From 1c5adcf2124f648d1df1845773dc6c3f63f0a85e Mon Sep 17 00:00:00 2001
From: Gustavo Martin Morcuende <gu.martinm@gmail.com>
Date: Sun, 3 Jul 2016 20:10:38 +0200
Subject: [PATCH] Spring JPA:
 org.springframework.data.jpa.repository.support.SimpleJpaRepository is the
 default implementation for any Spring repository.

SimpleJpaRepository annotates methods with @Transactional
---
 .../example/persistence/repository/AdDescriptionRepository.java    | 7 +++++++
 .../de/spring/example/persistence/repository/AdRepository.java     | 7 +++++++
 .../main/java/de/spring/example/rest/controllers/AdController.java | 4 ++++
 3 files changed, 18 insertions(+)

diff --git a/SpringJava/JPA/src/main/java/de/spring/example/persistence/repository/AdDescriptionRepository.java b/SpringJava/JPA/src/main/java/de/spring/example/persistence/repository/AdDescriptionRepository.java
index 8116883..183ae4d 100644
--- a/SpringJava/JPA/src/main/java/de/spring/example/persistence/repository/AdDescriptionRepository.java
+++ b/SpringJava/JPA/src/main/java/de/spring/example/persistence/repository/AdDescriptionRepository.java
@@ -7,6 +7,13 @@ import org.springframework.data.repository.PagingAndSortingRepository;
 import de.spring.example.persistence.domain.Ad;
 import de.spring.example.persistence.domain.AdDescription;
 
+/**
+ * By default <code>org.springframework.data.jpa.repository.support.SimpleJpaRepository<code>
+ * will be the implementation for this interface.
+ * 
+ * Be careful with <code>@Transactional</code>. SimpleJpaRepository has annotated methods.
+ *
+ */
 public interface AdDescriptionRepository extends PagingAndSortingRepository<AdDescription, Long> {
 
 	// Custom Query method
diff --git a/SpringJava/JPA/src/main/java/de/spring/example/persistence/repository/AdRepository.java b/SpringJava/JPA/src/main/java/de/spring/example/persistence/repository/AdRepository.java
index a9b204f..592e241 100644
--- a/SpringJava/JPA/src/main/java/de/spring/example/persistence/repository/AdRepository.java
+++ b/SpringJava/JPA/src/main/java/de/spring/example/persistence/repository/AdRepository.java
@@ -6,6 +6,13 @@ import org.springframework.data.repository.query.Param;
 
 import de.spring.example.persistence.domain.Ad;
 
+/**
+ * By default <code>org.springframework.data.jpa.repository.support.SimpleJpaRepository<code>
+ * will be the implementation for this interface.
+ * 
+ * Be careful with <code>@Transactional</code>. SimpleJpaRepository has annotated methods.
+ *
+ */
 public interface AdRepository extends PagingAndSortingRepository<Ad, Long> {
 	
 	// Named Native Query (using the native language of the store) It is not portable.
diff --git a/SpringJava/JPA/src/main/java/de/spring/example/rest/controllers/AdController.java b/SpringJava/JPA/src/main/java/de/spring/example/rest/controllers/AdController.java
index 976a1df..edbf37d 100644
--- a/SpringJava/JPA/src/main/java/de/spring/example/rest/controllers/AdController.java
+++ b/SpringJava/JPA/src/main/java/de/spring/example/rest/controllers/AdController.java
@@ -20,4 +20,8 @@ public class AdController extends RepositoryBasedRestController<Ad, Long, AdRepo
     }
     
 	// I do not have to do anything here because all I need is implemented by RepositoryBasedRestController :)
+
+    // @Transactional is implemented by org.springframework.data.jpa.repository.support.SimpleJpaRepository
+    // By default, SimpleJpaRepository will be automatically implemented by my
+    // Spring JPA repositories: AdRepository and AdDescriptionRepository.
 }
-- 
2.1.4