/*
* COMSAT
* Copyright (c) 2013-2014, Parallel Universe Software Co. All rights reserved.
*
* This program and the accompanying materials are dual-licensed under
* either the terms of the Eclipse Public License v1.0 as published by
* the Eclipse Foundation
*
* or (per the licensee's choosing)
*
* under the terms of the GNU Lesser General Public License version 3.0
* as published by the Free Software Foundation.
*/
/*
* Based on the corresponding class in Spring Boot Samples.
* Copyright the original author(s).
* Released under the ASF 2.0 license.
*/
package comsat.sample.data.jpa.service;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.Assert;
import comsat.sample.data.jpa.domain.City;
import comsat.sample.data.jpa.domain.Hotel;
import comsat.sample.data.jpa.domain.Rating;
import comsat.sample.data.jpa.domain.RatingCount;
import comsat.sample.data.jpa.domain.Review;
import comsat.sample.data.jpa.domain.ReviewDetails;
@Component("hotelService")
@Transactional
class HotelServiceImpl implements HotelService {
private final HotelRepository hotelRepository;
private final ReviewRepository reviewRepository;
@Autowired
public HotelServiceImpl(HotelRepository hotelRepository,
ReviewRepository reviewRepository) {
this.hotelRepository = hotelRepository;
this.reviewRepository = reviewRepository;
}
@Override
public Hotel getHotel(City city, String name) {
Assert.notNull(city, "City must not be null");
Assert.hasLength(name, "Name must not be empty");
return this.hotelRepository.findByCityAndName(city, name);
}
@Override
public Page<Review> getReviews(Hotel hotel, Pageable pageable) {
Assert.notNull(hotel, "Hotel must not be null");
return this.reviewRepository.findByHotel(hotel, pageable);
}
@Override
public Review getReview(Hotel hotel, int reviewNumber) {
Assert.notNull(hotel, "Hotel must not be null");
return this.reviewRepository.findByHotelAndIndex(hotel, reviewNumber);
}
@Override
public Review addReview(Hotel hotel, ReviewDetails details) {
Review review = new Review(hotel, 1, details);
return reviewRepository.save(review);
}
@Override
public ReviewsSummary getReviewSummary(Hotel hotel) {
List<RatingCount> ratingCounts = this.hotelRepository.findRatingCounts(hotel);
return new ReviewsSummaryImpl(ratingCounts);
}
private static class ReviewsSummaryImpl implements ReviewsSummary {
private final Map<Rating, Long> ratingCount;
public ReviewsSummaryImpl(List<RatingCount> ratingCounts) {
this.ratingCount = new HashMap<Rating, Long>();
for (RatingCount ratingCount : ratingCounts) {
this.ratingCount.put(ratingCount.getRating(), ratingCount.getCount());
}
}
@Override
public long getNumberOfReviewsWithRating(Rating rating) {
Long count = this.ratingCount.get(rating);
return count == null ? 0 : count;
}
}
}