Add Hibernate 4 sample

Add a sample showing how Hibernate 4 can be used if necessary.

See gh-2763

spring-boot-samples/pom.xml

@@ -45,6 +45,7 @@
 		<module>spring-boot-sample-devtools</module>
 		<module>spring-boot-sample-flyway</module>
 		<module>spring-boot-sample-hateoas</module>
+		<module>spring-boot-sample-hibernate4</module>
 		<module>spring-boot-sample-hornetq</module>
 		<module>spring-boot-sample-hypermedia</module>
 		<module>spring-boot-sample-hypermedia-gson</module>

spring-boot-samples/spring-boot-sample-hibernate4/pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<parent>
+		<!-- Your own application should inherit from spring-boot-starter-parent -->
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-samples</artifactId>
+		<version>1.4.0.BUILD-SNAPSHOT</version>
+	</parent>
+	<artifactId>spring-boot-sample-hibernate4</artifactId>
+	<name>Spring Boot Hibernate 4 Sample</name>
+	<description>Spring Boot Hibernate 4 Sample</description>
+	<url>http://projects.spring.io/spring-boot/</url>
+	<organization>
+		<name>Pivotal Software, Inc.</name>
+		<url>http://www.spring.io</url>
+	</organization>
+	<properties>
+		<main.basedir>${basedir}/../..</main.basedir>
+		<hibernate.version>4.3.11.Final</hibernate.version>
+	</properties>
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-data-jpa</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<scope>runtime</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.springframework.boot</groupId>
+				<artifactId>spring-boot-maven-plugin</artifactId>
+				<dependencies>
+					<dependency>
+						<groupId>org.springframework</groupId>
+						<artifactId>springloaded</artifactId>
+						<version>${spring-loaded.version}</version>
+					</dependency>
+				</dependencies>
+			</plugin>
+		</plugins>
+	</build>
+</project>

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/SampleHibernate4Application.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SampleHibernate4Application {
+
+	public static void main(String[] args) throws Exception {
+		SpringApplication.run(SampleHibernate4Application.class, args);
+	}
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/domain/City.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.domain;
+
+import java.io.Serializable;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+@Entity
+public class City implements Serializable {
+
+	private static final long serialVersionUID = 1L;
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
+
+	@Column(nullable = false)
+	private String name;
+
+	@Column(nullable = false)
+	private String state;
+
+	@Column(nullable = false)
+	private String country;
+
+	@Column(nullable = false)
+	private String map;
+
+	protected City() {
+	}
+
+	public City(String name, String country) {
+		super();
+		this.name = name;
+		this.country = country;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public String getState() {
+		return this.state;
+	}
+
+	public String getCountry() {
+		return this.country;
+	}
+
+	public String getMap() {
+		return this.map;
+	}
+
+	@Override
+	public String toString() {
+		return getName() + "," + getState() + "," + getCountry();
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/domain/Hotel.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.domain;
+
+import java.io.Serializable;
+import java.util.Set;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.FetchType;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+import javax.persistence.OneToMany;
+
+import org.hibernate.annotations.NaturalId;
+
+@Entity
+public class Hotel implements Serializable {
+
+	private static final long serialVersionUID = 1L;
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
+
+	@ManyToOne(optional = false)
+	@NaturalId
+	private City city;
+
+	@Column(nullable = false)
+	@NaturalId
+	private String name;
+
+	@Column(nullable = false)
+	private String address;
+
+	@Column(nullable = false)
+	private String zip;
+
+	@OneToMany(fetch = FetchType.LAZY, mappedBy = "hotel")
+	private Set<Review> reviews;
+
+	protected Hotel() {
+	}
+
+	public Hotel(City city, String name) {
+		this.city = city;
+		this.name = name;
+	}
+
+	public City getCity() {
+		return this.city;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public String getAddress() {
+		return this.address;
+	}
+
+	public String getZip() {
+		return this.zip;
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/domain/HotelSummary.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.domain;
+
+public interface HotelSummary {
+
+	City getCity();
+
+	String getName();
+
+	Double getAverageRating();
+
+	default Integer getAverageRatingRounded() {
+		return getAverageRating() == null ? null : (int) Math.round(getAverageRating());
+	}
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/domain/Rating.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.domain;
+
+public enum Rating {
+	TERRIBLE, POOR, AVERAGE, GOOD, EXCELLENT,
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/domain/RatingCount.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.domain;
+
+public interface RatingCount {
+
+	Rating getRating();
+
+	long getCount();
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/domain/Review.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.domain;
+
+import java.io.Serializable;
+import java.util.Date;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.EnumType;
+import javax.persistence.Enumerated;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+import javax.persistence.ManyToOne;
+import javax.persistence.Temporal;
+import javax.persistence.TemporalType;
+
+import org.springframework.util.Assert;
+
+@Entity
+public class Review implements Serializable {
+
+	private static final long serialVersionUID = 1L;
+
+	@Id
+	@GeneratedValue(strategy = GenerationType.IDENTITY)
+	private Long id;
+
+	@ManyToOne(optional = false)
+	private Hotel hotel;
+
+	@Column(nullable = false, name = "idx")
+	private int index;
+
+	@Column(nullable = false)
+	@Enumerated(EnumType.ORDINAL)
+	private Rating rating;
+
+	@Column(name= "CHECK_IN_DATE", nullable = false)
+	@Temporal(TemporalType.DATE)
+	private Date checkInDate;
+
+	@Column(name = "TRIP_TYPE", nullable = false)
+	@Enumerated(EnumType.ORDINAL)
+	private TripType tripType;
+
+	@Column(nullable = false)
+	private String title;
+
+	@Column(nullable = false, length = 5000)
+	private String details;
+
+	protected Review() {
+	}
+
+	public Review(Hotel hotel, int index, ReviewDetails details) {
+		Assert.notNull(hotel, "Hotel must not be null");
+		Assert.notNull(details, "Details must not be null");
+		this.hotel = hotel;
+		this.index = index;
+		this.rating = details.getRating();
+		this.checkInDate = details.getCheckInDate();
+		this.tripType = details.getTripType();
+		this.title = details.getTitle();
+		this.details = details.getDetails();
+	}
+
+	public Hotel getHotel() {
+		return this.hotel;
+	}
+
+	public int getIndex() {
+		return this.index;
+	}
+
+	public Rating getRating() {
+		return this.rating;
+	}
+
+	public void setRating(Rating rating) {
+		this.rating = rating;
+	}
+
+	public Date getCheckInDate() {
+		return this.checkInDate;
+	}
+
+	public void setCheckInDate(Date checkInDate) {
+		this.checkInDate = checkInDate;
+	}
+
+	public TripType getTripType() {
+		return this.tripType;
+	}
+
+	public void setTripType(TripType tripType) {
+		this.tripType = tripType;
+	}
+
+	public String getTitle() {
+		return this.title;
+	}
+
+	public void setTitle(String title) {
+		this.title = title;
+	}
+
+	public String getDetails() {
+		return this.details;
+	}
+
+	public void setDetails(String details) {
+		this.details = details;
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/domain/ReviewDetails.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.domain;
+
+import java.io.Serializable;
+import java.util.Date;
+
+public class ReviewDetails implements Serializable {
+
+	private static final long serialVersionUID = 1L;
+
+	private Rating rating;
+
+	private Date checkInDate;
+
+	private TripType tripType;
+
+	private String title;
+
+	private String details;
+
+	public ReviewDetails() {
+	}
+
+	public Rating getRating() {
+		return this.rating;
+	}
+
+	public void setRating(Rating rating) {
+		this.rating = rating;
+	}
+
+	public Date getCheckInDate() {
+		return this.checkInDate;
+	}
+
+	public void setCheckInDate(Date checkInDate) {
+		this.checkInDate = checkInDate;
+	}
+
+	public TripType getTripType() {
+		return this.tripType;
+	}
+
+	public void setTripType(TripType tripType) {
+		this.tripType = tripType;
+	}
+
+	public String getTitle() {
+		return this.title;
+	}
+
+	public void setTitle(String title) {
+		this.title = title;
+	}
+
+	public String getDetails() {
+		return this.details;
+	}
+
+	public void setDetails(String details) {
+		this.details = details;
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/domain/TripType.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.domain;
+
+public enum TripType {
+	BUSINESS, COUPLES, FAMILY, FRIENDS, SOLO
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/CityRepository.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import sample.hibernate4.domain.City;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.repository.Repository;
+
+interface CityRepository extends Repository<City, Long> {
+
+	Page<City> findAll(Pageable pageable);
+
+	Page<City> findByNameContainingAndCountryContainingAllIgnoringCase(String name,
+			String country, Pageable pageable);
+
+	City findByNameAndCountryAllIgnoringCase(String name, String country);
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/CitySearchCriteria.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import java.io.Serializable;
+
+import org.springframework.util.Assert;
+
+public class CitySearchCriteria implements Serializable {
+
+	private static final long serialVersionUID = 1L;
+
+	private String name;
+
+	public CitySearchCriteria() {
+	}
+
+	public CitySearchCriteria(String name) {
+		Assert.notNull(name, "Name must not be null");
+		this.name = name;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/CityService.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import sample.hibernate4.domain.City;
+import sample.hibernate4.domain.HotelSummary;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
+public interface CityService {
+
+	Page<City> findCities(CitySearchCriteria criteria, Pageable pageable);
+
+	City getCity(String name, String country);
+
+	Page<HotelSummary> getHotels(City city, Pageable pageable);
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/CityServiceImpl.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import sample.hibernate4.domain.City;
+import sample.hibernate4.domain.HotelSummary;
+
+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 org.springframework.util.StringUtils;
+
+@Component("cityService")
+@Transactional
+class CityServiceImpl implements CityService {
+
+	private final CityRepository cityRepository;
+
+	private final HotelRepository hotelRepository;
+
+	public CityServiceImpl(CityRepository cityRepository,
+			HotelRepository hotelRepository) {
+		this.cityRepository = cityRepository;
+		this.hotelRepository = hotelRepository;
+	}
+
+	@Override
+	public Page<City> findCities(CitySearchCriteria criteria, Pageable pageable) {
+
+		Assert.notNull(criteria, "Criteria must not be null");
+		String name = criteria.getName();
+
+		if (!StringUtils.hasLength(name)) {
+			return this.cityRepository.findAll(null);
+		}
+
+		String country = "";
+		int splitPos = name.lastIndexOf(",");
+
+		if (splitPos >= 0) {
+			country = name.substring(splitPos + 1);
+			name = name.substring(0, splitPos);
+		}
+
+		return this.cityRepository
+				.findByNameContainingAndCountryContainingAllIgnoringCase(name.trim(),
+						country.trim(), pageable);
+	}
+
+	@Override
+	public City getCity(String name, String country) {
+		Assert.notNull(name, "Name must not be null");
+		Assert.notNull(country, "Country must not be null");
+		return this.cityRepository.findByNameAndCountryAllIgnoringCase(name, country);
+	}
+
+	@Override
+	public Page<HotelSummary> getHotels(City city, Pageable pageable) {
+		Assert.notNull(city, "City must not be null");
+		return this.hotelRepository.findByCity(city, pageable);
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/HotelRepository.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import java.util.List;
+
+import sample.hibernate4.domain.City;
+import sample.hibernate4.domain.Hotel;
+import sample.hibernate4.domain.HotelSummary;
+import sample.hibernate4.domain.RatingCount;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.Repository;
+
+interface HotelRepository extends Repository<Hotel, Long> {
+
+	Hotel findByCityAndName(City city, String name);
+
+	@Query("select h.city as city, h.name as name, avg(r.rating) as averageRating "
+			+ "from Hotel h left outer join h.reviews r where h.city = ?1 group by h")
+	Page<HotelSummary> findByCity(City city, Pageable pageable);
+
+	@Query("select r.rating as rating, count(r) as count "
+			+ "from Review r where r.hotel = ?1 group by r.rating order by r.rating DESC")
+	List<RatingCount> findRatingCounts(Hotel hotel);
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/HotelService.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import sample.hibernate4.domain.City;
+import sample.hibernate4.domain.Hotel;
+import sample.hibernate4.domain.Review;
+import sample.hibernate4.domain.ReviewDetails;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+
+public interface HotelService {
+
+	Hotel getHotel(City city, String name);
+
+	Page<Review> getReviews(Hotel hotel, Pageable pageable);
+
+	Review getReview(Hotel hotel, int index);
+
+	Review addReview(Hotel hotel, ReviewDetails details);
+
+	ReviewsSummary getReviewSummary(Hotel hotel);
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/HotelServiceImpl.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import sample.hibernate4.domain.City;
+import sample.hibernate4.domain.Hotel;
+import sample.hibernate4.domain.Rating;
+import sample.hibernate4.domain.RatingCount;
+import sample.hibernate4.domain.Review;
+import sample.hibernate4.domain.ReviewDetails;
+
+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;
+
+@Component("hotelService")
+@Transactional
+class HotelServiceImpl implements HotelService {
+
+	private final HotelRepository hotelRepository;
+
+	private final ReviewRepository reviewRepository;
+
+	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 this.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;
+		}
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/ReviewRepository.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import sample.hibernate4.domain.Hotel;
+import sample.hibernate4.domain.Review;
+
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
+import org.springframework.data.repository.Repository;
+
+interface ReviewRepository extends Repository<Review, Long> {
+
+	Page<Review> findByHotel(Hotel hotel, Pageable pageable);
+
+	Review findByHotelAndIndex(Hotel hotel, int index);
+
+	Review save(Review review);
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/service/ReviewsSummary.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.service;
+
+import sample.hibernate4.domain.Rating;
+
+public interface ReviewsSummary {
+
+	long getNumberOfReviewsWithRating(Rating rating);
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/java/sample/hibernate4/web/SampleController.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4.web;
+
+import sample.hibernate4.service.CityService;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.transaction.annotation.Transactional;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+public class SampleController {
+
+	@Autowired
+	private CityService cityService;
+
+	@RequestMapping("/")
+	@ResponseBody
+	@Transactional(readOnly = true)
+	public String helloWorld() {
+		return this.cityService.getCity("Bath", "UK").getName();
+	}
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/main/resources/application.properties

+spring.h2.console.enabled=true
+
+logging.level.org.hibernate.SQL=debug

spring-boot-samples/spring-boot-sample-hibernate4/src/test/java/sample/hibernate4/SampleDataJpaApplicationTests.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.hibernate4;
+
+import java.lang.management.ManagementFactory;
+
+import javax.management.ObjectName;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import org.springframework.web.context.WebApplicationContext;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+/**
+ * Integration test to run the application.
+ *
+ * @author Oliver Gierke
+ * @author Dave Syer
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest
+// Enable JMX so we can test the MBeans (you can't do this in a properties file)
+@TestPropertySource(properties = { "spring.jmx.enabled:true",
+		"spring.datasource.jmx-enabled:true" })
+@ActiveProfiles("scratch")
+// Separate profile for web tests to avoid clashing databases
+public class SampleDataJpaApplicationTests {
+
+	@Autowired
+	private WebApplicationContext context;
+
+	private MockMvc mvc;
+
+	@Before
+	public void setUp() {
+		this.mvc = MockMvcBuilders.webAppContextSetup(this.context).build();
+	}
+
+	@Test
+	public void testHome() throws Exception {
+
+		this.mvc.perform(get("/")).andExpect(status().isOk())
+				.andExpect(content().string("Bath"));
+	}
+
+	@Test
+	public void testJmx() throws Exception {
+		assertThat(ManagementFactory.getPlatformMBeanServer()
+				.queryMBeans(new ObjectName("jpa.sample:type=ConnectionPool,*"), null))
+						.hasSize(1);
+	}
+
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/test/java/sample/hibernate4/service/CityRepositoryIntegrationTests.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package sample.hibernate4.service;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import sample.hibernate4.domain.City;
+import sample.hibernate4.service.CityRepository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for {@link CityRepository}.
+ *
+ * @author Oliver Gierke
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class CityRepositoryIntegrationTests {
+
+	@Autowired
+	CityRepository repository;
+
+	@Test
+	public void findsFirstPageOfCities() {
+
+		Page<City> cities = this.repository.findAll(new PageRequest(0, 10));
+		assertThat(cities.getTotalElements()).isGreaterThan(20L);
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/test/java/sample/hibernate4/service/HotelRepositoryIntegrationTests.java

+/*
+ * Copyright 2012-2016 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package sample.hibernate4.service;
+
+import java.util.List;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import sample.hibernate4.domain.City;
+import sample.hibernate4.domain.Hotel;
+import sample.hibernate4.domain.HotelSummary;
+import sample.hibernate4.domain.Rating;
+import sample.hibernate4.domain.RatingCount;
+import sample.hibernate4.service.CityRepository;
+import sample.hibernate4.service.HotelRepository;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.PageRequest;
+import org.springframework.data.domain.Sort.Direction;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for {@link HotelRepository}.
+ *
+ * @author Oliver Gierke
+ */
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class HotelRepositoryIntegrationTests {
+
+	@Autowired
+	CityRepository cityRepository;
+	@Autowired
+	HotelRepository repository;
+
+	@Test
+	public void executesQueryMethodsCorrectly() {
+		City city = this.cityRepository
+				.findAll(new PageRequest(0, 1, Direction.ASC, "name")).getContent()
+				.get(0);
+		assertThat(city.getName()).isEqualTo("Atlanta");
+
+		Page<HotelSummary> hotels = this.repository.findByCity(city,
+				new PageRequest(0, 10, Direction.ASC, "name"));
+		Hotel hotel = this.repository.findByCityAndName(city,
+				hotels.getContent().get(0).getName());
+		assertThat(hotel.getName()).isEqualTo("Doubletree");
+
+		List<RatingCount> counts = this.repository.findRatingCounts(hotel);
+		assertThat(counts).hasSize(1);
+		assertThat(counts.get(0).getRating()).isEqualTo(Rating.AVERAGE);
+		assertThat(counts.get(0).getCount()).isGreaterThan(1L);
+	}
+}

spring-boot-samples/spring-boot-sample-hibernate4/src/test/resources/application-scratch.properties

+spring.datasource.name=scratchdb
+spring.jmx.default-domain=jpa.sample
\ No newline at end of file