DATAMONGO-780 - Add support for nested repositories.

Support for considering nested repository interfaces can now be configured on the EnableMongoRepositories annotation via the considerNestedRepositories property.

Original pull request: #87.

spring-data-mongodb/src/main/java/org/springframework/data/mongodb/repository/config/EnableMongoRepositories.java

@@ -35,6 +35,7 @@
  * {@link #basePackages()} or {@link #basePackageClasses()} it will trigger scanning of the package of annotated class.
  * 
  * @author Oliver Gierke
+ * @author Thomas Darimont
  */
 @Target(ElementType.TYPE)
 @Retention(RetentionPolicy.RUNTIME)
@@ -119,4 +120,10 @@
 	 * @return
 	 */
 	boolean createIndexesForQueryMethods() default false;
+
+	/**
+	 * Configures whether nested repository-interfaces (e.g. defined as inner classes) should be discovered by the
+	 * repositories infrastructure.
+	 */
+	boolean considerNestedRepositories() default false;
 }

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/ClassWithNestedRepository.java

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2013 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.mongodb.repository;
+
+/**
+ * @see DATAMONGO-780
+ * @author Thomas Darimont
+ */
+public class ClassWithNestedRepository {
+
+	public static interface NestedUserRepository extends MongoRepository<User, Integer> {}
+}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/config/AllowNestedMongoRepositoriesRepositoryConfigTests.java

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2013 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.mongodb.repository.config;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.mongodb.repository.ClassWithNestedRepository.NestedUserRepository;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+/**
+ * Integration test for repository namespace configuration with nested repositories.
+ * 
+ * @author Thomas Darimont
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(locations = "AllowNestedMongoRepositoriesRepositoryConfigTests-context.xml")
+public class AllowNestedMongoRepositoriesRepositoryConfigTests {
+
+	@Autowired NestedUserRepository fooRepository;
+
+	/**
+	 * @see DATAMONGO-780
+	 */
+	@Test
+	public void shouldFindNestedRepository() {
+		assertThat(fooRepository, is(notNullValue()));
+	}
+}

spring-data-mongodb/src/test/java/org/springframework/data/mongodb/repository/config/NestedMongoRepositoriesJavaConfigTests.java

@@ -0,0 +1,55 @@
+/*
+ * Copyright 2013 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.mongodb.repository.config;
+
+import static org.hamcrest.CoreMatchers.*;
+import static org.junit.Assert.*;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.ImportResource;
+import org.springframework.data.mongodb.repository.ClassWithNestedRepository.NestedUserRepository;
+import org.springframework.data.mongodb.repository.PersonRepository;
+import org.springframework.data.repository.support.Repositories;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+/**
+ * Integration test for the combination of JavaConfig and an {@link Repositories} wrapper.
+ * 
+ * @author Thomas Darimont
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration
+public class NestedMongoRepositoriesJavaConfigTests {
+
+	@Configuration
+	@EnableMongoRepositories(basePackageClasses = PersonRepository.class, considerNestedRepositories = true)
+	@ImportResource("classpath:infrastructure.xml")
+	static class Config {}
+
+	@Autowired NestedUserRepository nestedUserRepository;
+
+	/**
+	 * @see DATAMONGO-780
+	 */
+	@Test
+	public void shouldSupportNestedRepositories() {
+		assertThat(nestedUserRepository, is(notNullValue()));
+	}
+}

spring-data-mongodb/src/test/resources/org/springframework/data/mongodb/repository/config/AllowNestedMongoRepositoriesRepositoryConfigTests-context.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:mongo="http://www.springframework.org/schema/data/mongo"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xmlns:repository="http://www.springframework.org/schema/data/repository"
+	xmlns:util="http://www.springframework.org/schema/util"
+	xsi:schemaLocation="http://www.springframework.org/schema/data/mongo http://www.springframework.org/schema/data/mongo/spring-mongo.xsd
+		http://www.springframework.org/schema/data/repository http://www.springframework.org/schema/data/repository/spring-repository.xsd
+		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
+		http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
+
+	<import resource="classpath:infrastructure.xml"/>
+
+	<mongo:repositories base-package="org.springframework.data.mongodb.repository" consider-nested-repositories="true"/>
+</beans>