Toggling TeamDeletion with TeamDeleted bit for database integrity

src/de/steamwar/bungeecore/sql/Team.java

@@ -56,13 +56,13 @@ public class Team {
         for(Team team : teamCache)
             if(team.teamKuerzel.equalsIgnoreCase(name))
                 return team;
-        return load(select("SELECT * FROM Team WHERE lower(TeamName) = '" + SQL.disarmString(name).toLowerCase() + "' OR lower(TeamKuerzel) = '" + SQL.disarmString(name).toLowerCase() + "'"));
+        return load(select("SELECT * FROM Team WHERE (lower(TeamName) = '" + SQL.disarmString(name).toLowerCase() + "' OR lower(TeamKuerzel) = '" + SQL.disarmString(name).toLowerCase() + "') AND NOT TeamDeleted"));
     }
 
     public static List<Team> getAll(){
         clearCache();
         try{
-            ResultSet rs = select("SELECT * FROM Team WHERE TeamID > 0");
+            ResultSet rs = select("SELECT * FROM Team WHERE NOT TeamDeleted");
             if(rs == null)
                 return teamCache;
 
@@ -141,7 +141,7 @@ public class Team {
     }
 
     public void disband(){
-        SQL.update("DELETE FROM Team WHERE TeamID = " + teamId);
+        SQL.update("UPDATE Team SET TeamDeleted = 1, TeamLeader = NULL WHERE TeamID = " + teamId);
         teamCache.remove(this);
     }