Android Open Source - watchme I M D B Handler

• Back to App/track  ↑

From Project

Back to project page watchme.

License

The source code is released under:

Copyright (c) 2012 Johan Brook, Robin Andersson, Lisa Stenberg, Mattias Henriksson Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documen...

Java Source Code

/**
 *  IMDBHandler.java/*w  ww  .ja va2  s . com*/
 *
 *  Class responsible for making requests to the IMDb API.
 *
 *  @author Johan
 *  @copyright (c) 2012 Johan Brook, Robin Andersson, Lisa Stenberg, Mattias Henriksson
 *  @license MIT
 */

package se.chalmers.watchme.net;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

public class IMDBHandler implements MovieSource {

  /** The TMDb API url */
  public static final String API_URL = "http://api.themoviedb.org/2.1/";

  /** The API movie search method */
  private static final String MOVIE_SEARCH = "Movie.search/";
  /** The API movie info method */
  private static final String MOVIE_INFO = "Movie.getInfo/";
  /** The IMDb lookup method */
  private static final String IMDB_INFO = "Movie.imdbLookup/";
  /** Specify language */
  private static final String LANGUAGE = "en/";
  /** Return format */
  private static final String JSON_FORMAT = "json/";

  /** The TMDb API key */
  private static final String API_KEY = "6af2e4697c90e9c6e4a8f2434eb3c5fe";

  // Initialize the HTTP handler
  private HttpRetriever http = new HttpRetriever();

  /**
   * Build a URL for searching the API from a query.
   * 
   * <p>
   * <strong>Format:</strong>
   * </p>
   * 
   * <pre>
   * <code>http://api.themoviedb.org/2.1/Movie.search/en/json/APIKEY/query</code>
   * </pre>
   * 
   * @param query
   *            The query, i.e. a movie title
   * @return A String with the complete request url
   */
  private String buildURL(String query, String method) {
    StringBuilder s = new StringBuilder();

    try {
      s.append(API_URL).append(method).append(LANGUAGE)
          .append(JSON_FORMAT).append(API_KEY).append("/")
          .append(URLEncoder.encode(query, "UTF-8"));
    } catch (UnsupportedEncodingException e) {
      e.printStackTrace();
    }

    return s.toString();
  }

  /**
   * Searching the API for a movie.
   * 
   * @param title
   *            The movie title
   * @return A JSONArray with the movies as JSONObjects on success. Otherwise
   *         null
   */
  public JSONArray getMoviesByTitle(String title) {
    final String url = this.buildURL(title, MOVIE_SEARCH);
    String response = this.getResponse(url);

    /*
     * Since the API service doesn't use sane HTTP status codes for things
     * such as non-existing movies, we have to compare to a static string ..
     */
    if (response == null || response.indexOf("Nothing found") != -1) {
      return null;
    }

    JSONArray movies = null;

    try {
      movies = new JSONArray(response);
    } catch (JSONException e) {
      e.printStackTrace();
    }

    return movies;
  }

  /**
   * Get a movie from the API movie id
   * 
   * @param id
   *            The API movie id. Get from either getMovieByIMDBID or
   *            getMoviesByTitle
   * @return A JSONObject representing the movie. If nothing was found, it
   *         returns null
   */
  public JSONObject getMovieById(int id) {
    final String url = this.buildURL(String.valueOf(id), MOVIE_INFO);
    String response = this.getResponse(url);

    return (response == null) ? null : parseStringToJSON(response);
  }

  /**
   * Get a movie from IMDb as a JSON object.
   * 
   * @param id
   *            The IMDB ID
   * @return A JSON object representing the movie. If no movie was found, it
   *         returns null
   */
  public JSONObject getMovieByIMDBID(String id) {
    final String url = this.buildURL(id, IMDB_INFO);
    String response = this.getResponse(url);

    return (response == null) ? null : parseStringToJSON(response);
  }

  /**
   * Helper function to create a new JSONObject from a string.
   * 
   * <p>
   * Note that this function checks if the input string is a JSON array, e.g.
   * checks for square brackets in the beginning and end. If the string is an
   * array with a single JSON object, the object is parsed.
   * </p>
   * 
   * @param s
   *            The input string
   * @return A JSONObject from the string. Returns null if an error occurred
   *         while parsing the string
   */
  public static JSONObject parseStringToJSON(String s) {
    JSONObject json = null;

    try {
      if (s.charAt(0) == '[' && s.charAt(s.length() - 1) == ']') {
        JSONArray ar = new JSONArray(s);
        json = ar.getJSONObject(0);
      } else {
        json = new JSONObject(s);
      }

    } catch (JSONException e) {
      System.err.println("Error while parsing JSONObject");
      System.err.println(e.getMessage());
      e.printStackTrace();
    }

    return json;
  }

  /**
   * Helper method to get a String response from an URL.
   * 
   * <p>
   * Catches eventual exceptions.
   * </p>
   * 
   * @param url
   *            The URL
   * @return A String response. Returns null if something went wrong.
   */
  private String getResponse(String url) {
    String response = null;

    try {
      response = this.http.get(url);
    } catch (IOException e) {
      System.err.print("Error fetching " + url + ": ");
      System.err.println(e.getMessage());
    } catch (NoEntityException e) {
      System.err.println(e.getMessage());
    }

    return response;
  }
}

Java Source Code List

• Back to App/track  ↑