Fixed #79

rest is not calculated if database doesn't contain at least one normal
and one repeating payment

src/de/deadlocker8/budgetmasterserver/main/DatabaseHandler.java

@@ -55,10 +55,18 @@ public class DatabaseHandler
 			ResultSet rs = stmt.executeQuery(query);
 
 			while(rs.next())
+			{
+				String min = rs.getString("min");
+				if(min == null)
+				{
+					dateTime = null;
+				}
+				else
 				{
 					dateTime = formatter.parseDateTime(rs.getString("min"));
 				}
 			}
+		}
 		catch(SQLException e)
 		{
 			Logger.error(e);
@@ -91,10 +99,18 @@ public class DatabaseHandler
 			ResultSet rs = stmt.executeQuery(query);
 
 			while(rs.next())
+			{
+				String min = rs.getString("min");
+				if(min == null)
+				{
+					dateTime = null;
+				}
+				else
 				{
 					dateTime = formatter.parseDateTime(rs.getString("min"));
 				}
 			}
+		}
 		catch(SQLException e)
 		{
 			Logger.error(e);
@@ -118,8 +134,20 @@ public class DatabaseHandler
 
 	public int getRestForAllPreviousMonths(int year, int month)
 	{		
+		DateTimeFormatter formatter = DateTimeFormat.forPattern("MM.yyyy");
+		String dateString = String.valueOf(month) + "." + year;
+		DateTime currentDate = formatter.parseDateTime(dateString);		
+		
 		DateTime firstNormalPaymentDate = getFirstNormalPaymentDate();
+		if(firstNormalPaymentDate == null)
+		{
+			firstNormalPaymentDate = currentDate;
+		}
 		DateTime firstRepeatingPaymentDate = getFirstRepeatingPaymentDate();
+		if(firstRepeatingPaymentDate == null)
+		{
+			firstRepeatingPaymentDate = currentDate;
+		}
 		
 		DateTime firstDate = firstNormalPaymentDate;
 		if(firstRepeatingPaymentDate.isBefore(firstNormalPaymentDate))
@@ -127,10 +155,6 @@ public class DatabaseHandler
 			firstDate = firstRepeatingPaymentDate;
 		}	
 	
-		DateTimeFormatter formatter = DateTimeFormat.forPattern("MM.yyyy");
-		String dateString = String.valueOf(month) + "." + year;
-		DateTime currentDate = formatter.parseDateTime(dateString);//	
-	
 		if(firstDate.isAfter(currentDate))
 		{
 			return 0;