gaspersic/java-design-patterns
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Hexagonal pattern: move business logic to core

Browse Source
This commit is contained in:
Ilkka Seppälä
2016-09-03 22:02:08 +03:00
parent e57a0948ef
commit ab68129829
7 changed files with 202 additions and 101 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
hexagonal/src/main/java/com/iluwatar/hexagonal/administration/LotteryAdministration.java
View File

@ -22,12 +22,12 @@
*/
package com.iluwatar.hexagonal.administration;
import java.util.Map;
import com.iluwatar.hexagonal.domain.LotteryNumbers;
import com.iluwatar.hexagonal.domain.LotteryTicket;
import com.iluwatar.hexagonal.domain.LotteryTicketId;
import java.util.Map;
/**
*
* Administrator interface for lottery service.

47
hexagonal/src/main/java/com/iluwatar/hexagonal/administration/LotteryAdministrationImpl.java
View File

@ -22,22 +22,13 @@
*/
package com.iluwatar.hexagonal.administration;
import java.util.Map;
import com.iluwatar.hexagonal.banking.WireTransfers;
import com.iluwatar.hexagonal.banking.WireTransfersImpl;
import com.iluwatar.hexagonal.database.LotteryTicketRepository;
import com.iluwatar.hexagonal.database.LotteryTicketInMemoryRepository;
import com.iluwatar.hexagonal.domain.LotteryConstants;
import com.iluwatar.hexagonal.domain.LotteryNumbers;
import com.iluwatar.hexagonal.domain.LotterySystem;
import com.iluwatar.hexagonal.domain.LotterySystemImpl;
import com.iluwatar.hexagonal.domain.LotteryTicket;
import com.iluwatar.hexagonal.domain.LotteryTicketCheckResult;
import com.iluwatar.hexagonal.domain.LotteryTicketCheckResult.CheckResult;
import com.iluwatar.hexagonal.domain.LotteryTicketId;
import com.iluwatar.hexagonal.notifications.LotteryNotifications;
import com.iluwatar.hexagonal.notifications.LotteryNotificationsImpl;
import com.iluwatar.hexagonal.service.LotteryService;
import com.iluwatar.hexagonal.service.LotteryServiceImpl;
import java.util.Map;
/**
*
@ -46,42 +37,24 @@ import com.iluwatar.hexagonal.service.LotteryServiceImpl;
*/
public class LotteryAdministrationImpl implements LotteryAdministration {
private final LotteryTicketRepository repository;
private final LotteryService service = new LotteryServiceImpl();
private final LotteryNotifications notifications = new LotteryNotificationsImpl();
private final WireTransfers bank = new WireTransfersImpl();
private final LotterySystem lotterySystem;
public LotteryAdministrationImpl() {
repository = new LotteryTicketInMemoryRepository();
lotterySystem = new LotterySystemImpl();
}
@Override
public Map<LotteryTicketId, LotteryTicket> getAllSubmittedTickets() {
return repository.findAll();
return lotterySystem.getAllSubmittedTickets();
}
@Override
public LotteryNumbers performLottery() {
LotteryNumbers numbers = LotteryNumbers.createRandom();
Map<LotteryTicketId, LotteryTicket> tickets = getAllSubmittedTickets();
for (LotteryTicketId id: tickets.keySet()) {
LotteryTicketCheckResult result = service.checkTicketForPrize(id, numbers);
if (result.getResult().equals(CheckResult.WIN_PRIZE)) {
boolean transferred = bank.transferFunds(LotteryConstants.PRIZE_AMOUNT, LotteryConstants.SERVICE_BANK_ACCOUNT,
tickets.get(id).getPlayerDetails().getBankAccount());
if (transferred) {
notifications.notifyPrize(tickets.get(id).getPlayerDetails(), LotteryConstants.PRIZE_AMOUNT);
} else {
notifications.notifyPrizeError(tickets.get(id).getPlayerDetails(), LotteryConstants.PRIZE_AMOUNT);
}
} else if (result.getResult().equals(CheckResult.NO_PRIZE)) {
notifications.notifyNoWin(tickets.get(id).getPlayerDetails());
}
}
return numbers;
return lotterySystem.performLottery();
}
@Override
public void resetLottery() {
repository.deleteAll();
lotterySystem.resetLottery();
}
}

58
hexagonal/src/main/java/com/iluwatar/hexagonal/domain/LotterySystem.java Normal file
View File

@ -0,0 +1,58 @@
/**
* The MIT License
* Copyright (c) 2014 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.hexagonal.domain;
import java.util.Map;
import java.util.Optional;
/**
* Lottery system interface
*/
public interface LotterySystem {
/**
* Get all the lottery tickets submitted for lottery
*/
Map<LotteryTicketId, LotteryTicket> getAllSubmittedTickets();
/**
* Draw lottery numbers
*/
LotteryNumbers performLottery();
/**
* Begin new lottery round
*/
void resetLottery();
/**
* Submit lottery ticket to participate in the lottery
*/
Optional<LotteryTicketId> submitTicket(LotteryTicket ticket);
/**
* Check if lottery ticket has won
*/
LotteryTicketCheckResult checkTicketForPrize(LotteryTicketId id, LotteryNumbers winningNumbers);
}

107
hexagonal/src/main/java/com/iluwatar/hexagonal/domain/LotterySystemImpl.java Normal file
View File

@ -0,0 +1,107 @@
/**
* The MIT License
* Copyright (c) 2014 Ilkka Seppälä
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package com.iluwatar.hexagonal.domain;
import com.iluwatar.hexagonal.banking.WireTransfers;
import com.iluwatar.hexagonal.banking.WireTransfersImpl;
import com.iluwatar.hexagonal.database.LotteryTicketInMemoryRepository;
import com.iluwatar.hexagonal.database.LotteryTicketRepository;
import com.iluwatar.hexagonal.notifications.LotteryNotifications;
import com.iluwatar.hexagonal.notifications.LotteryNotificationsImpl;
import java.util.Map;
import java.util.Optional;
/**
* Lottery system implementation
*/
public class LotterySystemImpl implements LotterySystem {
private final LotteryTicketRepository repository;
private final LotteryNotifications notifications = new LotteryNotificationsImpl();
private final WireTransfers bank = new WireTransfersImpl();
public LotterySystemImpl() {
repository = new LotteryTicketInMemoryRepository();
}
@Override
public Map<LotteryTicketId, LotteryTicket> getAllSubmittedTickets() {
return repository.findAll();
}
@Override
public LotteryNumbers performLottery() {
LotteryNumbers numbers = LotteryNumbers.createRandom();
Map<LotteryTicketId, LotteryTicket> tickets = getAllSubmittedTickets();
for (LotteryTicketId id : tickets.keySet()) {
LotteryTicketCheckResult result = checkTicketForPrize(id, numbers);
if (result.getResult().equals(LotteryTicketCheckResult.CheckResult.WIN_PRIZE)) {
boolean transferred = bank.transferFunds(LotteryConstants.PRIZE_AMOUNT, LotteryConstants.SERVICE_BANK_ACCOUNT,
tickets.get(id).getPlayerDetails().getBankAccount());
if (transferred) {
notifications.notifyPrize(tickets.get(id).getPlayerDetails(), LotteryConstants.PRIZE_AMOUNT);
} else {
notifications.notifyPrizeError(tickets.get(id).getPlayerDetails(), LotteryConstants.PRIZE_AMOUNT);
}
} else if (result.getResult().equals(LotteryTicketCheckResult.CheckResult.NO_PRIZE)) {
notifications.notifyNoWin(tickets.get(id).getPlayerDetails());
}
}
return numbers;
}
@Override
public void resetLottery() {
repository.deleteAll();
}
@Override
public Optional<LotteryTicketId> submitTicket(LotteryTicket ticket) {
boolean result = bank.transferFunds(LotteryConstants.TICKET_PRIZE, ticket.getPlayerDetails().getBankAccount(),
LotteryConstants.SERVICE_BANK_ACCOUNT);
if (result == false) {
notifications.notifyTicketSubmitError(ticket.getPlayerDetails());
return Optional.empty();
}
Optional<LotteryTicketId> optional = repository.save(ticket);
if (optional.isPresent()) {
notifications.notifyTicketSubmitted(ticket.getPlayerDetails());
}
return optional;
}
@Override
public LotteryTicketCheckResult checkTicketForPrize(LotteryTicketId id, LotteryNumbers winningNumbers) {
Optional<LotteryTicket> optional = repository.findById(id);
if (optional.isPresent()) {
if (optional.get().getNumbers().equals(winningNumbers)) {
return new LotteryTicketCheckResult(LotteryTicketCheckResult.CheckResult.WIN_PRIZE, 1000);
} else {
return new LotteryTicketCheckResult(LotteryTicketCheckResult.CheckResult.NO_PRIZE);
}
} else {
return new LotteryTicketCheckResult(LotteryTicketCheckResult.CheckResult.TICKET_NOT_SUBMITTED);
}
}
}

4
hexagonal/src/main/java/com/iluwatar/hexagonal/service/LotteryService.java
View File

@ -22,13 +22,13 @@
*/
package com.iluwatar.hexagonal.service;
import java.util.Optional;
import com.iluwatar.hexagonal.domain.LotteryNumbers;
import com.iluwatar.hexagonal.domain.LotteryTicket;
import com.iluwatar.hexagonal.domain.LotteryTicketCheckResult;
import com.iluwatar.hexagonal.domain.LotteryTicketId;
import java.util.Optional;
/**
*
* Interface for submitting and checking lottery tickets.

45
hexagonal/src/main/java/com/iluwatar/hexagonal/service/LotteryServiceImpl.java
View File

@ -22,20 +22,14 @@
*/
package com.iluwatar.hexagonal.service;
import java.util.Optional;
import com.iluwatar.hexagonal.banking.WireTransfers;
import com.iluwatar.hexagonal.banking.WireTransfersImpl;
import com.iluwatar.hexagonal.database.LotteryTicketRepository;
import com.iluwatar.hexagonal.database.LotteryTicketInMemoryRepository;
import com.iluwatar.hexagonal.domain.LotteryConstants;
import com.iluwatar.hexagonal.domain.LotteryNumbers;
import com.iluwatar.hexagonal.domain.LotterySystem;
import com.iluwatar.hexagonal.domain.LotterySystemImpl;
import com.iluwatar.hexagonal.domain.LotteryTicket;
import com.iluwatar.hexagonal.domain.LotteryTicketCheckResult;
import com.iluwatar.hexagonal.domain.LotteryTicketId;
import com.iluwatar.hexagonal.domain.LotteryTicketCheckResult.CheckResult;
import com.iluwatar.hexagonal.notifications.LotteryNotifications;
import com.iluwatar.hexagonal.notifications.LotteryNotificationsImpl;
import java.util.Optional;
/**
*
@ -44,45 +38,22 @@ import com.iluwatar.hexagonal.notifications.LotteryNotificationsImpl;
*/
public class LotteryServiceImpl implements LotteryService {
private final LotteryTicketRepository repository;
private final WireTransfers bank = new WireTransfersImpl();
private final LotteryNotifications notifications = new LotteryNotificationsImpl();
private final LotterySystem lotterySystem;
/**
* Constructor
*/
public LotteryServiceImpl() {
repository = new LotteryTicketInMemoryRepository();
lotterySystem = new LotterySystemImpl();
}
@Override
public Optional<LotteryTicketId> submitTicket(LotteryTicket ticket) {
boolean result = bank.transferFunds(LotteryConstants.TICKET_PRIZE, ticket.getPlayerDetails().getBankAccount(),
LotteryConstants.SERVICE_BANK_ACCOUNT);
if (result == false) {
notifications.notifyTicketSubmitError(ticket.getPlayerDetails());
return Optional.empty();
}
Optional<LotteryTicketId> optional = repository.save(ticket);
if (optional.isPresent()) {
notifications.notifyTicketSubmitted(ticket.getPlayerDetails());
}
return optional;
return lotterySystem.submitTicket(ticket);
}
@Override
public LotteryTicketCheckResult checkTicketForPrize(LotteryTicketId id, LotteryNumbers winningNumbers) {
Optional<LotteryTicket> optional = repository.findById(id);
if (optional.isPresent()) {
if (optional.get().getNumbers().equals(winningNumbers)) {
return new LotteryTicketCheckResult(CheckResult.WIN_PRIZE, 1000);
} else {
return new LotteryTicketCheckResult(CheckResult.NO_PRIZE);
}
} else {
return new LotteryTicketCheckResult(CheckResult.TICKET_NOT_SUBMITTED);
}
return lotterySystem.checkTicketForPrize(id, winningNumbers);
}
}