connected to DB, implemented DAO #370
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Elena-Bruyako
suggested changes
Jun 25, 2024
src/main/java/mate/academy/Main.java
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| book.setTitle("GCSE Computer Science OCR Complete Revision"); | ||
| book.setPrice(BigDecimal.valueOf(400)); | ||
| bookDao.create(book); | ||
| System.out.println(bookDao.findById(6L)); |
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You don't have book with id 6 becuase you have only one book
src/main/java/mate/academy/Main.java
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| book.setPrice(BigDecimal.valueOf(400)); | ||
| bookDao.create(book); | ||
| System.out.println(bookDao.findById(6L)); | ||
| System.out.println(bookDao.deleteById(6L)); |
src/main/java/mate/academy/Main.java
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| public static void main(String[] args) { | ||
| BookDao bookDao = (BookDao) injector.getInstance(BookDao.class); | ||
| Book book = new Book(); |
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Create several books (List) and implement daoImpl methods
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| @Dao | ||
| public class BookDaoImpl implements BookDao { | ||
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| statement.setLong(1, id); | ||
| ResultSet resultSet = statement.executeQuery(); | ||
| if (resultSet.next()) { | ||
| String title = resultSet.getString("title"); |
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Create separate method for mapping resultSet to Book
| @@ -0,0 +1,131 @@ | |||
| package mate.academy.lib; | |||
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Suggested change
| package mate.academy.lib; | |
| package mate.academy.dao; |
| @@ -0,0 +1,28 @@ | |||
| package mate.academy.lib; | |||
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Suggested change
| package mate.academy.lib; | |
| package mate.academy.util; |
| @@ -0,0 +1,7 @@ | |||
| package mate.academy.lib; | |||
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Suggested change
| package mate.academy.lib; | |
| package mate.academy.exception; |
src/main/resources/init_db.sql
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| @@ -0,0 +1,22 @@ | |||
| CREATE TABLE `books` ( | |||
| `id` INT NOT NULL AUTO_INCREMENT, | |||
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Suggested change
| `id` INT NOT NULL AUTO_INCREMENT, | |
| `id` BIGINT AUTO_INCREMENT, |
src/main/resources/init_db.sql
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| CREATE TABLE `books` ( | ||
| `id` INT NOT NULL AUTO_INCREMENT, | ||
| `title` VARCHAR(255), | ||
| `price` INT, |
MentorMateAcademy
suggested changes
Jun 25, 2024
Comment on lines
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| try (Connection connection = ConnectionUtil.getConnection(); | ||
| PreparedStatement statement = | ||
| connection.prepareStatement(sql, Statement.RETURN_GENERATED_KEYS)) { |
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try with resources use for read ioperations
| DB_PROPERTIES.put("password", "1987"); | ||
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| try { | ||
| Class.forName("com.mysql.cj.jdbc.Driver"); |
src/main/resources/init_db.sql
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| CREATE TABLE `books` ( | ||
| `id` INT NOT NULL AUTO_INCREMENT, | ||
| `title` VARCHAR(255), | ||
| `price` INT, |
Vasul-Pankiv
approved these changes
Jun 25, 2024
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