[BAEL-2538] Added tutorial queries and tests

persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepository.java

@@ -10,6 +10,7 @@ import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.data.repository.query.Param;
 
+import java.time.LocalDate;
 import java.util.Collection;
 import java.util.List;
 import java.util.stream.Stream;
@@ -18,6 +19,9 @@ public interface UserRepository extends JpaRepository<User, Integer> , UserRepos
 
     Stream<User> findAllByName(String name);
 
+    @Query("select u from User u where u.email like '%@gmail.com'")
+    List<User> findUsersWithGmailAddress();
+
     @Query("SELECT u FROM User u WHERE u.status = 1")
     Collection<User> findAllActiveUsers();
 
@@ -67,4 +71,19 @@ public interface UserRepository extends JpaRepository<User, Integer> , UserRepos
     @Modifying
     @Query(value = "UPDATE USERS.Users u SET u.status = ? WHERE u.name = ?", nativeQuery = true)
     int updateUserSetStatusForNameNative(Integer status, String name);
+
+    void deleteAllByCreationDateAfter(LocalDate date);
+
+    @Modifying(clearAutomatically = true, flushAutomatically = true)
+    @Query("update User u set u.active = false where u.lastLoginDate < :date")
+    void deactivateUsersNotLoggedInSince(@Param("date") LocalDate date);
+
+    @Modifying(clearAutomatically = true, flushAutomatically = true)
+    @Query("delete User u where u.active = false")
+    void deleteDeactivatedUsers();
+
+    @Modifying(clearAutomatically = true, flushAutomatically = true)
+    @Query(value = "alter table USERS.USERS add column deleted int(1) not null default 0", nativeQuery = true)
+    void addDeletedColumn();
+
 }

persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepositoryCustom.java

@@ -1,10 +1,14 @@
 package com.baeldung.dao.repositories.user;
 
+import java.util.Collection;
 import java.util.List;
 import java.util.Set;
+import java.util.function.Predicate;
 
 import com.baeldung.domain.user.User;
 
 public interface UserRepositoryCustom {
     List<User> findUserByEmails(Set<String> emails);
+
+    List<User> findAllUsersByPredicates(Collection<Predicate<User>> predicates);
 }

persistence-modules/spring-data-jpa/src/main/java/com/baeldung/dao/repositories/user/UserRepositoryCustomImpl.java

@@ -1,8 +1,11 @@
 package com.baeldung.dao.repositories.user;
 
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.List;
 import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
 
 import javax.persistence.EntityManager;
 import javax.persistence.PersistenceContext;
@@ -40,4 +43,15 @@ public class UserRepositoryCustomImpl implements UserRepositoryCustom {
             .getResultList();
     }
 
+    @Override
+    public List<User> findAllUsersByPredicates(Collection<java.util.function.Predicate<User>> predicates) {
+        List<User> allUsers = entityManager.createQuery("select u from User u", User.class).getResultList();
+        Stream<User> allUsersStream = allUsers.stream();
+        for (java.util.function.Predicate<User> predicate : predicates) {
+            allUsersStream = allUsersStream.filter(predicate);
+        }
+
+        return allUsersStream.collect(Collectors.toList());
+    }
+
 }

persistence-modules/spring-data-jpa/src/main/java/com/baeldung/domain/user/User.java

@@ -1,7 +1,9 @@
 package com.baeldung.domain.user;
 
 import javax.persistence.*;
+import java.time.LocalDate;
 import java.util.List;
+import java.util.Objects;
 
 @Entity
 @Table(name = "users", schema = "users")
@@ -11,6 +13,9 @@ public class User {
     @GeneratedValue(strategy = GenerationType.IDENTITY)
     private int id;
     private String name;
+    private LocalDate creationDate;
+    private LocalDate lastLoginDate;
+    private boolean active;
     private int age;
     @Column(unique = true, nullable = false)
     private String email;
@@ -22,10 +27,12 @@ public class User {
         super();
     }
 
-    public User(String name, String email, Integer status) {
+    public User(String name, LocalDate creationDate, String email, Integer status) {
         this.name = name;
+        this.creationDate = creationDate;
         this.email = email;
         this.status = status;
+        this.active = true;
     }
 
     public int getId() {
@@ -44,6 +51,10 @@ public class User {
         this.name = name;
     }
 
+    public LocalDate getCreationDate() {
+        return creationDate;
+    }
+
     public String getEmail() {
         return email;
     }
@@ -83,4 +94,37 @@ public class User {
         return builder.toString();
     }
 
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        User user = (User) o;
+        return id == user.id &&
+          age == user.age &&
+          Objects.equals(name, user.name) &&
+          Objects.equals(creationDate, user.creationDate) &&
+          Objects.equals(email, user.email) &&
+          Objects.equals(status, user.status);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id, name, creationDate, age, email, status);
+    }
+
+    public LocalDate getLastLoginDate() {
+        return lastLoginDate;
+    }
+
+    public void setLastLoginDate(LocalDate lastLoginDate) {
+        this.lastLoginDate = lastLoginDate;
+    }
+
+    public boolean isActive() {
+        return active;
+    }
+
+    public void setActive(boolean active) {
+        this.active = active;
+    }
 }