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#1321

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This commit is contained in:
Ashish Trivedi 2020-07-19 22:20:15 +05:30
parent 52e6ea2b68
commit c4b1b89f1f
4 changed files with 55 additions and 36 deletions
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32
transaction-script/src/main/java/com/ashishtrivedi16/transactionscript/Hotel.java
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@ -1,15 +1,41 @@
package com.ashishtrivedi16.transactionscript;
public class Hotel {
import com.ashishtrivedi16.transactionscript.db.HotelDAOImpl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public void bookRoom(int roomNumber) {
import java.util.Optional;
public class Hotel {
private static final Logger LOGGER = LoggerFactory.getLogger(TransactionScriptApp.class);
private HotelDAOImpl hotelDAO;
public Hotel(HotelDAOImpl hotelDAO) {
this.hotelDAO = hotelDAO;
}
public void bookRoom(int roomNumber) throws Exception {
/*
TODO
-> Check if room is available
-> Calculate price
-> Book the room
-> Commit transaction
*/
Optional<Room> room = hotelDAO.getById(roomNumber);
if (!room.isPresent()) {
LOGGER.info(roomNumber + " does not exist");
} else {
if (room.get().isBooked()) {
LOGGER.info("Room already booked!");
} else {
Room updateRoomBooking = room.get();
updateRoomBooking.setBooked(true);
hotelDAO.update(updateRoomBooking);
}
}
}
public void cancelRoomBooking(int roomNumber) {

50
transaction-script/src/main/java/com/ashishtrivedi16/transactionscript/TransactionScriptApp.java
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@ -1,15 +1,18 @@
package com.ashishtrivedi16.transactionscript;
import com.ashishtrivedi16.transactionscript.db.CustomException;
import com.ashishtrivedi16.transactionscript.db.HotelDAOImpl;
import com.ashishtrivedi16.transactionscript.db.RoomSchemaSql;
import java.sql.SQLException;
import java.util.List;
import javax.sql.DataSource;
import org.h2.jdbc.JdbcSQLException;
import org.h2.jdbcx.JdbcDataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.sql.DataSource;
import java.sql.SQLException;
import java.util.List;
public class TransactionScriptApp {
private static final String H2_DB_URL = "jdbc:h2:~/test";
@ -25,10 +28,24 @@ public class TransactionScriptApp {
final var dataSource = createDataSource();
createSchema(dataSource);
final var DAO = new HotelDAOImpl(dataSource);
addRooms(DAO);
try (var customerStream = DAO.getAll()) {
customerStream.forEach((customer) -> LOGGER.info(customer.toString()));
}
Hotel hotel = new Hotel(DAO);
hotel.bookRoom(1);
hotel.bookRoom(2);
hotel.bookRoom(3);
hotel.bookRoom(4);
hotel.bookRoom(5);
hotel.bookRoom(6);
hotel.cancelRoomBooking(3);
hotel.cancelRoomBooking(4);
deleteSchema(dataSource);
}
@ -40,10 +57,12 @@ public class TransactionScriptApp {
}
}
private static void createSchema(DataSource dataSource) throws SQLException {
private static void createSchema(DataSource dataSource) throws Exception {
try (var connection = dataSource.getConnection();
var statement = connection.createStatement()) {
statement.execute(RoomSchemaSql.CREATE_SCHEMA_SQL);
} catch (JdbcSQLException e) {
throw new CustomException(e.getMessage(), e);
}
}
@ -68,25 +87,4 @@ public class TransactionScriptApp {
final var room6 = new Room(6, "Double", 80, false);
return List.of(room1, room2, room3, room4, room5, room6);
}
private static void generate(final HotelDAOImpl hotelDAO) throws Exception {
// addRooms(hotelDAO);
// LOGGER.info(ALL_ROOMS);
// try (var customerStream = hotelDAO.getAll()) {
// customerStream.forEach((customer) -> LOGGER.info(customer.toString()));
// }
// LOGGER.info("hotelDAO.getCustomerById(2): " + hotelDAO.getById(2));
// final var customer = new Room(4, "Dan", "Danson");
// hotelDAO.add(customer);
// LOGGER.info(ALL_ROOMS + hotelDAO.getAll());
// customer.setFirstName("Daniel");
// customer.setLastName("Danielson");
// hotelDAO.update(customer);
// LOGGER.info(ALL_ROOMS);
// try (var customerStream = hotelDAO.getAll()) {
// customerStream.forEach((cust) -> LOGGER.info(cust.toString()));
// }
// hotelDAO.delete(customer);
// LOGGER.info(ALL_ROOMS + hotelDAO.getAll());
}
}

3
transaction-script/src/main/java/com/ashishtrivedi16/transactionscript/db/HotelDAO.java
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@ -2,7 +2,6 @@ package com.ashishtrivedi16.transactionscript.db;
import com.ashishtrivedi16.transactionscript.Room;
import java.sql.SQLException;
import java.util.Optional;
import java.util.stream.Stream;
@ -12,7 +11,7 @@ public interface HotelDAO {
public Optional<Room> getById(int id) throws Exception;
public Boolean add(Room room) throws SQLException, Exception;
public Boolean add(Room room) throws Exception;
public Boolean update(Room room) throws Exception;

6
transaction-script/src/main/java/com/ashishtrivedi16/transactionscript/db/HotelDAOImpl.java
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@ -1,9 +1,6 @@
package com.ashishtrivedi16.transactionscript.db;
import com.ashishtrivedi16.transactionscript.Room;
import com.ashishtrivedi16.transactionscript.TransactionScriptApp;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.sql.DataSource;
import java.sql.Connection;
@ -19,7 +16,6 @@ import java.util.stream.StreamSupport;
public class HotelDAOImpl implements HotelDAO {
private static final Logger LOGGER = LoggerFactory.getLogger(TransactionScriptApp.class);
private final DataSource dataSource;
public HotelDAOImpl(DataSource dataSource) {
@ -89,7 +85,7 @@ public class HotelDAOImpl implements HotelDAO {
}
try (var connection = getConnection();
var statement = connection.prepareStatement("INSERT INTO ROOMS VALUES (?,?,?)")) {
var statement = connection.prepareStatement("INSERT INTO ROOMS VALUES (?,?,?,?)")) {
statement.setInt(1, room.getId());
statement.setString(2, room.getRoomType());
statement.setInt(3, room.getPrice());