public static void sendMessage(final String selectedId, final String msg) {
final Collection<SSEWebSocket> instances = SSEWebSocketStorage.currentWSs();
for (SSEWebSocket webSocket : instances) {
String id = webSocket.getInitParameter(SSEWebSocket.ID_KEY);
if (id == null) {
final String[] urlPatterns = findUrlPatterns(webSocket);
if (urlPatterns != null) {
for (String pattern : urlPatterns) {
if (match(selectedId, pattern)) {
webSocket.sendMessage(msg);
break;
}
}
}
} else if (match(selectedId, id)) {
webSocket.sendMessage(msg);
}
}
}
private static String[] findUrlPatterns(final SSEWebSocket webSocket) {
final Class<?> clazz = webSocket.getClass();
final ClassLoader loader = clazz.getClassLoader();
final Map<Class<?>, String[]> clValues = getUrlPatternMap(loader);
String[] patterns = clValues.get(clazz);
if (patterns != null) {
return patterns;
}
final WebServlet webServlet = webSocket.getClass().getAnnotation(WebServlet.class);
if (webServlet == null) {
patterns = EMPTY_URL_PATTERN;
} else {
patterns = webServlet.urlPatterns();
}
clValues.put(clazz, patterns);
return patterns;
}