#8: Setup Model and DAO
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4 changed files with 126 additions and 2 deletions
34
src/main/java/de/hitec/nhplus/login/User.java
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34
src/main/java/de/hitec/nhplus/login/User.java
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package de.hitec.nhplus.login;
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import de.hitec.nhplus.nurse.Nurse;
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public class User {
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private int id;
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private String username;
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private int permissions = 0;
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private Nurse nurse;
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public User(
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int id,
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String username,
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int permissions,
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Nurse nurse
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) {
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this.id = id;
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this.username = username;
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this.permissions = permissions;
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this.nurse = nurse;
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}
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public User(
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String username,
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int permissions,
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Nurse nurse,
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boolean admin
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) {
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this.username = username;
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this.permissions = permissions;
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this.nurse = nurse;
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}
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}
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90
src/main/java/de/hitec/nhplus/login/database/UserDao.java
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90
src/main/java/de/hitec/nhplus/login/database/UserDao.java
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package de.hitec.nhplus.login.database;
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import de.hitec.nhplus.datastorage.Dao;
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import de.hitec.nhplus.datastorage.DaoFactory;
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import de.hitec.nhplus.login.User;
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import de.hitec.nhplus.nurse.Nurse;
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import java.sql.Connection;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.List;
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public class UserDao implements Dao<User> {
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protected final Connection connection;
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public UserDao(Connection connection) {
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this.connection = connection;
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}
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public int readUserId(String username) throws SQLException {
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final String SQL = "SELECT id FROM user WHERE username = ?";
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PreparedStatement statement = this.connection.prepareStatement(SQL);
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statement.setString(1, username);
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return statement.executeQuery().getInt(1);
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}
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public byte[] readPasswordSalt(int id) throws SQLException {
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final String SQL = "SELECT passwordSalt FROM user WHERE id = ?";
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PreparedStatement statement = this.connection.prepareStatement(SQL);
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statement.setInt(1, id);
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return statement.executeQuery().getBytes(1);
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}
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public byte[] readPasswordHash(int id) throws SQLException {
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final String SQL = "SELECT passwordHash FROM user WHERE id = ?";
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PreparedStatement statement = this.connection.prepareStatement(SQL);
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statement.setInt(1, id);
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return statement.executeQuery().getBytes(1);
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}
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// User
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@Override
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public User read(int id) throws SQLException {
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final String SQL = """
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SELECT user.username, user__permissions.permissions, user__nurse.nurseId
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FROM user
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LEFT JOIN user__permissions ON user.id = user__permissions.userId
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LEFT JOIN user__nurse ON user.id = user__nurse.userId
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WHERE user.id = ?;
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""";
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PreparedStatement statement = this.connection.prepareStatement(SQL);
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statement.setInt(1, id);
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ResultSet result = statement.executeQuery();
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int nurseId = result.getInt(3);
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Nurse nurse = null;
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if (!result.wasNull()) {
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nurse = DaoFactory.getInstance().createNurseDAO().read(nurseId);
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}
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return new User(
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id,
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result.getString(1),
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result.getInt(2),
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nurse
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);
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}
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// Administration
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@Override
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public void create(User user) throws SQLException {
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}
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@Override
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public void update(User user) throws SQLException {
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}
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@Override
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public void delete(int id) throws SQLException {
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}
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@Override
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public List<User> readAll() throws SQLException {
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return null;
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}
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}
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@ -1,7 +1,7 @@
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CREATE TABLE user
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(
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id INTEGER PRIMARY KEY AUTOINCREMENT,
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username TEXT NOT NULL,
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username TEXT NOT NULL UNIQUE,
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passwordSalt BLOB NOT NULL,
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passwordHash BLOB NOT NULL
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)
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@ -1,6 +1,6 @@
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CREATE TABLE user__permissions
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(
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userId INTEGER NOT NULL,
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permissions INTEGER, -- Binary Bitmask for Permissions
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permissions INTEGER NOT NULL, -- Binary Bitmask for Permissions
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FOREIGN KEY (userId) REFERENCES user (id) ON DELETE CASCADE
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)
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