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UmlsSocket.java
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UmlsSocket.java
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package com.machine.learning.socket;
import java.io.IOException;
import java.util.List;
import javax.websocket.OnClose;
import javax.websocket.OnError;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import org.apache.log4j.Logger;
import com.google.gson.Gson;
import com.learningmodule.association.conceptdrug.PredictionResult;
import com.machine.learning.LearningModulesPool;
import com.machine.learning.request.Request;
import com.machine.learning.request.SearchQueryRequest;
import com.umls.search.DiseaseToDrugPrediction;
/*
* class that implement the socket interface for umls Learning Module
*/
@ServerEndpoint(value = "/ml/umls")
public class UmlsSocket {
private Gson gson = new Gson();
private static Logger log = Logger.getLogger(UmlsSocket.class);
private Session session;
@OnOpen
public void start(Session session) {
this.session = session;
}
@OnClose
public void end() {
}
/*
* Method that is invoked when there is msg from client input from client
* for querying should be of form "query:<search string>"
*/
@OnMessage
public void onMsg(String query) {
System.out.println(query);
Request req = gson.fromJson(query, Request.class);
if (req.getSearchRequest() != null) {
// send the results to client for search string
sendResults(req.getSearchRequest());
}
}
public void sendResults(SearchQueryRequest query) {
try {
// get the predicitions, convert the results into Json String and
// send to the client
session.getBasicRemote()
.sendText(
getJson(DiseaseToDrugPrediction.predict(query.getQuery(),
query.getFeatures())));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
@OnError
public void onError(Throwable t) throws Throwable {
t.printStackTrace();
}
// method to convert the results into Json string;
private String getJson(Object list) {
String result = gson.toJson(list);
System.out.println(result);
log.debug(result);
return result;
}
}