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他に頼って存在、または生活すること。
デジタル大辞泉
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$msg = "hello";
var_dump($msg);
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class Foo {
public function greet() {
echo "hello";
}
}
$foo = new Foo();
$foo->greet();
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
$bar = new Bar("nrs");
$foo = new Foo($bar);
$foo->greet();
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
$bar = new Bar("nrs");
$foo = new Foo($bar);
$foo->greet();
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
$bar = new Bar("nrs");
$foo = new Foo($bar);
$foo->greet();
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
$bar = new Bar("nrs");
$foo = new Foo($bar);
$foo->greet();
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
$bar = new Bar("nrs");
$foo = new Foo($bar);
$foo->greet();
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
$bar = new Bar("nrs");
$foo = new Foo($bar);
$foo->greet();
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
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class Foo {
private readonly Bar $bar;
public function __construct(Bar $bar) {
$this->bar = $bar;
}
public function greet() {
echo "hello " . $this->bar->getName();
}
}
class Bar {
private readonly string $name;
public function __construct(string $name) {
$this->name = $name;
}
public function getName(): string
{
return $this->name;
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
/**
* @param UserCreateRequest $request
* @return UserCreateResponse
*/
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
return new UserCreateResponse($userId->getValue());
}
}
use Illuminate¥Support¥Facades¥DB;
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class QueryBuilderUserRepository
{
public function save(User $user)
{
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(QueryBuilderUserRepository $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(QueryBuilderUserRepository $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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interface UserRepositoryInterface
{
public function save(User $user);
}
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class QueryBuilderUserRepository
{
public function save(User $user)
{
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
}
}
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class QueryBuilderUserRepository implements UserRepositoryInterface
{
public function save(User $user)
{
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(QueryBuilderUserRepository $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(QueryBuilderUserRepository $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(UserRepositoryInterface $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(UserRepositoryInterface $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(QueryBuilderUserRepository $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(QueryBuilderUserRepository $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(QueryBuilderUserRepository $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request): UserCreateResponse
{
$userId = new UserId(uniqid());
$user = new User($userId, $request->getName());
$this->userRepository->save($user);
return new UserCreateResponse($userId->getValue());
}
}
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class QueryBuilderUserRepository implements UserRepositoryInterface
{
public function save(User $user)
{
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
}
}
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class QueryBuilderUserRepository implements UserRepositoryInterface
{
public function save(User $user)
{
DB::table('users')
->updateOrInsert(
['id' => $user->getId()],
['name' => $user->getName()]
);
}
}
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$repository = new QueryBuilderUserRepository();
$interactor = new UserCreateInteractor($repository);
$interactor->handle(new UserCreateRequest("nrs"));
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$repository = new QueryBuilderUserRepository();
$interactor = new UserCreateInteractor($repository);
$interactor->handle(new UserCreateRequest("nrs"));
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$repository = new AwesomeUserRepository();
$interactor = new UserCreateInteractor($repository);
$interactor->handle(new UserCreateRequest("nrs"));
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$repository = new AwesomeUserRepository();
$interactor = new UserCreateInteractor($repository);
$interactor->handle(new UserCreateRequest("nrs"));
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$repository = new AwesomeUserRepository();
$interactor = new UserCreateInteractor($repository);
$interactor->handle(new UserCreateRequest("nrs"));
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$this->app->bind(
UserRepositoryInterface::class,
QueryBuilderUserRepository::class
);
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(UserRepositoryInterface $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request)
{
$userId = new UserId(uniqid());
$createdUser = new User($userId, $request->getName());
$this->userRepository->save($createdUser);
return new UserCreateResponse($userId->getValue());
}
}
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class UserCreateInteractor implements UserCreateUseCaseInterface
{
private $userRepository;
public function __construct(UserRepositoryInterface $userRepository)
{
$this->userRepository = $userRepository;
}
public function handle(UserCreateRequest $request)
{
$userId = new UserId(uniqid());
$createdUser = new User($userId, $request->getName());
$this->userRepository->save($createdUser);
return new UserCreateResponse($userId->getValue());
}
}
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class UserController extends BaseController
{
public function create(UserCreateUseCaseInterface $interactor, Request $request)
{
$name = $request->input('name');
$request = new UserCreateRequest($name);
$response = $interactor->handle($request);
$viewModel = new UserCreateViewModel($response->getCreatedUserId(), $name);
return view('user.create', compact('viewModel'));
}
}
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class UserController extends BaseController
{
public function create(UserCreateUseCaseInterface $interactor, Request $request)
{
$name = $request->input('name');
$request = new UserCreateRequest($name);
$response = $interactor->handle($request);
$viewModel = new UserCreateViewModel($response->getCreatedUserId(), $name);
return view('user.create', compact('viewModel'));
}
}
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@Saga
class SecureStockIssueSaga {
@Transient
@Autowired
private lateinit var commandGateway: CommandGateway
private lateinit var sagaState: SecureStockIssuerSagaState
@StartSaga
@SagaEventHandler(associationProperty = "secureStockId")
fun on(event: SecureStockEvents.SecureStockIssued, @MessageIdentifier messageIdentifier: String) {
sagaState = SecureStockIssuerSagaState(event.secureStockId, secureItemIdToNr = event.itemIdToNr)
log("[START SAGA] Handling the Secure Stock Issued Event within the Saga ($sagaState).")
sagaState.secureItemIdToNr.keys.forEach {
SagaLifecycle.associateWith("itemId", it.asString())
}
val commands = event.itemIdToNr.map { (itemId, nr) ->
ItemAggregateProtocol.SecureItem(itemId, event.secureStockId, nr, messageIdentifier)
}
val replies = commands.map { commandGateway.sendAndWait(it) }
if (replies.any { it is ItemAggregateProtocol.SecureItemFailed }) {
val secureSucceededList = replies.filterIsInstance()
compensateSecureStockIssued(secureSucceededList)
}
}
}
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@Saga
class SecureStockIssueSaga {
@Transient
@Autowired
private lateinit var commandGateway: CommandGateway
private lateinit var sagaState: SecureStockIssuerSagaState
@StartSaga
@SagaEventHandler(associationProperty = "secureStockId")
fun on(event: SecureStockEvents.SecureStockIssued, @MessageIdentifier messageIdentifier: String) {
sagaState = SecureStockIssuerSagaState(event.secureStockId, secureItemIdToNr = event.itemIdToNr)
log("[START SAGA] Handling the Secure Stock Issued Event within the Saga ($sagaState).")
sagaState.secureItemIdToNr.keys.forEach {
SagaLifecycle.associateWith("itemId", it.asString())
}
val commands = event.itemIdToNr.map { (itemId, nr) ->
ItemAggregateProtocol.SecureItem(itemId, event.secureStockId, nr, messageIdentifier)
}
val replies = commands.map { commandGateway.sendAndWait(it) }
if (replies.any { it is ItemAggregateProtocol.SecureItemFailed }) {
val secureSucceededList = replies.filterIsInstance()
compensateSecureStockIssued(secureSucceededList)
}
}
}
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伝統的なソフトウェア開発手法では高レベルなモジュールが低レベルな
モジュールに依存する形で作成される傾向がありました。言い換えるな
ら抽象が詳細に依存するような形で構築されていました。
抽象が詳細に依存するようになると、低レベルのモジュールにおける方
針の変更が高レベルのモジュールに波及します。これはおかしな話です。
重要なドメインのルールが含まれるのはいつだって高レベルなモジュー
ルです。低レベルなモジュールの変更を理由にして、重要な高レベルの
モジュールを変更する
（たとえばデータストアの変更を理由にビジネスロジックを変更する）な
どということは起きてほしくない事態です。
主体となるべきは高レベルなモジュール、すなわち抽象です。低レベル
なモジュールが主体となるべきではありません。
高レベルなモジュールは低レベルのモジュールを利用するクライアント
です。クライアントがすべきはどのような処理を呼び出すかの宣言です。
先述したとおり、インターフェースはそれを利用するクライアントが宣言す
るものであり、主導権はそのクライアントにあります。インターフェースを宣
言し、低レベルのモジュールはそのインターフェースに合わせて実装を行
うことで、より重要な高次元の概念に主導権を握らせることが可能にな
るのです。
『ドメイン駆動設計入門 ボトムアップでわかる！ドメイン駆動設計の基本（翔泳社）』 7.3.2
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OO
Robert C. Martin
『CleanArchitecture ( )』
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OO
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『CleanArchitecture ( )』
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