public void register(MsgHandler handler) {
if (handler == null) {
throw new IllegalArgumentException("register handler cannot be null");
}
int[] interests = handler.getInterests();
if (interests != null) {
for (Integer interest : interests) {
Set<MsgHandler> msgHandlers = handlers.get(interest);
if (msgHandlers == null) {
CopyOnWriteArraySet<MsgHandler> created = new CopyOnWriteArraySet<>();
msgHandlers = handlers.putIfAbsent(interest, msgHandlers);
if (msgHandlers == null) {
msgHandlers = created;
}
}
msgHandlers.add(handler);
}
for (Integer interest : interests) {
Msg msg = stickyMsg.get(interest);
if (msg != null) {
handler.onMsg(msg);
}
}
} else {
throw new IllegalArgumentException("register handler which has no interest");
}
}
private void post(Msg msg, boolean stick) {
Integer what = msg.what();
Set<MsgHandler> msgHandlers = handlers.get(what);
if (msgHandlers != null && !msgHandlers.isEmpty()) {
for (MsgHandler h : msgHandlers) {
h.onMsg(msg);
}
} else {
if (!stick) {
logger.warning("post: dead event: " + msg);
}
}
if (stick) {
stickyMsg.put(what, msg);
}
}
public void unregister(MsgHandler handler) {
if (handler == null) {
throw new IllegalArgumentException("unregister handler cannot be null");
}
int[] interests = handler.getInterests();
if (interests == null) {
for (Integer interest : interests) {
Set<MsgHandler> msgHandlers = handlers.get(interest);
if (msgHandlers != null) {
msgHandlers.remove(handler);
}
}
} else {
throw new IllegalArgumentException("unregister handler which has no interest");
}
}
// Stores current term to database
public void storeTerm() {
try {
Connection conn = DriverManager.getConnection(URL, USER, PASSWORD);
String insertTerm =
"INSERT INTO term (tID,lname,fname,loc,ext,mgr,ACT,"
+ "termD,serial,model,note) "
+ "VALUES (?,?,?,?,?,?,?,?,?,?,?)";
PreparedStatement ps = conn.prepareStatement(insertTerm);
ps.setInt(1, gettID());
ps.setString(2, getLname());
ps.setString(3, getFname());
ps.setString(4, getLoc());
ps.setString(5, getExt());
ps.setString(6, getMgr());
ps.setString(7, getACT());
ps.setString(8, getTermD());
ps.setString(9, getSerial());
ps.setString(10, getModel());
ps.setString(11, getNote());
ps.executeUpdate();
} catch (SQLException ex) {
MsgHandler.setErrMsg("Error writing to db: ", ex);
}
}
