Android Open Source - opentraining Sports Equipment J S O N Parser

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License

The source code is released under:

GNU General Public License

Java Source Code

/**
 * // www. j  ava  2  s.  c om
 * This is OpenTraining, an Android application for planning your your fitness training.
 * Copyright (C) 2012-2014 Christian Skubich
 * 
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * 
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */

package de.skubware.opentraining.db.parser;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

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

import android.util.Log;

import de.skubware.opentraining.basic.SportsEquipment;

public class SportsEquipmentJSONParser extends AbstractJSONParser<List<SportsEquipment>> {
  /** Tag for logging */
  public static final String TAG = "SportsEquipmentJSONParser<>";
  
  // JSON Node names
  private static final String TAG_NAME = "name";
  private static final String TAG_ALTERNATIVE_NAMES = "alternative_names";
  
  private static final String[] TAG_LOCALES = {"de", "en", "it"};
   
  /**
   * Parses the JSON-String to a list of {@link SportsEquipment}s.
   * 
   * Example for such a .json File:
   * 
   * [{
     *  "de": { "name" : "bungsmatte", "alternative_names": ["Gymnastikmatte"] },
   *  "en": { "name" : "Exercise Mat" }
   * }, ...]
     *   
     * @param jsonString The String to parse.
     * 
     * @return A list of {@link SportsEquipment}s, null if an Error occurs.
    * 
   */
  @Override
  public List<SportsEquipment> parse(String jsonString) {
    List<SportsEquipment> sportsEquipmentList = new ArrayList<SportsEquipment>();


    
    JSONArray jsonArray;
    try {
      jsonArray = new JSONArray(jsonString);
      
      for (int i = 0; i < jsonArray.length(); i++) {
        JSONObject SportsEquipmentObject = jsonArray.getJSONObject(i);
        
        SportsEquipment m = null;

        for(String locale:TAG_LOCALES){
          if(SportsEquipmentObject.has(locale)){
            JSONObject languageObject = SportsEquipmentObject.getJSONObject(locale);
            
            // name
            String name = languageObject.getString(TAG_NAME);

            // first name is primary name, all other names are alternative names
            List<String> nameList = new ArrayList<String>();
            nameList.add(name);
            
            // alternative names  
            if(languageObject.has(TAG_ALTERNATIVE_NAMES)){
              JSONArray alternativeNameJSONArray = languageObject.getJSONArray(TAG_ALTERNATIVE_NAMES);
              String[]  alternativeNameArray = this.jsonArrayToStringArray(alternativeNameJSONArray);
              
              for (int t = 0; t < alternativeNameArray.length; t++) {
                String altName = alternativeNameArray[t];
                nameList.add(altName);
              }
            }  

            
            if(m == null){
              m = new SportsEquipment(new Locale(locale), nameList);
            }else{
              m.addNames(new Locale(locale), nameList);
            }
          }
        }
        
        // Log.d(TAG, "Finished parsing SportsEquipment: \n" + m.toDebugString());
        sportsEquipmentList.add(m);

      }

    } catch (JSONException e) {
      Log.e(TAG, "Error during parsing JSON File.", e);
      return null;
    }

    if(sportsEquipmentList.isEmpty())
      throw new AssertionError("JSON parsing failed: no SportsEquipments parsed.");
    return sportsEquipmentList;
  }
  
  
  private String[] jsonArrayToStringArray(JSONArray jsonArray){
      return jsonArray.toString().substring(1,jsonArray.toString().length()-1).replaceAll("\"","").split(",");
  }


}

Java Source Code List

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