Bael 2826 case insensitive spring data jpa (#6668)

* BAEL-2826: Case Insensitive Comparison Spring data jpa

* BAEL-2826: Fixing imports

* BAEL-2826: Case Insensitive Comparison Spring data jpa

* BAEL-2826: Fixing imports

* BAEL-2826: Moving code to another repo

* BAEL-2826: Moving code to another repo

* BAEL-2826 : Refactor

* BAEL-2826 : Refactor

* BAEL-2826 : Override equals hashcode

persistence-modules/spring-data-jpa-2/src/main/java/com/baeldung/entity/Passenger.java

@@ -0,0 +1,78 @@
+package com.baeldung.entity;
+
+import javax.persistence.Basic;
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+import java.util.Objects;
+
+@Entity
+public class Passenger {
+
+    @Id
+    @GeneratedValue
+    @Column(nullable = false)
+    private Long id;
+
+    @Basic(optional = false)
+    @Column(nullable = false)
+    private String firstName;
+
+    @Basic(optional = false)
+    @Column(nullable = false)
+    private String lastName;
+
+    private Passenger(String firstName, String lastName) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+
+    public static Passenger from(String firstName, String lastName) {
+        return new Passenger(firstName, lastName);
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    @Override
+    public String toString() {
+        return "Passenger{" + "id=" + id + ", firstName='" + firstName + '\'' + ", lastName='" + lastName + '\'' + '}';
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o)
+            return true;
+        if (o == null || getClass() != o.getClass())
+            return false;
+        Passenger passenger = (Passenger) o;
+        return Objects.equals(firstName, passenger.firstName) && Objects.equals(lastName, passenger.lastName);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(firstName, lastName);
+    }
+}

persistence-modules/spring-data-jpa-2/src/main/java/com/baeldung/repository/PassengerRepository.java

@@ -0,0 +1,14 @@
+package com.baeldung.repository;
+
+import com.baeldung.entity.Passenger;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+interface PassengerRepository extends JpaRepository<Passenger, Long> {
+
+    List<Passenger> findByFirstNameIgnoreCase(String firstName);
+
+}

persistence-modules/spring-data-jpa-2/src/test/java/com/baeldung/repository/PassengerRepositoryIntegrationTest.java

@@ -0,0 +1,54 @@
+package com.baeldung.repository;
+
+import com.baeldung.entity.Passenger;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import javax.persistence.EntityManager;
+import javax.persistence.PersistenceContext;
+import java.util.List;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.contains;
+import static org.hamcrest.core.IsNot.not;
+
+@DataJpaTest
+@RunWith(SpringRunner.class)
+public class PassengerRepositoryIntegrationTest {
+
+    @PersistenceContext
+    private EntityManager entityManager;
+    @Autowired
+    private PassengerRepository repository;
+
+    @Before
+    public void before() {
+        entityManager.persist(Passenger.from("Jill", "Smith"));
+        entityManager.persist(Passenger.from("Eve", "Jackson"));
+        entityManager.persist(Passenger.from("Fred", "Bloggs"));
+        entityManager.persist(Passenger.from("Ricki", "Bobbie"));
+        entityManager.persist(Passenger.from("Siya", "Kolisi"));
+    }
+
+    @Test
+    public void givenPassengers_whenMatchingIgnoreCase_thenExpectedReturned() {
+        Passenger jill = Passenger.from("Jill", "Smith");
+        Passenger eve = Passenger.from("Eve", "Jackson");
+        Passenger fred = Passenger.from("Fred", "Bloggs");
+        Passenger siya = Passenger.from("Siya", "Kolisi");
+        Passenger ricki = Passenger.from("Ricki", "Bobbie");
+
+        List<Passenger> passengers = repository.findByFirstNameIgnoreCase("FRED");
+
+        assertThat(passengers, contains(fred));
+        assertThat(passengers, not(contains(eve)));
+        assertThat(passengers, not(contains(siya)));
+        assertThat(passengers, not(contains(jill)));
+        assertThat(passengers, not(contains(ricki)));
+
+    }
+}