Android Open Source - ean-android List Request

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Copyright (c) 2013, Expedia Affiliate Network All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that redistributions of sour...

Java Source Code

/*
 * Copyright (c) 2013, Expedia Affiliate Network
 * All rights reserved./*w ww. j a va2  s. c om*/
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that redistributions of source code
 * retain the above copyright notice, these conditions, and the following
 * disclaimer. 
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are those
 * of the authors and should not be interpreted as representing official policies, 
 * either expressed or implied, of the Expedia Affiliate Network or Expedia Inc.
 */

package com.ean.mobile.hotel.request;

import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

import org.apache.http.NameValuePair;
import org.apache.http.message.BasicNameValuePair;
import org.joda.time.LocalDate;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.util.Log;

import com.ean.mobile.exception.EanWsError;
import com.ean.mobile.hotel.Hotel;
import com.ean.mobile.hotel.HotelList;
import com.ean.mobile.hotel.RoomOccupancy;
import com.ean.mobile.request.CommonParameters;
import com.ean.mobile.request.Request;

/**
 * The most useful method gets the List of hotels based on the search parameters, particularly the destination passed.
 */
public final class ListRequest extends Request<HotelList> {

    private static final String NUMBER_OF_RESULTS = "10";

    /**
     * Uses the EAN API to search for hotels in the given destination using http requests.
     *
     * @param destination The destination to search for hotel availability.
     * @param occupancy The stated occupancy to search for.
     * @param arrivalDate The arrival date of the request.
     * @param departureDate The departure date of the request.
     */
    public ListRequest(final String destination, final RoomOccupancy occupancy,
            final LocalDate arrivalDate, final LocalDate departureDate) {

        this(destination, Collections.singletonList(occupancy), arrivalDate, departureDate);
    }
    /**
     * Uses the EAN API to search for hotels in the given destination using http requests.
     *
     * @param destination The destination to search for hotel availability.
     * @param occupancies The stated occupancy of each room to search for.
     * @param arrivalDate The arrival date of the request.
     * @param departureDate The departure date of the request.
     */
    public ListRequest(final String destination, final List<RoomOccupancy> occupancies,
            final LocalDate arrivalDate, final LocalDate departureDate) {

        final List<NameValuePair> requestParameters = Arrays.<NameValuePair>asList(
            new BasicNameValuePair("destinationString", destination),
            new BasicNameValuePair("numberOfResults", NUMBER_OF_RESULTS)
        );

        final List<NameValuePair> roomParameters = new ArrayList<NameValuePair>(occupancies.size());

        int roomNumber = 1;
        for (RoomOccupancy occupancy : occupancies) {
            roomParameters.add(new BasicNameValuePair("room" + roomNumber, occupancy.asAbbreviatedRequestString()));
            roomNumber++;
        }

        final List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
        urlParameters.addAll(getBasicUrlParameters(arrivalDate, departureDate));
        urlParameters.addAll(requestParameters);
        urlParameters.addAll(roomParameters);

        setUrlParameters(urlParameters);
    }

    /**
     * Loads more results into a HotelList so pagination can be supported.
     * @param cacheKey Cache key from previous request
     * @param cacheLocation Cache location from previous request
     */
    public ListRequest(final String cacheKey, final String cacheLocation) {

        final List<NameValuePair> requestParameters = Arrays.<NameValuePair>asList(
            new BasicNameValuePair("cacheKey", cacheKey),
            new BasicNameValuePair("cacheLocation", cacheLocation)
        );

        final List<NameValuePair> urlParameters = new ArrayList<NameValuePair>();
        urlParameters.addAll(getBasicUrlParameters());
        urlParameters.addAll(requestParameters);

        setUrlParameters(urlParameters);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public HotelList consume(final JSONObject jsonObject) throws JSONException, EanWsError {
        if (jsonObject == null) {
            return null;
        }

        final JSONObject response = jsonObject.getJSONObject("HotelListResponse");

        if (response.has("EanWsError")) {
            throw EanWsError.fromJson(response.getJSONObject("EanWsError"));
        }

        final String newCacheKey = response.optString("cacheKey");
        final String newCacheLocation = response.optString("cacheLocation");
        final String outgoingCustomerSessionId = response.optString("customerSessionId");
        final int totalNumberOfResults = response.optJSONObject("HotelList").optInt("@activePropertyCount");

        final JSONArray newHotelJson = response.getJSONObject("HotelList").getJSONArray("HotelSummary");
        final List<Hotel> newHotels = new ArrayList<Hotel>(newHotelJson.length());
        for (int i = 0; i < newHotelJson.length(); i++) {
            try {
                newHotels.add(new Hotel(newHotelJson.getJSONObject(i)));
            } catch (MalformedURLException me) {
                Log.e("Unable to process JSON", me.getMessage());
            }
        }

        CommonParameters.customerSessionId = outgoingCustomerSessionId;

        return new HotelList(newHotels,
            newCacheKey, newCacheLocation, outgoingCustomerSessionId, totalNumberOfResults);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public URI getUri() throws URISyntaxException {
        return new URI("http", "api.ean.com", "/ean-services/rs/hotel/v3/list", getQueryString(), null);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean requiresSecure() {
        return false;
    }

}

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