From d748923519ecb0094afec240eadbefce23223671 Mon Sep 17 00:00:00 2001
From: Oliver Gierke <ogierke@gopivotal.com>
Date: Mon, 7 Jul 2014 16:08:05 +0200
Subject: [PATCH] Added sample for invocation of JDK 8 default method on a
 repository.

---
 jpa/java8/pom.xml                                      |  4 ++++
 .../springdata/jpa/java8/CustomerRepository.java       |  6 ++++++
 .../springdata/jpa/java8/Java8IntegrationTests.java    | 10 ++++++++++
 3 files changed, 20 insertions(+)

diff --git a/jpa/java8/pom.xml b/jpa/java8/pom.xml
index 1e6a5eb7..653c7884 100644
--- a/jpa/java8/pom.xml
+++ b/jpa/java8/pom.xml
@@ -10,6 +10,10 @@
 
 	<artifactId>spring-data-jpa-java8</artifactId>
 	<name>Spring Data JPA - Java 8 specific features</name>
+	
+	<properties>
+		<spring-data-releasetrain.version>Evans-BUILD-SNAPSHOT</spring-data-releasetrain.version>
+	</properties>
 
 	<dependencies>
 
diff --git a/jpa/java8/src/main/java/example/springdata/jpa/java8/CustomerRepository.java b/jpa/java8/src/main/java/example/springdata/jpa/java8/CustomerRepository.java
index d4113f42..d1d0c491 100644
--- a/jpa/java8/src/main/java/example/springdata/jpa/java8/CustomerRepository.java
+++ b/jpa/java8/src/main/java/example/springdata/jpa/java8/CustomerRepository.java
@@ -36,4 +36,10 @@ public interface CustomerRepository extends Repository<Customer, Long> {
 	Optional<Customer> findOne(Long id);
 
 	<S extends Customer> S save(S customer);
+
+	Optional<Customer> findByLastname(String lastname);
+
+	default Optional<Customer> findByLastname(Customer customer) {
+		return findByLastname(customer.lastname);
+	}
 }
diff --git a/jpa/java8/src/test/java/example/springdata/jpa/java8/Java8IntegrationTests.java b/jpa/java8/src/test/java/example/springdata/jpa/java8/Java8IntegrationTests.java
index 7a8d8f76..4275ab9e 100644
--- a/jpa/java8/src/test/java/example/springdata/jpa/java8/Java8IntegrationTests.java
+++ b/jpa/java8/src/test/java/example/springdata/jpa/java8/Java8IntegrationTests.java
@@ -56,4 +56,14 @@ public class Java8IntegrationTests {
 		assertThat(customer.createdDate, is(notNullValue()));
 		assertThat(customer.modifiedDate, is(notNullValue()));
 	}
+
+	@Test
+	public void invokesDefaultMethod() {
+
+		Customer customer = repository.save(new Customer("Dave", "Matthews"));
+		Optional<Customer> result = repository.findByLastname(customer);
+
+		assertThat(result.isPresent(), is(true));
+		assertThat(result.get(), is(customer));
+	}
 }