Add the repository for Deparment.

2023-10-22 20:42:42 +03:00
parent e528454576
commit fead10291c
3 changed files with 279 additions and 1 deletions
@@ -0,0 +1,134 @@
+package space.kklochko.jdbc_hospital_example.db.repositories;
+
+import space.kklochko.jdbc_hospital_example.db.factories.DataBaseConnection;
+import space.kklochko.jdbc_hospital_example.db.repositories.blocks.TransactionalInsert;
+import space.kklochko.jdbc_hospital_example.db.repositories.blocks.TransactionalUpdate;
+import space.kklochko.jdbc_hospital_example.db.repositories.blocks.CreateTable;
+import space.kklochko.jdbc_hospital_example.models.Department;
+
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.UUID;
+
+public class DepartmentRepository extends AbstractRepository<Department> {
+    private final String createTableStatement = "create table if not exists departments ("
+            + "id uuid default uuid_generate_v1(),"
+            + "name varchar(100) not null,"
+            + "location varchar(100) not null,"
+            + "phone varchar(25) not null)";
+
+    public DepartmentRepository(DataBaseConnection db){
+        super(db);
+    }
+
+    public boolean createTable() {
+        CreateTable createTable = new CreateTable();
+        return createTable.create(db, createTableStatement);
+    }
+
+    public boolean create(Department object) {
+        try (Connection connection = db.connect()) {
+            connection.setAutoCommit(false);
+
+            String sql = "insert into departments (name, location, phone) values (?, ?, ?) returning id;";
+            PreparedStatement preparedStatement = connection.prepareStatement(sql);
+
+            preparedStatement.setString(1, object.getName());
+            preparedStatement.setString(2, object.getLocation());
+            preparedStatement.setString(3, object.getPhone());
+
+            ResultSet resultSet = (new TransactionalInsert()).run(connection, preparedStatement);
+
+            if (resultSet.next()) {
+                UUID uuid = (UUID) resultSet.getObject("id");
+                object.setId(uuid);
+                return true;
+            }
+
+            return false;
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public Department read(UUID id) {
+        try (Connection connection = db.connect()) {
+            String sql = "select id, name, location, phone from departments where id = ?;";
+            PreparedStatement preparedStatement = connection.prepareStatement(sql);
+            preparedStatement.setObject(1, id);
+            ResultSet resultSet = preparedStatement.executeQuery();
+
+            if (resultSet.next()) {
+                UUID uuid = (UUID) resultSet.getObject("id");
+                String name = resultSet.getString("name");
+                String location = resultSet.getString("location");
+                String phone =  resultSet.getString("phone");
+
+                return new Department(uuid, name, location, phone);
+            }
+
+            return null;
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public ArrayList<Department> readAll() {
+        try (Connection connection = db.connect()) {
+            String sql = "select id, name, location, phone from departments;";
+            Statement statement = connection.createStatement();
+            ResultSet resultSet = statement.executeQuery(sql);
+
+            ArrayList<Department> patients = new ArrayList<>();
+
+            while (resultSet.next()) {
+                UUID uuid = (UUID) resultSet.getObject("id");
+                String name = resultSet.getString("name");
+                String location = resultSet.getString("location");
+                String phone =  resultSet.getString("phone");
+
+                patients.add(new Department(uuid, name, location, phone));
+            }
+
+            return patients;
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public boolean update(Department object) {
+        try (Connection connection = db.connect()) {
+            connection.setAutoCommit(false);
+
+            String sql = "update departments set name = ?, location = ?, phone = ? where id = ?;";
+            PreparedStatement preparedStatement = connection.prepareStatement(sql);
+
+            preparedStatement.setString(1, object.getName());
+            preparedStatement.setString(2, object.getLocation());
+            preparedStatement.setString(3, object.getPhone());
+            preparedStatement.setObject(4, object.getId());
+
+            int rowCount = (new TransactionalUpdate()).run(connection, preparedStatement);
+
+            return rowCount > 0;
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public boolean delete(UUID id) {
+        try (Connection connection = db.connect()) {
+            connection.setAutoCommit(false);
+
+            String sql = "delete from departments where id = ?;";
+            PreparedStatement preparedStatement = connection.prepareStatement(sql);
+            preparedStatement.setObject(1, id);
+
+            int rowCount = (new TransactionalUpdate()).run(connection, preparedStatement);
+
+            return rowCount > 0;
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}