[Week9][Chap4] Feat : 메소드 이름으로 쿼리 생성 (#108)

이진우/spring_data_jpa_jinu/data-jpa/src/main/java/study/datajpa/repository/MemberJpaRepository.java

@@ -40,4 +40,11 @@ public Member find(Long id){
         return em.find(Member.class,id);
     }
 
+    public List<Member> findByUsernameAndAgeGreaterThan(String username, int age){
+        return em.createQuery("select m from Member m where m.username = :username and m.age > :age")
+                .setParameter("username",username)
+                .setParameter("age",age)
+                .getResultList();
+    }
+
 }

이진우/spring_data_jpa_jinu/data-jpa/src/main/java/study/datajpa/repository/MemberRepository.java

@@ -3,5 +3,8 @@
 import org.springframework.data.jpa.repository.JpaRepository;
 import study.datajpa.entity.Member;
 
+import java.util.List;
+
 public interface MemberRepository extends JpaRepository<Member,Long> {
+    public List<Member> findByUsernameAndAgeGreaterThan(String username,int age);
 }

이진우/spring_data_jpa_jinu/data-jpa/src/test/java/study/datajpa/repository/MemberJpaRepositoryTest.java

@@ -53,12 +53,29 @@ public void basicCRUD() {
 
         long count = memberJpaRepository.count();
         Assertions.assertThat(count).isEqualTo(2);
-       
+
         memberJpaRepository.delete(member1);
         memberJpaRepository.delete(member2);
         long deletedCount = memberJpaRepository.count();
         Assertions.assertThat(deletedCount).isEqualTo(0);
     }
 
 
+    @Test
+    public void findByUsernameAndAgeGreaterThan(){
+        Member m1= new Member("AAA",10);
+        Member m2 = new Member("AAA",20);
+        memberJpaRepository.save(m1);
+        memberJpaRepository.save(m2);
+
+        List<Member> result=
+                memberJpaRepository.findByUsernameAndAgeGreaterThan("AAA",15);
+        Assertions.assertThat(result.get(0).getUsername()).isEqualTo("AAA");
+        Assertions.assertThat(result.get(0).getAge()).isEqualTo(20);
+        Assertions.assertThat(result.size()).isEqualTo(1);
+
+
+    }
+
+
 }

이진우/spring_data_jpa_jinu/data-jpa/src/test/java/study/datajpa/repository/MemberRepositoryTest.java

@@ -61,4 +61,20 @@ public void basicCRUD() {
     }
 
 
+    @Test
+    public void findByUsernameAndAgeGreaterThan(){
+        Member m1= new Member("AAA",10);
+        Member m2 = new Member("AAA",20);
+        memberRepository.save(m1);
+        memberRepository.save(m2);
+
+        List<Member> result= memberRepository.findByUsernameAndAgeGreaterThan("AAA",15);
+        Assertions.assertThat(result.get(0).getUsername()).isEqualTo("AAA");
+        Assertions.assertThat(result.get(0).getAge()).isEqualTo(20);
+        Assertions.assertThat(result.size()).isEqualTo(1);
+
+
+    }
+
+
 }