Fixed issues caused by merge.

#bug

src/main/java/seng302/model/mark/MarkOrder.java

@@ -0,0 +1,114 @@
+package seng302.model.mark;
+
+import java.io.IOException;
+import java.io.StringReader;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.Document;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import seng302.model.stream.xml.generator.Race;
+import seng302.model.stream.xml.parser.RaceXMLData;
+import seng302.utilities.XMLGenerator;
+import seng302.utilities.XMLParser;
+
+/**
+ * Class to hold the order of the marks in the race.
+ */
+public class MarkOrder {
+    private List<CompoundMark> raceMarkOrder;
+    private Logger logger = LoggerFactory.getLogger(MarkOrder.class);
+
+    public MarkOrder(){
+        loadRaceProperties();
+    }
+
+    /**
+     * @return An ordered list of marks in the race
+     *         OR null if the mark order could not be loaded
+     */
+    public List<CompoundMark> getMarkOrder(){
+        if (raceMarkOrder == null){
+            logger.warn("Race order accessed but not instantiated");
+            return null;
+        }
+
+        return Collections.unmodifiableList(raceMarkOrder);
+    }
+
+    /**
+     * Returns the mark in the race after the previous mark
+     * @param previous The previous mark
+     * @return the next mark
+     *         OR null if there is no next mark
+     */
+    public CompoundMark getNextMark(CompoundMark previous){
+        for (int i = 0; i < raceMarkOrder.size(); i++){
+            CompoundMark mark = raceMarkOrder.get(i);
+
+            if (i + 1 >= raceMarkOrder.size()){
+                return null;
+            }
+
+            if (mark.equals(previous)){
+                return raceMarkOrder.get(i+1);
+            }
+        }
+        return null;
+    }
+
+    /**
+     * Loads the race order from an XML string
+     * @param xml An AC35 RaceXML
+     * @return An ordered list of marks in the race
+     */
+    private List<CompoundMark> loadRaceOrderFromXML(String xml){
+
+        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
+        DocumentBuilder db;
+        Document doc;
+
+        try {
+            db = dbf.newDocumentBuilder();
+            doc = db.parse(new InputSource(new StringReader(xml)));
+        } catch (ParserConfigurationException | IOException | SAXException e) {
+            logger.error("Failed to read generated race XML");
+            return null;
+        }
+        
+        RaceXMLData data = XMLParser.parseRace(doc);
+
+        if (data != null){
+            logger.debug("Loaded RaceXML for mark order");
+            List<CompoundMark> course = new ArrayList<>(data.getCompoundMarks().values());
+            course.sort(Comparator.comparingInt(CompoundMark::getId));
+            return course;
+        }
+
+        return null;
+    }
+
+    /**
+     * Load the raceXML and mark order
+     */
+    private void loadRaceProperties(){
+        XMLGenerator generator = new XMLGenerator();
+
+        generator.setRace(new Race());
+
+        String raceXML = generator.getRaceAsXml();
+
+        if (raceXML == null){
+            logger.error("Failed to generate raceXML (for race properties)");
+            return;
+        }
+        raceMarkOrder = loadRaceOrderFromXML(raceXML);
+    }
+}