public static void main(String[] args)
throws InstantiationException, IllegalAccessException, ClassNotFoundException, SQLException {
DOMConfigurator.configure("logger.xml");
Configuration conf = new Configuration();
conf.configure(new File("configuation.xml"));
conf.getEngineDefaults().getThreading().setListenerDispatchPreserveOrder(false);
conf.addEventTypeAutoName(Main.class.getPackage().getName());
init(conf);
EPServiceProvider epService = EPServiceProviderManager.getDefaultProvider(conf);
String statement = "CREATE WINDOW trainSet.win:length(1000) as select * from InputTuple";
epService.getEPAdministrator().createEPL(statement);
statement = "INSERT INTO trainSet SELECT * FROM InputTuple";
epService.getEPAdministrator().createEPL(statement);
////////// TASK 1. Performing Naive Bayes Classification over a data stream
StreamClassifier classifier = new StreamClassifier(conf);
classifier.verticalizeTuples(_fieldNames);
EPStatement stmt = classifier.run(_fieldNames.length + 1);
/////////// TASK 2. Periodically check quality of the classifier
PeriodicChecker checker = new PeriodicChecker(conf, stmt);
checker.run(
"2 seconds", 100, 0.9); // every two seconds test last 100 tuples to satisfy threshold 0.7
//////////
_log.info("started");
// emulate a continuous input
AdapterInputSource adapterInputSource = new AdapterInputSource(new File("simulation.csv"));
CSVInputAdapterSpec spec = new CSVInputAdapterSpec(adapterInputSource, "InputTuple");
spec.setEventsPerSec(400);
spec.setLooping(true);
spec.setUsingEngineThread(true);
(new CSVInputAdapter(epService, spec)).start();
try {
Thread.sleep(10000);
} catch (InterruptedException e) {
e.printStackTrace();
}
_log.info("stopped");
}
public void afterPropertiesSet() throws Exception {
Assert.hasText(eventTypePackageName, "eventTypePackageName is must be specified");
Assert.notEmpty(statement, "statement is empty");
configuration = new Configuration();
configuration.addEventTypeAutoName(eventTypePackageName);
_instance = EPServiceProviderManager.getDefaultProvider(configuration);
for (EPStatementContext stmt : statement) {
final String epl = stmt.epl();
log.info("EPL: {}", epl);
EPStatement epstmt = _instance.getEPAdministrator().createEPL(epl);
if (null != stmt.subscriber()) {
epstmt.setSubscriber(stmt.subscriber());
}
if (null != stmt.listeners()) {
for (Object listener : stmt.listeners()) {
if (!(listener instanceof StatementAwareUpdateListener)
&& !(listener instanceof UpdateListener)) {
throw new IllegalStateException("statement listener illegal");
}
if (listener instanceof StatementAwareUpdateListener) {
epstmt.addListener((StatementAwareUpdateListener) listener);
}
if (listener instanceof UpdateListener) {
epstmt.addListener((UpdateListener) listener);
}
/*
* TODO: support addListenerWithReply
*/
// epstmt.addListenerWithReplay((UpdateListener)listener);
}
}
}
}
@Override
public void addEventTypeAutoName(String packageName) {
m_esperconfig.addEventTypeAutoName(packageName);
}