thomasdarimont/Application.java

## Application.java
package demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.envers.repository.support.EnversRevisionRepositoryFactoryBean;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

@Configuration
@ComponentScan
@EnableJpaRepositories(repositoryFactoryBeanClass = EnversRevisionRepositoryFactoryBean.class)
@EnableAutoConfiguration
public class Application {

	public static void main(String[] args) {
		SpringApplication.run(Application.class, args);
	}
}

## 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>

	<groupId>org.springframework.data.example</groupId>
	<artifactId>spring-data-jpa-envers-example</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>spring-data-jpa-envers-example</name>
	<description>Demo project for Spring Boot</description>

	<parent>
		<groupId>org.springframework.boot</groupId>
		<artifactId>spring-boot-starter-parent</artifactId>
		<version>1.1.8.RELEASE</version>
		<relativePath /> <!-- lookup parent from repository -->
	</parent>

	<dependencies>
		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-data-jpa</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.data</groupId>
			<artifactId>spring-data-envers</artifactId>
			<version>0.3.0.BUILD-SNAPSHOT</version>
		</dependency>

		<dependency>
			<groupId>org.projectlombok</groupId>
			<artifactId>lombok</artifactId>
			<version>1.14.8</version>
		</dependency>

		<dependency>
			<groupId>org.hsqldb</groupId>
			<artifactId>hsqldb</artifactId>
		</dependency>

		<dependency>
			<groupId>org.springframework.boot</groupId>
			<artifactId>spring-boot-starter-test</artifactId>
			<scope>test</scope>
		</dependency>

		<dependency>
			<groupId>org.assertj</groupId>
			<artifactId>assertj-core</artifactId>
			<version>1.7.0</version>
			<scope>test</scope>
		</dependency>
	</dependencies>

	<properties>
		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
		<start-class>demo.Application</start-class>
		<java.version>1.8</java.version>
	</properties>

	<build>
		<plugins>
			<plugin>
				<groupId>org.springframework.boot</groupId>
				<artifactId>spring-boot-maven-plugin</artifactId>
			</plugin>
		</plugins>
	</build>

</project>

## TVServiceTests.java
package demo.tv;

import static org.assertj.core.api.Assertions.*;

import java.util.concurrent.TimeUnit;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import demo.Application;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = Application.class)
public class TVServiceTests {

	@Autowired TvSetRepository repository;
	@Autowired TvSetService service;

	@Before
	public void setup() {
		repository.deleteAll();
	}

	@Test
	public void revisionsShouldWork() throws Exception {

		TvSet tv1 = service.addTVSet();
		TimeUnit.SECONDS.sleep(1);
		TvSet tv2 = service.addTVSet();

		service.updateTVSet(tv1.getId());
		service.updateTVSet(tv1.getId());

		String history1 = service.getHistory(tv1.getId());
		System.out.println(history1);
		String history2 = service.getHistory(tv2.getId());
		System.out.println(history2);

		assertThat(history1).isNotNull();
		assertThat(history2).isNotNull();
	}
}

## TvSet.java
package demo.tv;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;

import lombok.Data;

import org.hibernate.envers.Audited;

@Data
@Entity
@Audited
public class TvSet {

	@Id @GeneratedValue//
	private long id;
	private String manufacturer;
	private String modelYear;
	private long udid;
}

## TvSetRepository.java
package demo.tv;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.repository.history.RevisionRepository;

interface TvSetRepository extends RevisionRepository<TvSet, Long, Integer>, JpaRepository<TvSet, Long> {}

## TvSetService.java
package demo.tv;

import static java.lang.String.*;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.history.Revision;
import org.springframework.data.history.Revisions;
import org.springframework.stereotype.Service;

@Service
public class TvSetService {

	private static final String HISTORY_ENTRY_TEMPLATE = "No: %s, at: %s, TVSet UDID: %s<br />";

	@Autowired//
	private TvSetRepository tvSetRepository;

	public TvSet addTVSet() {

		TvSet tvSet = new TvSet();
		tvSet.setManufacturer("Toshiba");
		tvSet.setUdid(System.currentTimeMillis());

		return tvSetRepository.save(tvSet);
	}

	public void updateTVSet(long id) {

		TvSet tvSet = tvSetRepository.findOne(id);
		tvSet.setUdid(System.currentTimeMillis());

		tvSetRepository.save(tvSet);
	}

	public String getHistory(long id) {

		Revisions<Integer, TvSet> revisions = tvSetRepository.findRevisions(id);
		StringBuilder historyText = new StringBuilder();

		for (Revision<Integer, TvSet> entry : revisions.getContent()) {
			historyText.append(format(HISTORY_ENTRY_TEMPLATE, entry.getRevisionNumber(), entry.getRevisionDate(), entry
					.getEntity().getUdid()));
		}

		return historyText.toString();
	}
}
	package demo;

	import org.springframework.boot.SpringApplication;
	import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
	import org.springframework.context.annotation.ComponentScan;
	import org.springframework.context.annotation.Configuration;
	import org.springframework.data.envers.repository.support.EnversRevisionRepositoryFactoryBean;
	import org.springframework.data.jpa.repository.config.EnableJpaRepositories;

	@Configuration
	@ComponentScan
	@EnableJpaRepositories(repositoryFactoryBeanClass = EnversRevisionRepositoryFactoryBean.class)
	@EnableAutoConfiguration
	public class Application {

	public static void main(String[] args) {
	SpringApplication.run(Application.class, args);
	}
	}
	<?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>

	<groupId>org.springframework.data.example</groupId>
	<artifactId>spring-data-jpa-envers-example</artifactId>
	<version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

	<name>spring-data-jpa-envers-example</name>
	<description>Demo project for Spring Boot</description>

	<parent>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-parent</artifactId>
	<version>1.1.8.RELEASE</version>
	<relativePath /> <!-- lookup parent from repository -->
	</parent>

	<dependencies>
	<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-data-jpa</artifactId>
	</dependency>

	<dependency>
	<groupId>org.springframework.data</groupId>
	<artifactId>spring-data-envers</artifactId>
	<version>0.3.0.BUILD-SNAPSHOT</version>
	</dependency>

	<dependency>
	<groupId>org.projectlombok</groupId>
	<artifactId>lombok</artifactId>
	<version>1.14.8</version>
	</dependency>

	<dependency>
	<groupId>org.hsqldb</groupId>
	<artifactId>hsqldb</artifactId>
	</dependency>

	<dependency>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-starter-test</artifactId>
	<scope>test</scope>
	</dependency>

	<dependency>
	<groupId>org.assertj</groupId>
	<artifactId>assertj-core</artifactId>
	<version>1.7.0</version>
	<scope>test</scope>
	</dependency>
	</dependencies>

	<properties>
	<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
	<start-class>demo.Application</start-class>
	<java.version>1.8</java.version>
	</properties>

	<build>
	<plugins>
	<plugin>
	<groupId>org.springframework.boot</groupId>
	<artifactId>spring-boot-maven-plugin</artifactId>
	</plugin>
	</plugins>
	</build>

	</project>
	package demo.tv;

	import static org.assertj.core.api.Assertions.*;

	import java.util.concurrent.TimeUnit;

	import org.junit.Before;
	import org.junit.Test;
	import org.junit.runner.RunWith;
	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.test.context.ContextConfiguration;
	import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

	import demo.Application;

	@RunWith(SpringJUnit4ClassRunner.class)
	@ContextConfiguration(classes = Application.class)
	public class TVServiceTests {

	@Autowired TvSetRepository repository;
	@Autowired TvSetService service;

	@Before
	public void setup() {
	repository.deleteAll();
	}

	@Test
	public void revisionsShouldWork() throws Exception {

	TvSet tv1 = service.addTVSet();
	TimeUnit.SECONDS.sleep(1);
	TvSet tv2 = service.addTVSet();

	service.updateTVSet(tv1.getId());
	service.updateTVSet(tv1.getId());

	String history1 = service.getHistory(tv1.getId());
	System.out.println(history1);
	String history2 = service.getHistory(tv2.getId());
	System.out.println(history2);

	assertThat(history1).isNotNull();
	assertThat(history2).isNotNull();
	}
	}
	package demo.tv;

	import javax.persistence.Entity;
	import javax.persistence.GeneratedValue;
	import javax.persistence.Id;

	import lombok.Data;

	import org.hibernate.envers.Audited;

	@Data
	@Entity
	@Audited
	public class TvSet {

	@Id @GeneratedValue//
	private long id;
	private String manufacturer;
	private String modelYear;
	private long udid;
	}
	package demo.tv;

	import org.springframework.data.jpa.repository.JpaRepository;
	import org.springframework.data.repository.history.RevisionRepository;

	interface TvSetRepository extends RevisionRepository<TvSet, Long, Integer>, JpaRepository<TvSet, Long> {}
	package demo.tv;

	import static java.lang.String.*;

	import org.springframework.beans.factory.annotation.Autowired;
	import org.springframework.data.history.Revision;
	import org.springframework.data.history.Revisions;
	import org.springframework.stereotype.Service;

	@Service
	public class TvSetService {

	private static final String HISTORY_ENTRY_TEMPLATE = "No: %s, at: %s, TVSet UDID: %s<br />";

	@Autowired//
	private TvSetRepository tvSetRepository;

	public TvSet addTVSet() {

	TvSet tvSet = new TvSet();
	tvSet.setManufacturer("Toshiba");
	tvSet.setUdid(System.currentTimeMillis());

	return tvSetRepository.save(tvSet);
	}

	public void updateTVSet(long id) {

	TvSet tvSet = tvSetRepository.findOne(id);
	tvSet.setUdid(System.currentTimeMillis());

	tvSetRepository.save(tvSet);
	}

	public String getHistory(long id) {

	Revisions<Integer, TvSet> revisions = tvSetRepository.findRevisions(id);
	StringBuilder historyText = new StringBuilder();

	for (Revision<Integer, TvSet> entry : revisions.getContent()) {
	historyText.append(format(HISTORY_ENTRY_TEMPLATE, entry.getRevisionNumber(), entry.getRevisionDate(), entry
	.getEntity().getUdid()));
	}

	return historyText.toString();
	}
	}