Finished team parser to read team info from external xml file

- created team parser unit test
- refactored team parser functions

#fix #refactor #implement

doc/examples/teams.xml

@@ -3,12 +3,32 @@
 <teams>
     <team>
         <name>Oracle Team USA</name>
-        <alais>USA</alais>
+        <alias>USA</alias>
-        <speed>23.4</speed>
+        <velocity>23.4</velocity>
+    </team>
+    <team>
+        <name>Artemis Racing</name>
+        <alias>ART</alias>
+        <velocity>12.9</velocity>
     </team>
     <team>
         <name>Emirates Team New Zealand</name>
-        <alais>NZL</alais>
+        <alias>NZL</alias>
-        <speed>25.2</speed>
+        <velocity>25.2</velocity>
+    </team>
+    <team>
+        <name>Land Rover BAR</name>
+        <alias>BAR</alias>
+        <velocity>16.4</velocity>
+    </team>
+    <team>
+        <name>SoftBank Team Japan</name>
+        <alias>JAP</alias>
+        <velocity>19.22</velocity>
+    </team>
+    <team>
+        <name>Groupama Team France</name>
+        <alias>FRC</alias>
+        <velocity>28.8</velocity>
     </team>
 </teams>

src/main/java/seng302/models/parsers/TeamsParser.java

@@ -0,0 +1,63 @@
+package seng302.models.parsers;
+
+import org.w3c.dom.*;
+import seng302.models.Boat;
+
+import java.util.ArrayList;
+import java.util.NoSuchElementException;
+
+public class TeamsParser extends FileParser {
+
+	private Document doc;
+
+	public TeamsParser(String path) {
+		super(path);
+		this.doc = this.parseFile();
+	}
+
+	/**
+	 * Create a boat instance by a given team node
+	 * @param node a boat node containing name, alias and velocity
+	 * @return an instance of Boat
+	 */
+	private Boat parseBoat(Node node) {
+		try {
+			if (node.getNodeType() == Node.ELEMENT_NODE) {
+				Element element = (Element) node;
+				String name = element.getElementsByTagName("name").item(0).getTextContent();
+				String alias = element.getElementsByTagName("alias").item(0).getTextContent();
+				double velocity = Double.valueOf(element.getElementsByTagName("velocity").item(0).getTextContent());
+				Boat boat = new Boat(name, velocity);
+				return boat;
+			} else {
+				throw new NoSuchElementException("Cannot generate a boat by given node");
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+	/**
+	 * Create an arraylist of boats instance.
+	 * @return an arraylist of boats in teams file
+	 */
+	public ArrayList<Boat> getBoats() {
+		ArrayList<Boat> boats = new ArrayList<>();
+		try {
+			NodeList nodes = this.doc.getElementsByTagName("team");
+			for (int i = 0; i < nodes.getLength(); i++) {
+				Node node = nodes.item(i);
+
+				boats.add(parseBoat(node));
+			}
+			return boats;
+		} catch (Exception e) {
+			e.printStackTrace();
+			return null;
+		}
+	}
+
+
+}
+

src/main/java/seng302/models/parsers/teamsParser.java

@@ -1,11 +0,0 @@
-package seng302.models.parsers;
-
-public class teamsParser extends FileParser {
-
-	public teamsParser(String path) {
-		super(path);
-	}
-
-
-}
-

src/test/java/seng302/models/parsers/TeamsParserTest.java

@@ -0,0 +1,35 @@
+package seng302.models.parsers;
+
+import org.junit.Before;
+import org.junit.Test;
+import seng302.models.Boat;
+
+import java.util.ArrayList;
+
+import static org.junit.Assert.*;
+
+/**
+ * Created by Haoming on 18/03/17.
+ */
+public class TeamsParserTest {
+
+	private TeamsParser tp;
+	@Before
+	public void readFile() {
+		tp = new TeamsParser("doc/examples/teams.xml");
+	}
+
+	@Test
+	public void getBoats() throws Exception {
+		ArrayList<Boat> boats = tp.getBoats();
+
+		assertEquals(6, boats.size(), 1e-10);
+
+		assertEquals("Oracle Team USA", boats.get(0).getTeamName());
+		assertEquals(23.4, boats.get(0).getVelocity(), 1e-10);
+
+		assertEquals("Groupama Team France", boats.get(5).getTeamName());
+		assertEquals(28.8, boats.get(5).getVelocity(), 1e-10);
+	}
+
+}