Android Open Source - android-weather-demo-application Save Forecast Async Task

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License

The source code is released under:

GNU General Public License

Java Source Code

package org.openweathermap.asynctask;
/*from  w  ww.  j av  a2  s  . c om*/
import java.util.HashMap;

import org.openweathermap.WeatherApplication;
import org.openweathermap.asynctask.base.BaseAsyncTask;
import org.openweathermap.asynctask.base.BaseResponse;
import org.openweathermap.asynctask.base.IParam;
import org.openweathermap.asynctask.param.SaveForecastParam;
import org.openweathermap.asynctask.response.SaveForecastResponse;
import org.openweathermap.dto.CityDTO;
import org.openweathermap.dto.DayDTO;
import org.openweathermap.sql.model.CityModel;
import org.openweathermap.sql.model.IconModel;
import org.openweathermap.sql.model.WeatherModel;

import android.content.ContentValues;
import android.content.Context;

/**
 * @author samkirton
 */
public class SaveForecastAsyncTask extends BaseAsyncTask {

  public SaveForecastAsyncTask(Context context) { super(context); }

  @Override
  protected BaseResponse run(IParam param) {
    SaveForecastParam saveForecastParam = (SaveForecastParam)param;
    SaveForecastResponse saveForecastResponse = new SaveForecastResponse();
    
    CityDTO cityDTO = saveForecastParam.getCityDTO();
    DayDTO[] dayDTOArray = saveForecastParam.getDayDTOArray();
    
    WeatherModel[] weatherModelArray = null;
    long[] weatherPidArray = null;
    
    // insert icon model if the code does not already exist
    HashMap<String,Integer> iconMap = buildIconModel(dayDTOArray);
    
    // select or insert the city model if it does not exist
    CityModel cityModel = doesCityExist(cityDTO);
    long cityPid = -1;
    if (cityModel == null) {
      cityModel = buildCityModel(cityDTO);
      cityPid = WeatherApplication.getInstance().getSQLProvider().insert(cityModel);
    } else {
      cityPid = cityModel.getPid();
      cityModel.setLastViewedTimestamp(System.currentTimeMillis());
      
      // clear the forecast for this city
      WeatherApplication.getInstance().getSQLProvider().deleteBy(
        WeatherModel.class, 
        "cityId", 
        String.valueOf(cityPid)
      );
      
      //  Update the last viewed timestamp
      ContentValues contentValues = new ContentValues();
      contentValues.put("lastViewedTimestamp", System.currentTimeMillis());
      
      WeatherApplication.getInstance().getSQLProvider().update(
        contentValues, 
        "pid = ?", 
        new String[] {String.valueOf(cityPid)},
        CityModel.class
      );
    }
    
    // insert weather the models
    if (cityPid > -1) { 
      weatherModelArray = buildWeatherModelArray(dayDTOArray,(int)cityPid,iconMap);
      weatherPidArray = WeatherApplication.getInstance().getSQLProvider().insertArray(weatherModelArray);
    }
    
    // were the SQL queries executed successfully?
    if (weatherPidArray != null && weatherPidArray.length == dayDTOArray.length) {
      saveForecastResponse.setCityModel(cityModel);
      saveForecastResponse.setWeatherModelArray(weatherModelArray);
      saveForecastResponse.setIconMap(iconMap);
    } else {
      saveForecastResponse.setIsValid(false);
    }
    
    return saveForecastResponse;
  }
  
  /**
   * Check whether the city already exists in the database
   * @param  cityDTO  Use to check whether the city exists 
   * @return  Does the city already exist in the databse
   */
  private CityModel doesCityExist(CityDTO cityDTO) {
    CityModel[] cityModelArray = WeatherApplication.getInstance().getSQLProvider().selectByWhereClause(
      CityModel.class, 
      new CityModel(), 
      "name = ? AND country = ?", 
      new String[] {cityDTO.getName(),cityDTO.getCountry()}, 
      null, 
      null
    );
    
    CityModel cityModel = null;
    if (cityModelArray.length > 0) {
      cityModel = cityModelArray[0];
    }
    
    return cityModel;
  }
  
  /**
   * Populate a HashMap of code/pid pair for the icons required by the forecast
   * @param   dayDTOArray  The DayDTO where the icon codes reside
   * @return   HashMap of code/pid pair for the icons required by the forecast
   */
  private HashMap<String,Integer> buildIconModel(DayDTO[] dayDTOArray) {
    HashMap<String,Integer> iconCodes = new HashMap<String,Integer>();
    
    for (int i = 0; i < dayDTOArray.length; i++) {
      DayDTO dayDTO = dayDTOArray[i];
      String iconCode = dayDTO.getWeatherList()[0].getIcon();
      
      IconModel[] iconModelArray = WeatherApplication.getInstance().getSQLProvider().selectByWhereClause(
        IconModel.class, 
        new IconModel(), 
        "code = ?", 
        new String[] {iconCode}, 
        null, 
        null
      );
      
      if (iconModelArray.length > 0) {
        IconModel iconModel = iconModelArray[0];
        iconCodes.put(iconModel.getCode(), iconModel.getPid());
      } else {
        IconModel iconModel = new IconModel();
        iconModel.setCode(iconCode);
        long pid = WeatherApplication.getInstance().getSQLProvider().insert(iconModel);
        iconCodes.put(iconCode, (int)pid);
      }
    }
    
    return iconCodes;
  }
  
  /**
   * Create a CityModel object based on the provided CityDTO
   * @param  cityDTO  The DTO to build the CityModel
   * @return  CityModel object based on the provided CityDTO
   */
  private CityModel buildCityModel(CityDTO cityDTO) {
    CityModel cityModel = new CityModel();
    cityModel.setName(cityDTO.getName());
    cityModel.setCountry(cityDTO.getCountry());
    cityModel.setLatitude(String.valueOf(cityDTO.getCoord().getLat()));
    cityModel.setLongitude(String.valueOf(cityDTO.getCoord().getLon()));
    cityModel.setLastViewedTimestamp(System.currentTimeMillis());
    return cityModel;
  }
  
  /**
   * Create a WeatherModel array based on the provided DayDTO array.
   * @param  dayDTOArray  The DTO to build the WeatherModel array
   * @return  WeatherModel array based on the provided DayDTO array
   */
  private WeatherModel[] buildWeatherModelArray(DayDTO[] dayDTOArray, int cityId, HashMap<String,Integer> iconMap) {
    WeatherModel[] weatherModelArray = new WeatherModel[dayDTOArray.length];
    for (int i = 0; i < weatherModelArray.length; i++) {
      DayDTO dayDTO = dayDTOArray[i];
      WeatherModel weatherModel = new WeatherModel();
      weatherModel.setIconId(iconMap.get(dayDTO.getWeatherList()[0].getIcon()));
      weatherModel.setCityId(cityId);
      weatherModel.setDescription(dayDTO.getWeatherList()[0].getMain());
      weatherModel.setDescriptionDetailed(dayDTO.getWeatherList()[0].getDescription());
      weatherModel.setTimestamp(dayDTO.getDt());
      weatherModel.setTmpDay(dayDTO.getTemp().getDay());
      weatherModel.setTmpEve(dayDTO.getTemp().getEve());
      weatherModel.setTmpNight(dayDTO.getTemp().getNight());
      weatherModel.setTmpMin(dayDTO.getTemp().getMin());
      weatherModel.setTmpMax(dayDTO.getTemp().getMax());
      weatherModel.setPressure(dayDTO.getPressure());
      weatherModel.setHumidity(dayDTO.getHumidity());
      weatherModel.setWindSpeed(dayDTO.getSpeed());
      weatherModel.setWindDegrees(dayDTO.getDeg());
      weatherModel.setCloudCoverage(dayDTO.getClouds());
      weatherModelArray[i] = weatherModel;
    }
    
    return weatherModelArray;
  }
}

Java Source Code List

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