DATAJPA-1287 - Export composable repositories via CDI.

We now export composable repositories through our CDI extension. Repositories can now be customized either by a single custom implementation (as it was before) and by providing fragment interfaces along their fragment implementation.

This change aligns CDI support with the existing RepositoryFactory support we provide within a Spring application context.

src/main/java/org/springframework/data/jpa/repository/cdi/JpaRepositoryBean.java

@@ -62,16 +62,13 @@ class JpaRepositoryBean<T> extends CdiRepositoryBean<T> {
 
 	/*
 	 * (non-Javadoc)
-	 * @see org.springframework.data.repository.cdi.CdiRepositoryBean#create(javax.enterprise.context.spi.CreationalContext, java.lang.Class, java.util.Optional)
+	 * @see org.springframework.data.repository.cdi.CdiRepositoryBean#create(javax.enterprise.context.spi.CreationalContext, java.lang.Class)
 	 */
 	@Override
-	public T create(CreationalContext<T> creationalContext, Class<T> repositoryType, Optional<Object> customImplementation) {
+	protected T create(CreationalContext<T> creationalContext, Class<T> repositoryType) {
 
-		// Get an instance from the associated entity manager bean.
 		EntityManager entityManager = getDependencyInstance(entityManagerBean, EntityManager.class);
 
-		// Create the JPA repository instance and return it.
-		JpaRepositoryFactory factory = new JpaRepositoryFactory(entityManager);
-		return customImplementation.isPresent() ? factory.getRepository(repositoryType, customImplementation.get()) : factory.getRepository(repositoryType);
+		return create(() -> new JpaRepositoryFactory(entityManager), repositoryType);
 	}
 }

src/test/java/org/springframework/data/jpa/repository/cdi/CdiExtensionIntegrationTests.java

@@ -85,6 +85,13 @@ public class CdiExtensionIntegrationTests {
 	public void useQualifiedCustomizedUserRepo() {
 
 		RepositoryConsumer repositoryConsumer = container.select(RepositoryConsumer.class).get();
-		repositoryConsumer.doSomethonOnUserDB();
+		repositoryConsumer.doSomethingOnUserDB();
+	}
+
+	@Test // DATAJPA-1287
+	public void useQualifiedFragmentUserRepo() {
+
+		RepositoryConsumer repositoryConsumer = container.select(RepositoryConsumer.class).get();
+		assertThat(repositoryConsumer.returnOneUserDB(), is(1));
 	}
 }

src/test/java/org/springframework/data/jpa/repository/cdi/QualifiedCustomizedUserRepository.java

@@ -13,7 +13,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
 package org.springframework.data.jpa.repository.cdi;
 
 import org.springframework.data.jpa.domain.sample.User;
@@ -24,6 +23,6 @@ import org.springframework.data.repository.Repository;
  */
 @UserDB
 public interface QualifiedCustomizedUserRepository extends Repository<User, Long>,
-		QualifiedCustomizedUserRepositoryCustom {
+		QualifiedCustomizedUserRepositoryCustom, QualifiedFragment {
 
 }

src/test/java/org/springframework/data/jpa/repository/cdi/QualifiedFragment.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 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.jpa.repository.cdi;
+
+/**
+ * @author Mark Paluch
+ */
+public interface QualifiedFragment {
+	int returnOne();
+}

src/test/java/org/springframework/data/jpa/repository/cdi/QualifiedFragmentBean.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 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.jpa.repository.cdi;
+
+/**
+ * @author Mark Paluch
+ */
+@UserDB
+public class QualifiedFragmentBean implements QualifiedFragment {
+
+	@Override
+	public int returnOne() {
+		return 1;
+	}
+}

src/test/java/org/springframework/data/jpa/repository/cdi/RepositoryConsumer.java

@@ -43,7 +43,11 @@ class RepositoryConsumer {
 		return samplePersonRepository.returnOne();
 	}
 
-	public void doSomethonOnUserDB() {
+	public void doSomethingOnUserDB() {
 		qualifiedCustomizedUserRepository.doSomething();
 	}
+
+	public int returnOneUserDB() {
+		return qualifiedCustomizedUserRepository.returnOne();
+	}
 }