Added some exception handling.

src/de/sockenklaus/XmlStats/Datasource/BalancesDS.java

@@ -24,21 +24,22 @@ import com.nijikokun.register.payment.Methods;
 
 import de.sockenklaus.XmlStats.XmlStats;
 import de.sockenklaus.XmlStats.XmlStatsRegistry;
+import de.sockenklaus.XmlStats.Exceptions.XmlStatsException;
 
 /**
  * The Class MoneyDS.
  */
-public class MoneyDS extends Datasource {
+public class BalancesDS extends Datasource {
 
 	private ArrayList<String> allPlayers;
 	private XmlStats xmlstats;
 	
-	public MoneyDS(){
+	public BalancesDS(){
 		this.allPlayers = fetchAllPlayers();
 		this.xmlstats = (XmlStats)XmlStatsRegistry.get("xmlstats");
 	}
 	
-	public HashMap<String, Double> getBalances(){
+	public HashMap<String, Double> getBalances() throws XmlStatsException {
 		HashMap<String, Double> result = new HashMap<String, Double>();
 		
 		for (String playerName : allPlayers){
@@ -48,7 +49,7 @@ public class MoneyDS extends Datasource {
 		return result;
 	}
 	
-	public Double getBalance(String playerName){
+	public Double getBalance(String playerName) throws XmlStatsException {
 		Double result = 0.0;
 				
 		if (xmlstats.checkRegister()){
@@ -61,13 +62,11 @@ public class MoneyDS extends Datasource {
 				if (account != null){
 					result =  account.balance();
 				}
-				else XmlStats.LogWarn("The player \""+playerName+"\" has an account but it isn't valid. Bad data will return.");
+				else throw new XmlStatsException("The player \""+playerName+"\" has an account but it isn't valid.");
 			}
-			else XmlStats.LogWarn("The player \""+playerName+"\" doesn't have a bank account and this action will return bad data");
+			else throw new XmlStatsException("The player \""+playerName+"\" doesn't have a bank account.");
-		}
-		else {
-			XmlStats.LogError("Something went wrong! /user_balances.xml shouldn't be enabled but it's datasource was called! This will return bad results.");
 		}
+		else throw new XmlStatsException("Something went wrong! /user_balances.xml shouldn't be enabled but it's datasource was called!");
 		
 		return result;
 	}
@@ -76,7 +75,7 @@ public class MoneyDS extends Datasource {
 	 * @param list
 	 * @return
 	 */
-	public int getSum(List<String> list) {
+	public int getSum(List<String> list) throws XmlStatsException {
 		int result = 0;
 		
 		for(String playerName : list){

src/de/sockenklaus/XmlStats/Datasource/Datasource.java

@@ -18,7 +18,7 @@ import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
 
-import de.sockenklaus.XmlStats.Exceptions.UserNotFoundException;
+import de.sockenklaus.XmlStats.Exceptions.XmlStatsException;
 
 // TODO: Auto-generated Javadoc
 /**
@@ -52,13 +52,13 @@ public abstract class Datasource {
 		return fetchAllPlayers().contains(player);
 	}
 	
-	public static List<String> fetchValidUsers(List<String> list) throws UserNotFoundException{
+	public static List<String> fetchValidUsers(List<String> list) throws XmlStatsException{
 		ArrayList<String> output = new ArrayList<String>();
 		
 		for (String possibleUser : list){
 			if(Datasource.userExists(possibleUser)) output.add(possibleUser);
 		}
-		if(output.isEmpty()) throw new UserNotFoundException("No valid user has been found!");
+		if(output.isEmpty()) throw new XmlStatsException("No valid user has been found!");
 		else return output;
 	}
 }

src/de/sockenklaus/XmlStats/Exceptions/XmlStatsException.java

@@ -7,13 +7,13 @@ package de.sockenklaus.XmlStats.Exceptions;
  * @author socrates
  *
  */
-public class UserNotFoundException extends Exception {
+public class XmlStatsException extends Exception {
 	/**
 	 * 
 	 */
 	private static final long serialVersionUID = -6660078004710596491L;
 
-	public UserNotFoundException(String s){
+	public XmlStatsException(String s){
 		super(s);
 	}
 }

src/de/sockenklaus/XmlStats/Webserver.java

@@ -86,6 +86,7 @@ public class Webserver {
 	}
 	
 	protected void startRegister(){
+		XmlStats.LogDebug("Casting startRegister()");
 		if (this.isRunning() && xmlstats.checkRegister()){
 			server.createContext("/user_balances.xml", new UserBalances());
 			XmlStats.LogInfo("Register seems to be loaded correctly. Enabling /user_balances.xml");

src/de/sockenklaus/XmlStats/XmlStatsException.java

@@ -1,17 +0,0 @@
-/**
- * 
- */
-package de.sockenklaus.XmlStats;
-
-/**
- * @author socrates
- *
- */
-public class XmlStatsException extends Throwable {
-
-	/**
-	 * 
-	 */
-	private static final long serialVersionUID = 1L;
-
-}

src/de/sockenklaus/XmlStats/XmlWorkers/UserBalances.java

@@ -17,10 +17,12 @@ package de.sockenklaus.XmlStats.XmlWorkers;
 import java.util.List;
 import java.util.Map;
 
+import org.w3c.dom.DOMException;
 import org.w3c.dom.Element;
 
 import de.sockenklaus.XmlStats.XmlStats;
-import de.sockenklaus.XmlStats.Datasource.MoneyDS;
+import de.sockenklaus.XmlStats.Datasource.BalancesDS;
+import de.sockenklaus.XmlStats.Exceptions.XmlStatsException;
 
 // TODO: Auto-generated Javadoc
 /**
@@ -28,14 +30,14 @@ import de.sockenklaus.XmlStats.Datasource.MoneyDS;
  */
 public class UserBalances extends XmlWorker {
 
-	private MoneyDS moneyDS;
+	private BalancesDS moneyDS;
 	
 	public UserBalances(){
-		this.moneyDS = new MoneyDS();
+		this.moneyDS = new BalancesDS();
 	}
 	
 	
-	protected Element getUserXml(List<String> playerList, Map<String, List<String>> parameters){
+	protected Element getUserXml(List<String> playerList, Map<String, List<String>> parameters) throws XmlStatsException {
 
 		Element elem_users = this.doc.createElement("users");
 		elem_users.setAttribute("count", String.valueOf(playerList.size()));
@@ -55,12 +57,13 @@ public class UserBalances extends XmlWorker {
 	 * @see de.sockenklaus.XmlStats.XmlWorkers.XmlWorker#getXML(java.util.Map)
 	 */
 	@Override
-	public Element getXml(Map<String, List<String>> parameters) {
+	public Element getXml(Map<String, List<String>> parameters) throws XmlStatsException {
-		Element elem_error = this.doc.createElement("error");
+		/*Element elem_error = this.doc.createElement("error");
 		elem_error.setAttribute("code", "1");
 		elem_error.setTextContent("No data provided with this query!");
 		
-		return elem_error;
+		return elem_error;*/
+		throw new XmlStatsException("No data provided with this query!");
 	}
 
 
@@ -68,7 +71,7 @@ public class UserBalances extends XmlWorker {
 	 * @see de.sockenklaus.XmlStats.XmlWorkers.XmlWorker#getSumXml(java.util.List, java.util.Map)
 	 */
 	@Override
-	protected Element getSumXml(List<String> userList, Map<String, List<String>> parameters) {
+	protected Element getSumXml(List<String> userList, Map<String, List<String>> parameters) throws XmlStatsException {
 			
 		Element elem_sum = this.doc.createElement("sum");
 		Element elem_users = this.doc.createElement("users");

src/de/sockenklaus/XmlStats/XmlWorkers/XmlWorker.java

@@ -47,7 +47,7 @@ import com.sun.net.httpserver.HttpExchange;
 import de.sockenklaus.XmlStats.XmlStats;
 import de.sockenklaus.XmlStats.XmlStatsRegistry;
 import de.sockenklaus.XmlStats.Datasource.Datasource;
-import de.sockenklaus.XmlStats.Exceptions.UserNotFoundException;
+import de.sockenklaus.XmlStats.Exceptions.XmlStatsException;
 
 // TODO: Auto-generated Javadoc
 /**
@@ -151,7 +151,7 @@ public abstract class XmlWorker implements HttpHandler {
 				 * Build string from XML
 				 */
 			}
-			catch(UserNotFoundException e){
+			catch(XmlStatsException e){
 				root.setAttribute("status", "error");
 				root.appendChild(getTextElem("error", e.getMessage()));
 				
@@ -212,21 +212,21 @@ public abstract class XmlWorker implements HttpHandler {
 	 * @param parameters
 	 * @return
 	 */
-	protected abstract Element getXml(Map<String, List<String>> parameters);
+	protected abstract Element getXml(Map<String, List<String>> parameters) throws XmlStatsException;
 
 	/**
 	 * @param playerList
 	 * @param parameters
 	 * @return
 	 */
-	protected abstract Element getSumXml(List<String> playerList, Map<String, List<String>> parameters);
+	protected abstract Element getSumXml(List<String> playerList, Map<String, List<String>> parameters) throws XmlStatsException;
 
 	/**
 	 * @param playerList
 	 * @param parameters
 	 * @return
 	 */
-	protected abstract Element getUserXml(List<String> playerList, Map<String, List<String>> parameters);
+	protected abstract Element getUserXml(List<String> playerList, Map<String, List<String>> parameters) throws XmlStatsException;
 
 	/**
 	 * Parses the parameters.