Introduced course export servlet to be called by the app

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

@@ -41,6 +41,15 @@
 		<url-pattern>/rc/marks</url-pattern>
 	</servlet-mapping>
 	
+	<servlet>
+		<servlet-name>RCCurrentCourse</servlet-name>
+		<servlet-class>com.sap.sailing.server.gateway.impl.rc.CourseJsonExportServlet</servlet-class>
+	</servlet>
+	<servlet-mapping>
+		<servlet-name>RCCurrentCourse</servlet-name>
+		<url-pattern>/rc/currentcourse</url-pattern>
+	</servlet-mapping>
+	
 	<!-- RACE COMMITTEE END -->
 
 	<servlet>

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

@@ -0,0 +1,96 @@
+package com.sap.sailing.server.gateway.impl.rc;
+
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.json.simple.JSONObject;
+
+import com.sap.sailing.domain.base.Course;
+import com.sap.sailing.domain.base.Fleet;
+import com.sap.sailing.domain.base.RaceColumn;
+import com.sap.sailing.domain.leaderboard.Leaderboard;
+import com.sap.sailing.domain.tracking.TrackedRace;
+import com.sap.sailing.server.RacingEventService;
+import com.sap.sailing.server.gateway.AbstractJsonHttpServlet;
+import com.sap.sailing.server.gateway.serialization.coursedata.impl.ControlPointJsonSerializer;
+import com.sap.sailing.server.gateway.serialization.coursedata.impl.CourseBaseJsonSerializer;
+import com.sap.sailing.server.gateway.serialization.coursedata.impl.GateJsonSerializer;
+import com.sap.sailing.server.gateway.serialization.coursedata.impl.MarkJsonSerializer;
+import com.sap.sailing.server.gateway.serialization.coursedata.impl.WaypointJsonSerializer;
+
+public class CourseJsonExportServlet extends AbstractJsonHttpServlet {
+
+    private static final long serialVersionUID = -6604797426439916738L;
+    
+    public static final String PARAMS_LEADERBOARD_NAME = "leaderboard";
+    public static final String PARAMS_RACE_COLUMN_NAME = "raceColumn";
+    public static final String PARAMS_RACE_FLEET_NAME = "fleet";
+
+    @Override
+    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
+
+        String leaderboardName = request.getParameter(PARAMS_LEADERBOARD_NAME);
+        if (leaderboardName == null) {
+            response.sendError(HttpServletResponse.SC_BAD_REQUEST,
+                    String.format("Missing parameter '%s'.", PARAMS_LEADERBOARD_NAME));
+            return;
+        }
+
+        String raceColumnName = request.getParameter(PARAMS_RACE_COLUMN_NAME);
+        if (raceColumnName == null) {
+            response.sendError(HttpServletResponse.SC_BAD_REQUEST,
+                    String.format("Missing parameter '%s'.", PARAMS_RACE_COLUMN_NAME));
+            return;
+        }
+        
+        String fleetName = request.getParameter(PARAMS_RACE_FLEET_NAME);
+        if (fleetName == null) {
+            response.sendError(HttpServletResponse.SC_BAD_REQUEST,
+                    String.format("Missing parameter '%s'.", PARAMS_RACE_FLEET_NAME));
+            return;
+        }
+        
+        RacingEventService service = getService();
+
+        Leaderboard leaderboard = service.getLeaderboardByName(leaderboardName);
+        if (leaderboard == null) {
+            response.sendError(HttpServletResponse.SC_NOT_FOUND, "No such leaderboard found.");
+            return;
+        }
+
+        RaceColumn raceColumn = leaderboard.getRaceColumnByName(raceColumnName);
+        if (raceColumn == null) {
+            response.sendError(HttpServletResponse.SC_NOT_FOUND, "No such race column found.");
+            return;
+        }
+        
+        Fleet fleet = raceColumn.getFleetByName(fleetName);
+        if (fleet == null) {
+            response.sendError(HttpServletResponse.SC_NOT_FOUND, "No such fleet found.");
+            return;
+        }
+
+        TrackedRace trackedRace = raceColumn.getTrackedRace(fleet);
+       
+        JSONObject result;
+        
+        if (trackedRace != null) {
+            Course course = raceColumn.getRaceDefinition(fleet).getCourse();
+            CourseBaseJsonSerializer serializer = new CourseBaseJsonSerializer(
+                    new WaypointJsonSerializer(
+                            new ControlPointJsonSerializer(
+                                    new MarkJsonSerializer(),
+                                    new GateJsonSerializer(new MarkJsonSerializer()))));
+
+            result = serializer.serialize(course);
+        } else {
+            result = new JSONObject();
+        }
+        
+        result.writeJSONString(response.getWriter());
+        response.setContentType("application/json");
+    }
+}