+            raceLogStateJson.put("gateLineOpeningTime", gateLineOpeningTimeFinder.getGateLineOpeningTime());
+
+            LastFlagFinder lastFlagFinder = new LastFlagFinder(raceLog);
+            RaceLogFlagEvent lastFlagEvent = lastFlagFinder.getLastFlagEvent();
+            if (lastFlagEvent != null) {
+                raceLogStateJson.put("lastUpperFlag", lastFlagEvent.getUpperFlag().name());
+                raceLogStateJson.put("lastLowerFlag", lastFlagEvent.getLowerFlag().name());
+                raceLogStateJson.put("displayed", lastFlagEvent.isDisplayed());
+            } else {
+                raceLogStateJson.put("lastUpperFlag", null);
+                raceLogStateJson.put("lastLowerFlag", null);
+                raceLogStateJson.put("displayed", null);
+            }
+        }
+        
+        return result;
+    }
+
+    private UUID convertIdentifierStringToUuid(String identifierToConvert) {
+        UUID result = null;
+        if (identifierToConvert != null) {
+            try {
+                result = UUID.fromString(identifierToConvert);
+            } catch (IllegalArgumentException iae) {
+            }
+        }
+        return result;
+    }
+}