Feat: benjaminscott/lesson25/Introduction to Databases

lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/factory/LibraryDbDataLoader.java

@@ -2,6 +2,7 @@
 
 import com.codedifferently.lesson25.models.LibraryDataModel;
 import com.codedifferently.lesson25.repository.LibraryGuestRepository;
+import com.codedifferently.lesson25.repository.LibraryUserRepository;
 import com.codedifferently.lesson25.repository.MediaItemRepository;
 import java.io.IOException;
 import org.springframework.beans.factory.annotation.Autowired;
@@ -13,13 +14,15 @@ public final class LibraryDbDataLoader implements LibraryDataLoader {
 
   @Autowired private MediaItemRepository mediaItemsRepository;
   @Autowired private LibraryGuestRepository libraryGuestRepository;
+  @Autowired private LibraryUserRepository libraryUserRepository;
 
   @Override
   public LibraryDataModel loadData() throws IOException {
     var model = new LibraryDataModel();
 
     model.mediaItems = mediaItemsRepository.findAll();
     model.guests = libraryGuestRepository.findAll();
+    model.users = libraryUserRepository.findAll();
 
     return model;
   }

lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/models/LibraryDataModel.java

@@ -17,6 +17,7 @@ public class LibraryDataModel {
 
   public List<MediaItemModel> mediaItems;
   public List<LibraryGuestModel> guests;
+  public List<LibraryUserModel> users;
 
   public List<MediaItem> getMediaItems() {
     List<MediaItem> results = new ArrayList<>();
@@ -59,4 +60,8 @@ public Map<String, List<CheckoutModel>> getCheckoutsByEmail() {
     }
     return results;
   }
+
+  public List<LibraryUserModel> getUsers() {
+    return users;
+  }
 }

lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/models/LibraryUserModel.java

@@ -0,0 +1,15 @@
+package com.codedifferently.lesson25.models;
+
+import jakarta.persistence.Entity;
+import jakarta.persistence.Id;
+import jakarta.persistence.Table;
+
+@Entity
+@Table(name = "library_users")
+public class LibraryUserModel {
+  @Id public String id;
+  public String email;
+  public String firstName;
+  public String lastName;
+  public String password;
+}

lesson_25/db/db_app/src/main/java/com/codedifferently/lesson25/repository/LibraryUserRepository.java

@@ -0,0 +1,10 @@
+package com.codedifferently.lesson25.repository;
+
+import com.codedifferently.lesson25.models.LibraryUserModel;
+import java.util.List;
+import org.springframework.data.repository.CrudRepository;
+
+public interface LibraryUserRepository extends CrudRepository<LibraryUserModel, String> {
+  @Override
+  List<LibraryUserModel> findAll();
+}

lesson_25/db/db_app/src/main/resources/queries/benjaminscott.sql

@@ -0,0 +1,11 @@
+SELECT type, COUNT(*)
+FROM media_items
+GROUP BY type;
+
+SELECT SUM(pages)
+FROM media_items
+JOIN checked_out_items ON media_items.id = checked_out_items.itemId;
+
+SELECT guests.name, guests.email, guests.type, checked_out_items.itemId, checked_out_items.dueDate
+FROM guests
+LEFT JOIN checked_out_items ON guests.email = checked_out_items.email;