Spring MVC Repository and Hibernate - spring

Question

Following Spring docs, I've created a maven project with the following dependencies :
<dependencies>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.3-1102-jdbc41</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
I'd like to know if Repository data abstraction "goes through" hibernate or not.

Answer 1

From the reference documentation:
28.3 JPA and ‘Spring Data’
The Java Persistence API is a standard technology that allows you to ‘map’ objects to relational databases. The spring-boot-starter-data-jpa POM provides a quick way to get started. It provides the following key dependencies:
Hibernate — One of the most popular JPA implementations.
Spring Data JPA — Makes it easy to easily implement JPA-based repositories.
Spring ORMs — Core ORM support from the Spring Framework.
So the answer is "Yes".
BTW, Spring will create and bootstrap automatically an EntityManagerFactory and DataSource beans by declaring a spring-boot-starter-data-jpa dependency.

Answer 2

If you are unsure which dependencies your project have, you can use the maven-dependency-plugin. Specifically, you can use dependency:tree to get a hierarchal tree view of all dependencies and their transitive dependencies (or dependency:list to get a plain list), e.g.
$ mvn dependency:tree
And to answer your question: Yes, spring-boot-starter-data-jpa does depend on Hibernate:
[INFO] +- org.springframework.boot:spring-boot-starter-data-jpa:jar:1.2.0.RELEASE:compile
[INFO] | +-
[INFO] | +- org.hibernate:hibernate-entitymanager:jar:4.3.7.Final:compile
[INFO] | | +-
[INFO] | | +- org.hibernate:hibernate-core:jar:4.3.7.Final:compile
[INFO] | | | +-
[INFO] | | +-
[INFO] | | +- org.hibernate.common:hibernate-commons-annotations:jar:4.0.5.Final:compile
[INFO] | | +- org.hibernate.javax.persistence:hibernate-jpa-2.1-api:jar:1.0.0.Final:compile
[INFO] | | +-