Add auto-configuration for Spring Data Envers

spring-boot-project/spring-boot-autoconfigure/build.gradle

@@ -112,6 +112,7 @@ dependencies {
 	optional("org.springframework.batch:spring-batch-core")
 	optional("org.springframework.data:spring-data-couchbase")
 	optional("org.springframework.data:spring-data-jpa")
+	optional("org.springframework.data:spring-data-envers")
 	optional("org.springframework.data:spring-data-rest-webmvc")
 	optional("org.springframework.data:spring-data-cassandra")
 	optional("org.springframework.data:spring-data-elasticsearch") {

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/jpa/EnversRevisionRepositoriesRegistrar.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2012-2020 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
+ *
+ *      https://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 org.springframework.boot.autoconfigure.data.jpa;
+
+import org.springframework.context.annotation.ImportBeanDefinitionRegistrar;
+import org.springframework.data.envers.repository.support.EnversRevisionRepositoryFactoryBean;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+
+/**
+ * {@link ImportBeanDefinitionRegistrar} used to auto-configure Spring Data Envers
+ * Repositories.
+ *
+ * @author Stefano Cordio
+ */
+class EnversRevisionRepositoriesRegistrar extends JpaRepositoriesRegistrar {
+
+	@Override
+	protected Class<?> getConfiguration() {
+		return EnableJpaRepositoriesConfiguration.class;
+	}
+
+	@EnableJpaRepositories(repositoryFactoryBeanClass = EnversRevisionRepositoryFactoryBean.class)
+	private static class EnableJpaRepositoriesConfiguration {
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/jpa/JpaRepositoriesAutoConfiguration.java

@@ -26,6 +26,7 @@
 import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingClass;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.autoconfigure.orm.jpa.EntityManagerFactoryBuilderCustomizer;
 import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
@@ -35,6 +36,7 @@
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.Import;
 import org.springframework.core.task.AsyncTaskExecutor;
+import org.springframework.data.envers.repository.support.EnversRevisionRepositoryFactoryBean;
 import org.springframework.data.jpa.repository.JpaRepository;
 import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 import org.springframework.data.jpa.repository.config.JpaRepositoryConfigExtension;
@@ -52,11 +54,19 @@
  * Once in effect, the auto-configuration is the equivalent of enabling JPA repositories
  * using the {@link EnableJpaRepositories @EnableJpaRepositories} annotation.
  * <p>
+ * In case
+ * {@link org.springframework.data.envers.repository.support.EnversRevisionRepositoryFactoryBean}
+ * is on the classpath, it is used instead of
+ * {@link org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean} to
+ * support {@link org.springframework.data.repository.history.RevisionRepository} with
+ * Hibernate Envers.
+ * <p>
  * This configuration class will activate <em>after</em> the Hibernate auto-configuration.
  *
  * @author Phillip Webb
  * @author Josh Long
  * @author Scott Frederick
+ * @author Stefano Cordio
  * @since 1.0.0
  * @see EnableJpaRepositories
  */
@@ -66,7 +76,6 @@
 @ConditionalOnMissingBean({ JpaRepositoryFactoryBean.class, JpaRepositoryConfigExtension.class })
 @ConditionalOnProperty(prefix = "spring.data.jpa.repositories", name = "enabled", havingValue = "true",
 		matchIfMissing = true)
-@Import(JpaRepositoriesRegistrar.class)
 @AutoConfigureAfter({ HibernateJpaAutoConfiguration.class, TaskExecutionAutoConfiguration.class })
 public class JpaRepositoriesAutoConfiguration {
 
@@ -109,4 +118,18 @@ static class LazyBootstrapMode {
 
 	}
 
+	@Configuration(proxyBeanMethods = false)
+	@ConditionalOnClass(EnversRevisionRepositoryFactoryBean.class)
+	@Import(EnversRevisionRepositoriesRegistrar.class)
+	public static class EnversRevisionRepositoriesRegistrarConfiguration {
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@ConditionalOnMissingClass("org.springframework.data.envers.repository.support.EnversRevisionRepositoryFactoryBean")
+	@Import(JpaRepositoriesRegistrar.class)
+	public static class JpaRepositoriesRegistrarConfiguration {
+
+	}
+
 }

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/jpa/EnversRevisionRepositoriesAutoConfigurationTests.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2012-2020 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
+ *
+ *      https://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 org.springframework.boot.autoconfigure.data.jpa;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.TestAutoConfigurationPackage;
+import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoConfiguration;
+import org.springframework.boot.autoconfigure.data.jpa.country.Country;
+import org.springframework.boot.autoconfigure.data.jpa.country.CountryRepository;
+import org.springframework.boot.autoconfigure.jdbc.EmbeddedDataSourceConfiguration;
+import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Configuration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link JpaRepositoriesAutoConfiguration} with Spring Data Envers on the
+ * classpath.
+ *
+ * @author Stefano Cordio
+ */
+class EnversRevisionRepositoriesAutoConfigurationTests extends JpaRepositoriesAutoConfigurationTests {
+
+	@BeforeEach
+	void setup() {
+		this.contextRunner = new ApplicationContextRunner()
+				.withConfiguration(AutoConfigurations.of(HibernateJpaAutoConfiguration.class,
+						JpaRepositoriesAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class))
+				.withUserConfiguration(EmbeddedDataSourceConfiguration.class);
+	}
+
+	@Test
+	void autoConfigurationShouldSucceedWithRevisionRepository() {
+		this.contextRunner.withUserConfiguration(TestConfiguration.class).run((context) -> {
+			assertThat(context).hasSingleBean(CountryRepository.class);
+		});
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@TestAutoConfigurationPackage(Country.class)
+	static class TestConfiguration {
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/jpa/JpaRepositoriesAutoConfigurationTests.java

@@ -32,13 +32,15 @@
 import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
 import org.springframework.boot.autoconfigure.task.TaskExecutionAutoConfiguration;
 import org.springframework.boot.autoconfigure.task.TaskSchedulingAutoConfiguration;
+import org.springframework.boot.test.context.FilteredClassLoader;
 import org.springframework.boot.test.context.runner.ApplicationContextRunner;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.ComponentScan.Filter;
 import org.springframework.context.annotation.Configuration;
 import org.springframework.context.annotation.FilterType;
 import org.springframework.context.annotation.Import;
 import org.springframework.core.task.SimpleAsyncTaskExecutor;
+import org.springframework.data.envers.repository.support.EnversRevisionRepositoryFactoryBean;
 import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
 import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
 import org.springframework.scheduling.annotation.EnableScheduling;
@@ -47,15 +49,18 @@
 import static org.assertj.core.api.Assertions.assertThat;
 
 /**
- * Tests for {@link JpaRepositoriesAutoConfiguration}.
+ * Tests for {@link JpaRepositoriesAutoConfiguration} without Spring Data Envers on the
+ * classpath.
  *
  * @author Dave Syer
  * @author Oliver Gierke
  * @author Scott Frederick
+ * @author Stefano Cordio
  */
 class JpaRepositoriesAutoConfigurationTests {
 
-	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+	ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withClassLoader(new FilteredClassLoader(EnversRevisionRepositoryFactoryBean.class))
 			.withConfiguration(AutoConfigurations.of(HibernateJpaAutoConfiguration.class,
 					JpaRepositoriesAutoConfiguration.class, PropertyPlaceholderAutoConfiguration.class))
 			.withUserConfiguration(EmbeddedDataSourceConfiguration.class);

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/jpa/country/Country.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2012-2019 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
+ *
+ *      https://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 org.springframework.boot.autoconfigure.data.jpa.country;
+
+import org.hibernate.envers.Audited;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import java.io.Serializable;
+
+@Entity
+public class Country implements Serializable {
+
+	private static final long serialVersionUID = 1L;
+
+	@Id
+	@GeneratedValue
+	private Long id;
+
+	@Audited
+	@Column
+	private String name;
+
+	public Long getId() {
+		return id;
+	}
+
+	public void setId(Long id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/data/jpa/country/CountryRepository.java

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2012-2019 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
+ *
+ *      https://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 org.springframework.boot.autoconfigure.data.jpa.country;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.repository.history.RevisionRepository;
+
+public interface CountryRepository extends JpaRepository<Country, Long>, RevisionRepository<Country, Long, Integer> {
+
+}