More StackOverFlow posts / recommendations

[phkrief]

Hi, Would it be possible to list more SOF posts? For example, we could specify in the preference the max amount of results.

Thanks

[creat89]

Which recommender are you using?

[phkrief]

Actually, I realize that I don't get the same posts depending on the code. You will say, "Of course!" Unfortunately, for our example, it is a shame.

For example if I ask recommendations on this code:

package openweather.json_simple;

import java.io.IOException;

import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException;

public class App {

static String OpenWeathermapAPI = "http://api.openweathermap.org/data/2.5/weather?q={city}&appid=abbcea2020f75409af198b98de40e3a6";
public static void main(String[] args) throws IOException, ParseException {
    // Parsing of the API result
    JSONParser parser = new JSONParser();
}

}

I don't get the same posts if I add before the code about the URL access:

============= package openweather.json_simple;

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL;

import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException;

public class App {

static String OpenWeathermapAPI = "http://api.openweathermap.org/data/2.5/weather?q={city}&appid=abbcea2020f75409af198b98de40e3a6";

public static void main(String[] args) throws IOException, ParseException {
    // Creation of the REST API
    String city = (args.length != 0)? args[0]:"Toulouse";
    String restAPI = OpenWeathermapAPI.replace("{city}", city);
    URL url = new URL(restAPI);
    // Access to the  REST API
    HttpURLConnection con = (HttpURLConnection) url.openConnection();
    con.setRequestMethod("GET");
    con.setConnectTimeout(5000);
    con.setReadTimeout(5000);
    int status = con.getResponseCode();
    if (status == HttpURLConnection.HTTP_OK) {
        BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream()));
        try {
            // Parsing of the API result
            JSONParser parser = new JSONParser();
            JSONObject jsonObject = (JSONObject) parser.parse(in);
        } finally {
            in.close();
        }
    }
}

}

[creat89]

Yes, I got it. But which recommender are you using? The KB has multiple recommenders and only four are created by us, all of them called CROSSIndex (there is one for Java, C, PHP and JavaScript). If you're using other recommenders, those are created by UDA and they are not connected to the Indexes that we generate. UDA decided to create their own indexes with specific dumps of data.

[phkrief]

Oh?! In the present case, I'm calling the recommender used by the Eclipse Plugin when you select the item: "Request API documentation and Q&A posts". Thx

[creat89]

That's a UDA recommender, so I cannot help you. I'll put Juri as the assigned to the issue.

[davidediruscio]

Yes, that is how SORec works. The import statements also have a role in the selection of SO posts.

Sent with something mobile

---

From: Philippe Krief notifications@github.com Sent: Saturday, November 23, 2019 8:50:27 PM To: crossminer/scava scava@noreply.github.com Cc: Subscribed subscribed@noreply.github.com Subject: Re: [crossminer/scava] More StackOverFlow posts / recommendations (#432)

Actually, I realize that I don't get the same posts depending on the code. You will say, "Of course!" Unfortunately, for our example, it is a shame.

For example if I ask recommendations on this code:

package openweather.json_simple;

import java.io.IOException;

import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException;

public class App {

static String OpenWeathermapAPI = "http://api.openweathermap.org/data/2.5/weather?q={city}&appid=abbcea2020f75409af198b98de40e3a6"; public static void main(String[] args) throws IOException, ParseException { // Parsing of the API result JSONParser parser = new JSONParser(); }

}

I don't get the same posts if I add before the code about the URL access:

============= package openweather.json_simple;

import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.net.HttpURLConnection; import java.net.URL;

import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException;

public class App {

static String OpenWeathermapAPI = "http://api.openweathermap.org/data/2.5/weather?q={city}&appid=abbcea2020f75409af198b98de40e3a6";

public static void main(String[] args) throws IOException, ParseException { // Creation of the REST API String city = (args.length != 0)? args[0]:"Toulouse"; String restAPI = OpenWeathermapAPI.replace("{city}", city); URL url = new URL(restAPI); // Access to the REST API HttpURLConnection con = (HttpURLConnection) url.openConnection(); con.setRequestMethod("GET"); con.setConnectTimeout(5000); con.setReadTimeout(5000); int status = con.getResponseCode(); if (status == HttpURLConnection.HTTP_OK) { BufferedReader in = new BufferedReader(new InputStreamReader(con.getInputStream())); try { // Parsing of the API result JSONParser parser = new JSONParser(); JSONObject jsonObject = (JSONObject) parser.parse(in); } finally { in.close(); } } }

}

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[phkrief]

@davidediruscio do you mean that StackOverFlow API provides only the 5 first posts of a request? Thanks

[creat89]

None of the recommenders is connected to StackOverflow API. All, including ours, make use of dumps. I'm sure Davide was referring to other stuff.

[phkrief]

Hi @creat89 , do you mean that the StackOverFlow posts we get come from our KB? If not fro where do they come from if they don't come from a StackOverFlow API? I don't understand what you mean by "dumps"

[creat89]

Yes, the SO posts come from files that have been processed and indexed by the KB. The KB doesn't connect itself to StackOverflow servers.

And I refer to dumps to the file that every three months more or less the owners of Stack Overflow publish (a huge XML file that contains all the information from SO https://archive.org/details/stackexchange).

[davidediruscio]

Hi Philippe, If you interested in how SORec works internally to produce recommendations, you can refer to chap 7 of D6.5.

[phkrief]

Thx a lot @davidediruscio. I should have done that first, you are right. So I check out the chapter 7 and discovered the Figure 23: The SOrec architecture. I didn't realize/understand that we were filtering, analysing and indexing StackOverFlow. Thx a lot for pointing that. It clarifies things

[phkrief]

So, let's come back to my initial demand. With this information, I don't understand your comment "Yes, that is how SORec works. The import statements also have a role in the selection of SO posts." Are we limited by the number of results? Thx

[davidediruscio]

Hi @phkrief we intentionally limited the results to the most 5 relevant posts. Indeed, we could add more in the results. However, let's keep the possibility of specifying the size of the results as a nice to have feature for the moment. Does it make sense?

[jdirocco]

The number of so results can be set in the configuration file. please have a look at https://github.com/crossminer/scava-deployment/blob/c4e9501f8758ebd47773fce552b487819eaa3d2c/KB/application.properties#L23

[davidediruscio]

@md2manoppello sure I know, but to allow end-users to change that parameter from the Eclipse IDE some more work is needed, which is in my opinion of not high priority for now.

[phkrief]

yes, @davidediruscio and @md2manoppello , it works for me. And I already identified as an enhancement. For me an 'enhancement" means 'nice to have'. Are you OK with that?