update driver & BE

bsm-desk-app/pom.xml

@@ -14,6 +14,13 @@
 <junit.version>5.10.0</junit.version>  </properties>
 
   <dependencies>
+
+    </dependency>    <dependency>
+    </dependency>      <groupId>org.postgresql</groupId>
+    </dependency>      <artifactId>postgresql</artifactId>
+    </dependency>      <version>42.7.3</version>
+    </dependency>    </dependency>
+
     <dependency>
       <groupId>org.openjfx</groupId>
       <artifactId>javafx-controls</artifactId>

bsm-desk-app/src/main/java/main/backend/lists/AuthorList.java

@@ -0,0 +1,49 @@
+package main.backend.lists;
+
+import java.sql.ResultSet;
+import java.util.ArrayList;
+
+import main.backend.objects.Author;
+import main.backend.utils.DBconnect;
+
+public class AuthorList {
+	private ArrayList<Author> authors;
+
+	public AuthorList() { authors = new ArrayList<>(); }
+	public AuthorList(AuthorList other) { authors = new ArrayList<>(other.authors); }
+
+	public void add(Author author) { authors.add(author); }
+	public void clear() { authors.clear(); }
+	public Author getAuthorByID(int id) {
+		for (Author author : authors)
+			if (author.getId() == id) return author;
+		return null;
+	}
+
+	public boolean loadAuthors_fromDatabase(String name) {
+		String condition = name == null ? null : ("WHERE Name = " + name);
+		try (
+			DBconnect db = new DBconnect();
+			ResultSet rs = db.view("AUTHOR", condition);
+		) {
+			authors.clear();
+			while (rs.next())
+				authors.add(new Author(rs.getInt(0), rs.getString(1), rs.getString(2)));
+		} catch (Exception e) {
+			e.printStackTrace();
+			return false;
+		}
+
+		return true;
+	}
+
+	@Override
+	public String toString() {
+		String str = "There are " + authors.size() + " authors in the list.\n\n";
+
+		for (Author author : authors)
+			str += author.toString() + "\n";
+
+		return str;
+	}
+}

bsm-desk-app/src/main/java/main/backend/lists/BookList.java

@@ -0,0 +1,72 @@
+package main.backend.lists;
+
+import java.sql.ResultSet;
+import java.util.ArrayList;
+
+import main.backend.objects.Book;
+import main.backend.utils.DBconnect;
+
+public class BookList {
+	private ArrayList<Book> books;
+
+	public BookList() { books = new ArrayList<>(); }
+	public BookList(BookList other) { books = new ArrayList<>(other.books); }
+
+	public void add(Book book) { books.add(book); }
+	public void clear() { books.clear(); }
+	public Book getBookById(int id) {
+		for (Book book : books)
+			if (book.getId() == id) return book;
+		return null;
+	}
+
+	public boolean loadBooks_fromDatabase(String name, PublisherList pl, AuthorList au, CategoryList ca) {
+		String condition = name == null ? null : ("WHERE Name = " + name);
+		try (
+			DBconnect db = new DBconnect();
+			ResultSet rs = db.view("AUTHOR", condition);
+		) {
+			books.clear();
+			while (rs.next()) {
+				int id = rs.getInt(0);
+				String title = rs.getString(1);
+				String isbn = rs.getString(2);
+				String language = rs.getString(3);
+				int numberOfPages = rs.getInt(4);
+				int publisherID = rs.getInt(5);
+				int authorID = rs.getInt(6);
+				boolean enabled = rs.getBoolean(8);
+
+				CategoryList categories = new CategoryList();
+				String condition1 = "WHERE BookID = " + String.valueOf(id);
+				try (ResultSet rs1 = db.view("CATEGORY_BOOK", condition1);) {
+					while (rs1.next())
+						categories.add(ca.getCategoryByID(rs1.getInt(0)));
+				} catch (Exception e) {
+					System.err.println("Categories");
+					e.printStackTrace();
+					return false;
+				}
+
+				Book book = new Book(id, title, isbn, language, numberOfPages, pl.getPublisherByID(publisherID), au.getAuthorByID(authorID), categories, enabled);
+				books.add(book);
+			}
+		} catch (Exception e) {
+			e.printStackTrace();
+			return false;
+		}
+
+		return true;
+	}
+
+	@Override
+	public String toString() {
+		String str = "There are " + books.size() + " books in the list.\n\n";
+
+		for (Book book : books)
+			str += book.toString() + "\n";
+
+		return str;
+	}
+
+}

bsm-desk-app/src/main/java/main/backend/list/CategoryList.java → bsm-desk-app/src/main/java/main/backend/lists/CategoryList.java

@@ -1,23 +1,42 @@
-package main.backend.list;
+package main.backend.lists;
 
+import java.sql.ResultSet;
 import java.util.ArrayList;
 
 import main.backend.objects.Category;
+import main.backend.utils.DBconnect;
 
 public class CategoryList {
 	private ArrayList<Category> categories;
 
 	public CategoryList() { categories = new ArrayList<Category>(); }
 	public CategoryList(CategoryList other) { categories = new ArrayList<>(other.categories); }
 
-	public void addCategory(Category category) { categories.add(category); }
-
+	public void add(Category category) { categories.add(category); }
+	public void clear() { categories.clear(); }
 	public Category getCategoryByID(int id) {
 		for (Category category : categories)
 			if (category.getId() == id) return category;
 		return null;
 	}
 
+	public boolean loadCategories_fromDatabase(String name) {
+		String condition = name == null ? null : ("WHERE Name = " + name);
+		try (
+			DBconnect db = new DBconnect();
+			ResultSet rs = db.view("AUTHOR", condition);
+		) {
+			categories.clear();
+			while (rs.next())
+				categories.add(new Category(rs.getInt(0), rs.getString(1), rs.getString(2)));
+		} catch (Exception e) {
+			e.printStackTrace();
+			return false;
+		}
+
+		return true;
+	}
+
 	@Override
 	public String toString() {
 		String str = "There are " + categories.size() + " publishers in the list.\n\n";

bsm-desk-app/src/main/java/main/backend/list/PublisherList.java → bsm-desk-app/src/main/java/main/backend/lists/PublisherList.java

@@ -1,23 +1,42 @@
-package main.backend.list;
+package main.backend.lists;
 
+import java.sql.ResultSet;
 import java.util.ArrayList;
 
 import main.backend.objects.Publisher;
+import main.backend.utils.DBconnect;
 
 public class PublisherList {
 	private ArrayList<Publisher> publishers;
 
 	public PublisherList() { publishers = new ArrayList<>(); }
 	public PublisherList(PublisherList other) { publishers = new ArrayList<>(other.publishers); }
 
-	public void addPublisher(Publisher publisher) { publishers.add(publisher); }
-
+	public void add(Publisher publisher) { publishers.add(publisher); }
+	public void clear() { publishers.clear(); }
 	public Publisher getPublisherByID(int id) {
 		for (Publisher publisher : publishers)
 			if (publisher.getId() == id) return publisher;
 		return null;
 	}
 
+	public boolean loadPublishers_fromDatabase(String name) {
+		String condition = name == null ? null : ("WHERE Name = " + name);
+		try (
+			DBconnect db = new DBconnect();
+			ResultSet rs = db.view("AUTHOR", condition);
+		) {
+			publishers.clear();
+			while (rs.next())
+				publishers.add(new Publisher(rs.getInt(0), rs.getString(1), rs.getString(2)));
+		} catch (Exception e) {
+			e.printStackTrace();
+			return false;
+		}
+
+		return true;
+	}
+
 	@Override
 	public String toString() {
 		String str = "There are " + publishers.size() + " publishers in the list.\n\n";

bsm-desk-app/src/main/java/main/backend/objects/Author.java

@@ -1,10 +1,15 @@
 package main.backend.objects;
 
+import java.sql.SQLException;
+
+import main.backend.utils.DBconnect;
+
 public class Author {
 	private int id;
 	private String name, description;
 	private boolean enabled;
-
+
+	public Author() {}
 	public Author(int id, String name, String description, boolean enabled) {
 		this.id = id;
 		this.name = name;
@@ -26,6 +31,21 @@ public void changeInfo(int id, String name, String description, boolean enabled)
 		this.enabled = enabled;
 	}
 
+	public boolean addAuthor_toDatabase() {
+		boolean rs;
+		try (DBconnect db = new DBconnect();) {
+			rs = db.add("AUTHOR", "");
+		} catch (SQLException e) {
+			e.printStackTrace();
+			return false;
+		}
+		return rs;
+	}
+	public boolean updateAuthor_toDatabase() {
+
+		return true;
+	}
+
 	@Override
 	public String toString() {
 		String idStr = "\tID: " + String.valueOf(id) + "\n";