Android Open Source - stack-overlook Stack Overflow Repository

• Back to App/simple  ↑

From Project

Back to project page stack-overlook.

License

The source code is released under:

MIT License

Java Source Code

package com.sambuo.stackoverlook.repositories;
// w w  w  . ja v  a 2  s .  c  o m
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

import com.sambuo.stackoverlook.entities.Answer;
import com.sambuo.stackoverlook.entities.Question;
import com.sambuo.stackoverlook.entities.User;
import com.sambuo.stackoverlook.utilities.Reducer;
import com.sambuo.stackoverlook.utilities.Utils;

/**
 * Class that manages data from Stackoverflow.com 
 * 
 * @author Jimmy Sambuo
 *
 */
public class StackOverflowRepository {
  
  private StackOverflowRepository() { }
  
  /**
   * Eager initialized singleton instance of the repository.
   */
  private static final StackOverflowRepository INSTANCE = new StackOverflowRepository();
  
  private Iterable<User> appSpecificUsersCache;
  
  /**
   * Gets a singleton instance of the repository.
   * 
   * @return The singleton instance
   */
  public static StackOverflowRepository getInstance() {
    return StackOverflowRepository.INSTANCE;
  }
  
  /**
   * Gets a set of users as predefined by the developer.
   * 
   * @return
   */
  public Iterable<User> getAppSpecificUsers() {
    if (this.appSpecificUsersCache == null) {
      String[] userIds = { "298575", "236398", "822", "115145", "246461", "244296", "501696", "1174526", "2820983" };
      this.appSpecificUsersCache = this.getUsersFromIds(Arrays.asList(userIds));
    }
    return this.appSpecificUsersCache;
  }
  
  public Iterable<Answer> getLatestAnswersFromUserId(long userId) {
    String url = "https://api.stackexchange.com/2.1/users/" + userId + "/answers?pagesize=50&order=desc&sort=creation&site=stackoverflow&filter=!)S00ZqWt(fvhAhy5Tf1InB)F";
    String jsonString = Utils.getJSONfromStackOverflowURL(url);
    
    //loop through items to get answers
    List<Answer> answers = new ArrayList<Answer>();
    
    try {
      JSONObject json = new JSONObject(jsonString);
      JSONArray itemsArray = json.getJSONArray("items");
      for (int i = 0; i < itemsArray.length(); i++) {
        JSONObject answerJson = itemsArray.getJSONObject(i); 
        Answer a = Answer.fromJSONObject(answerJson);
        answers.add(a);
      }
    } catch (JSONException e) {
      e.printStackTrace();
    }
    
    return answers;
  }
  
  public Question getQuestionFromQuestionId(long questionId) {
    String url = "https://api.stackexchange.com/2.1/questions/" + questionId + "?order=desc&sort=activity&site=stackoverflow&filter=!BGS0Gt_sf1-NOm2fAHDd7lr02bLDNg";
    String jsonString = Utils.getJSONfromStackOverflowURL(url);
    
    Question question = null;
    try {
      JSONObject json = new JSONObject(jsonString);
      JSONArray itemsArray = json.getJSONArray("items");
      int itemsArrayLength = itemsArray.length(); 
      if (itemsArrayLength != 1) {
        Log.e(StackOverflowRepository.class.toString(), String.format("Incorrect number of questions found. Expecting: 1, Actual: %d", itemsArrayLength));
      }
      for (int i = 0; i < itemsArray.length(); i++) {
        JSONObject questionJson = itemsArray.getJSONObject(i); 
        question = Question.fromJSONObject(questionJson);
      }
    } catch (JSONException e) {
      e.printStackTrace();
    }
    
    return question;
  }
  
  private Iterable<User> getUsersFromIds(Iterable<String> userIds) {
    
    //create URL from userIds
    String ids = Utils.reduce(new Reducer<String, String>() {
      @Override
      public String foldIn(String accum, String next) {
        return accum + "%3B" + next;
      }
    }, userIds);
    
    String url = "https://api.stackexchange.com/2.1/users/" + ids + "?order=desc&sort=name&site=stackoverflow&filter=!23IYX9QhL197kxGBIakjC";
    
    //get json
    String jsonString = Utils.getJSONfromStackOverflowURL(url);
    
    //loop through items to get users
    List<User> users = new ArrayList<User>();
    
    try {
      JSONObject json = new JSONObject(jsonString);
      JSONArray itemsArray = json.getJSONArray("items");
      for (int i = 0; i < itemsArray.length(); i++) {
        JSONObject userJson = itemsArray.getJSONObject(i); 
        User u = User.fromJSONObject(userJson);
        users.add(u);
      }
    } catch (JSONException e) {
      e.printStackTrace();
    }
    
    return users;
  }
}

Java Source Code List

• Back to App/simple  ↑