#13 - Add @EnableR2dbcRepositories.

We now provide an annotation-based activation model for R2DBC repositories. Configuration classes can be annotated with @EnableR2dbcRepositories and configuration infrastructure will scan for bean definitions to implement declared R2DBC repositories.

Original pull request: #17.

src/test/java/org/springframework/data/r2dbc/repository/config/Person.java

@@ -0,0 +1,6 @@
+package org.springframework.data.r2dbc.repository.config;
+
+/**
+ * @author Mark Paluch
+ */
+class Person {}

src/test/java/org/springframework/data/r2dbc/repository/config/PersonRepository.java

@@ -0,0 +1,8 @@
+package org.springframework.data.r2dbc.repository.config;
+
+import org.springframework.data.r2dbc.repository.R2dbcRepository;
+
+/**
+ * @author Mark Paluch
+ */
+interface PersonRepository extends R2dbcRepository<Person, String> {}

src/test/java/org/springframework/data/r2dbc/repository/config/R2dbcRepositoriesRegistrarTests.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2016-2018 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 org.springframework.data.r2dbc.repository.config;
+
+import static org.mockito.Mockito.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.r2dbc.function.DatabaseClient;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+
+/**
+ * Integration tests for {@link R2dbcRepositoriesRegistrar}.
+ *
+ * @author Mark Paluch
+ */
+@RunWith(SpringRunner.class)
+@ContextConfiguration
+public class R2dbcRepositoriesRegistrarTests {
+
+	@Configuration
+	@EnableR2dbcRepositories(basePackages = "org.springframework.data.r2dbc.repository.config")
+	static class Config {
+
+		@Bean
+		public DatabaseClient databaseClient() {
+			return mock(DatabaseClient.class);
+		}
+	}
+
+	@Autowired PersonRepository personRepository;
+	@Autowired ApplicationContext context;
+
+	@Test // gh-13
+	public void testConfiguration() {}
+}

src/test/java/org/springframework/data/r2dbc/repository/config/R2dbcRepositoryConfigurationExtensionUnitTests.java

@@ -0,0 +1,110 @@
+/*
+ * Copyright 2016-2018 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 org.springframework.data.r2dbc.repository.config;
+
+import static org.junit.Assert.*;
+
+import java.util.Collection;
+
+import org.junit.Test;
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
+import org.springframework.beans.factory.support.DefaultListableBeanFactory;
+import org.springframework.core.env.Environment;
+import org.springframework.core.env.StandardEnvironment;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
+import org.springframework.core.type.StandardAnnotationMetadata;
+import org.springframework.data.r2dbc.repository.R2dbcRepository;
+import org.springframework.data.relational.core.mapping.Table;
+import org.springframework.data.repository.config.AnnotationRepositoryConfigurationSource;
+import org.springframework.data.repository.config.RepositoryConfiguration;
+import org.springframework.data.repository.config.RepositoryConfigurationSource;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+
+/**
+ * Unit tests for {@link R2dbcRepositoryConfigurationExtension}.
+ *
+ * @author Mark Paluch
+ */
+public class R2dbcRepositoryConfigurationExtensionUnitTests {
+
+	StandardAnnotationMetadata metadata = new StandardAnnotationMetadata(Config.class, true);
+	ResourceLoader loader = new PathMatchingResourcePatternResolver();
+	Environment environment = new StandardEnvironment();
+	BeanDefinitionRegistry registry = new DefaultListableBeanFactory();
+
+	RepositoryConfigurationSource configurationSource = new AnnotationRepositoryConfigurationSource(metadata,
+			EnableR2dbcRepositories.class, loader, environment, registry);
+
+	@Test // gh-13
+	public void isStrictMatchIfDomainTypeIsAnnotatedWithDocument() {
+
+		R2dbcRepositoryConfigurationExtension extension = new R2dbcRepositoryConfigurationExtension();
+		assertHasRepo(SampleRepository.class, extension.getRepositoryConfigurations(configurationSource, loader, true));
+	}
+
+	@Test // gh-13
+	public void isStrictMatchIfRepositoryExtendsStoreSpecificBase() {
+
+		R2dbcRepositoryConfigurationExtension extension = new R2dbcRepositoryConfigurationExtension();
+		assertHasRepo(StoreRepository.class, extension.getRepositoryConfigurations(configurationSource, loader, true));
+	}
+
+	@Test // gh-13
+	public void isNotStrictMatchIfDomainTypeIsNotAnnotatedWithDocument() {
+
+		R2dbcRepositoryConfigurationExtension extension = new R2dbcRepositoryConfigurationExtension();
+		assertDoesNotHaveRepo(UnannotatedRepository.class,
+				extension.getRepositoryConfigurations(configurationSource, loader, true));
+	}
+
+	private static void assertHasRepo(Class<?> repositoryInterface,
+			Collection<RepositoryConfiguration<RepositoryConfigurationSource>> configs) {
+
+		for (RepositoryConfiguration<?> config : configs) {
+			if (config.getRepositoryInterface().equals(repositoryInterface.getName())) {
+				return;
+			}
+		}
+
+		fail("Expected to find config for repository interface ".concat(repositoryInterface.getName()).concat(" but got ")
+				.concat(configs.toString()));
+	}
+
+	private static void assertDoesNotHaveRepo(Class<?> repositoryInterface,
+			Collection<RepositoryConfiguration<RepositoryConfigurationSource>> configs) {
+
+		for (RepositoryConfiguration<?> config : configs) {
+			if (config.getRepositoryInterface().equals(repositoryInterface.getName())) {
+				fail("Expected not to find config for repository interface ".concat(repositoryInterface.getName()));
+			}
+		}
+	}
+
+	@EnableR2dbcRepositories(considerNestedRepositories = true)
+	static class Config {}
+
+	@Table("sample")
+	static class Sample {}
+
+	static class Store {}
+
+	interface SampleRepository extends ReactiveCrudRepository<Sample, Long> {}
+
+	interface UnannotatedRepository extends ReactiveCrudRepository<Store, Long> {}
+
+	interface StoreRepository extends R2dbcRepository<Store, Long> {}
+}