DATAJPA-1230 - Make JpaRepositoryFactory agnostic of JpaRepository implementation

src/main/java/org/springframework/data/jpa/repository/support/JpaRepositoryFactory.java

@@ -46,6 +46,7 @@ import org.springframework.util.Assert;
  * @author Mark Paluch
  * @author Christoph Strobl
  * @author Jens Schauder
+ * @author Stefan Fussenegger
  */
 public class JpaRepositoryFactory extends RepositoryFactorySupport {
 
@@ -87,8 +88,11 @@ public class JpaRepositoryFactory extends RepositoryFactorySupport {
 	@Override
 	protected Object getTargetRepository(RepositoryInformation information) {
 
-		SimpleJpaRepository<?, ?> repository = getTargetRepository(information, entityManager);
-		repository.setRepositoryMethodMetadata(crudMethodMetadataPostProcessor.getCrudMethodMetadata());
+		Object repository = getTargetRepository(information, entityManager);
+		if (repository instanceof RepositoryMethodMetadataAware) {
+			((RepositoryMethodMetadataAware) repository)
+					.setRepositoryMethodMetadata(crudMethodMetadataPostProcessor.getCrudMethodMetadata());
+		}
 
 		return repository;
 	}
@@ -101,8 +105,7 @@ public class JpaRepositoryFactory extends RepositoryFactorySupport {
 	 * @param entityManager
 	 * @return
 	 */
-	protected <T, ID extends Serializable> SimpleJpaRepository<?, ?> getTargetRepository(
-			RepositoryInformation information, EntityManager entityManager) {
+	protected Object getTargetRepository(RepositoryInformation information, EntityManager entityManager) {
 
 		JpaEntityInformation<?, Serializable> entityInformation = getEntityInformation(information.getDomainType());
 

src/main/java/org/springframework/data/jpa/repository/support/RepositoryMethodMetadataAware.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2017 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.support;
+
+import org.springframework.data.jpa.repository.support.CrudMethodMetadata;
+
+/**
+ * implemented by {@link org.springframework.data.jpa.repository.JpaRepository} implementations requiring
+ * {@link CrudMethodMetadata}
+ * 
+ * @author Stefan Fussenegger
+ */
+public interface RepositoryMethodMetadataAware {
+
+	void setRepositoryMethodMetadata(CrudMethodMetadata crudMethodMetadata);
+
+}

src/main/java/org/springframework/data/jpa/repository/support/SimpleJpaRepository.java

@@ -67,12 +67,14 @@ import org.springframework.util.Assert;
  * @author Thomas Darimont
  * @author Mark Paluch
  * @author Christoph Strobl
+ * @author Stefan Fussenegger
  * @param <T> the type of the entity to handle
  * @param <ID> the type of the entity's identifier
  */
 @Repository
 @Transactional(readOnly = true)
-public class SimpleJpaRepository<T, ID> implements JpaRepository<T, ID>, JpaSpecificationExecutor<T> {
+public class SimpleJpaRepository<T, ID>
+		implements JpaRepository<T, ID>, JpaSpecificationExecutor<T>, RepositoryMethodMetadataAware {
 
 	private static final String ID_MUST_NOT_BE_NULL = "The given id must not be null!";