CachedGeocodeResponse

package com.weather.dal;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.json.JSONException;
import com.weather.dal.CachedGeocodeResponse.GeocodeResponseData;

/** A lightweight object for caching responses from the Google Geocoding service. It is important
 * that this class have as small a footprint as possible.  This class is intentionally scoped
 * for package access.
 * */
class CachedGeocodeResponse implements Iterable<GeocodeResponseData> {

    private final List<GeocodeResponseData> responseList;

    static class GeocodeResponseData {
        private final String name;
        private final Double lat;
        private final Double lng;

        GeocodeResponseData(String name, double lat, double lng) {
            this.name = name;
            this.lat = lat;
            this.lng = lng;
        }

        String getName() {
            return name;
        }

        Double getLat() {
            return lat;
        }

        Double getLng() {
            return lng;
        }
    }

    private CachedGeocodeResponse(String jsonString) throws JSONException {
        GoogleGeocodeResponse response = GoogleGeocodeResponse.newInstance(jsonString);
        int count = Math.min(response.getCount(), SearchStringConnection.MAX_LOCATION_CHOICES);
        responseList = new ArrayList<GeocodeResponseData>(count);
        for (int i = 0, n = count; i < n; i++) {
            String name = response.getNickname(i);
            double lat = response.getLat(i);
            double lng = response.getLong(i);
            GeocodeResponseData data = new GeocodeResponseData(name, lat, lng);
            responseList.add(data);
        }
    }

    static CachedGeocodeResponse newInstance(String jsonString) throws JSONException {
        return new CachedGeocodeResponse(jsonString);
    }

    public Iterator<GeocodeResponseData> iterator() {
        return responseList.iterator();
    }


}