Serialization code for basic events

Integration in servlets

java/com.sap.sailing.server.gateway.serialization/src/com/sap/sailing/server/gateway/serialization/RaceCommitteeEventSerializer.java

@@ -0,0 +1,18 @@
+package com.sap.sailing.server.gateway.serialization;
+
+import org.json.simple.JSONObject;
+
+import com.sap.sailing.domain.racecommittee.RaceCommitteeEvent;
+
+public class RaceCommitteeEventSerializer implements JsonSerializer<RaceCommitteeEvent> {
+
+	@Override
+	public JSONObject serialize(RaceCommitteeEvent object) {
+		JSONObject result = new JSONObject();
+		result.put("id", object.getId().toString());
+		result.put("timestamp", object.getTimePoint().asMillis());
+		result.put("passId", object.getPassId());
+		return result;
+	}
+
+}

java/com.sap.sailing.server.gateway.serialization/src/com/sap/sailing/server/gateway/serialization/RaceCommitteeEventSerializerFactory.java

@@ -0,0 +1,28 @@
+package com.sap.sailing.server.gateway.serialization;
+
+import com.sap.sailing.domain.racecommittee.RaceCommitteeEvent;
+import com.sap.sailing.domain.racecommittee.RaceCommitteeFlagEvent;
+import com.sap.sailing.domain.racecommittee.RaceCommitteeStartTimeEvent;
+
+public class RaceCommitteeEventSerializerFactory {
+	
+	private JsonSerializer<RaceCommitteeEvent> baseEventSerializer;
+	
+	public RaceCommitteeEventSerializerFactory() {
+		this.baseEventSerializer = new RaceCommitteeEventSerializer();
+	}
+	
+	public JsonSerializer<RaceCommitteeEvent> getSerializer(RaceCommitteeEvent event) {
+		if (event instanceof RaceCommitteeFlagEvent) {
+			return new RaceCommitteeFlagEventSerializer(baseEventSerializer);
+		}
+		if (event instanceof RaceCommitteeStartTimeEvent) {
+			return new RaceCommitteeStartTimeEventSerializer(baseEventSerializer);
+		}
+		throw new UnsupportedOperationException(
+				String.format(
+						"There is no serializer defined for event type %s", 
+						event.getClass().getName()));
+	}
+	
+}

java/com.sap.sailing.server.gateway.serialization/src/com/sap/sailing/server/gateway/serialization/RaceCommitteeFlagEventSerializer.java

@@ -0,0 +1,32 @@
+package com.sap.sailing.server.gateway.serialization;
+
+import org.json.simple.JSONObject;
+
+import com.sap.sailing.domain.racecommittee.RaceCommitteeEvent;
+import com.sap.sailing.domain.racecommittee.RaceCommitteeFlagEvent;
+
+/**
+ * Implements JsonSerializer<RaceCommitteeEvent> to enable a consistent interface when used
+ * with {@link RaceCommitteeEventSerializerFactory}, see type-safeness of generics.
+ */
+public class RaceCommitteeFlagEventSerializer implements JsonSerializer<RaceCommitteeEvent> {
+
+	private JsonSerializer<RaceCommitteeEvent> baseSerializer;
+	
+	public RaceCommitteeFlagEventSerializer(JsonSerializer<RaceCommitteeEvent> baseSerializer) {
+		this.baseSerializer = baseSerializer;
+	}
+	
+	@Override
+	public JSONObject serialize(RaceCommitteeEvent object) {
+		// We have to cast here, see class comment
+		RaceCommitteeFlagEvent flagEvent = (RaceCommitteeFlagEvent) object;
+		
+		JSONObject result = baseSerializer.serialize(flagEvent);
+		result.put("upperFlag", flagEvent.getUpperFlag());
+		result.put("lowerFlag", flagEvent.getLowerFlag());
+		result.put("displayed", flagEvent.isDisplayed());
+		return result;
+	}
+
+}

java/com.sap.sailing.server.gateway.serialization/src/com/sap/sailing/server/gateway/serialization/RaceCommitteeStartTimeEventSerializer.java

@@ -0,0 +1,29 @@
+package com.sap.sailing.server.gateway.serialization;
+
+import org.json.simple.JSONObject;
+import com.sap.sailing.domain.racecommittee.RaceCommitteeEvent;
+import com.sap.sailing.domain.racecommittee.RaceCommitteeStartTimeEvent;
+
+/**
+ * Implements JsonSerializer<RaceCommitteeEvent> to enable a consistent interface when used
+ * with {@link RaceCommitteeEventSerializerFactory}, see type-safeness of generics.
+ */
+public class RaceCommitteeStartTimeEventSerializer implements JsonSerializer<RaceCommitteeEvent> {
+
+	private JsonSerializer<RaceCommitteeEvent> baseSerializer;
+	
+	public RaceCommitteeStartTimeEventSerializer(JsonSerializer<RaceCommitteeEvent> baseSerializer) {
+		this.baseSerializer = baseSerializer;
+	}
+	
+	@Override
+	public JSONObject serialize(RaceCommitteeEvent object) {
+		// We have to cast here, see class comment
+		RaceCommitteeStartTimeEvent startTimeEvent = (RaceCommitteeStartTimeEvent) object;
+		
+		JSONObject result = baseSerializer.serialize(startTimeEvent);
+		result.put("startTime", startTimeEvent.getStartTime().asMillis());
+		return result;
+	}
+
+}