1. Real World
Dependency Injection
Special Edition :)

2. Real World Dependency Injection – Special Edition
Über mich
 Stephan Hochdörfer, bitExpert AG
 Department Manager Research Labs
 PHP`ler seit 1999
 S.Hochdoerfer@bitExpert.de
 @shochdoerfer

3. Real World Dependency Injection – Special Edition
Was sind Dependencies?

4. Real World Dependency Injection – Special Edition
Sind Dependencies schlecht?

5. Real World Dependency Injection – Special Edition
Sind Dependencies schlecht?
Normalerweise nicht...

6. Real World Dependency Injection – Special Edition
Sind Dependencies schlecht?
…so lange Dependencies nicht
hartcodiert sind!

7. Real World Dependency Injection – Special Edition
Starke Kopplung

8. Real World Dependency Injection – Special Edition
Keine Wiederverwendung!

9. Real World Dependency Injection – Special Edition
Keine Isolation, nicht testbar!

10. Real World Dependency Injection – Special Edition
Dependency Wahnsinn!

11. Real World Dependency Injection – Special Edition
s
„new“ is evil!

12. Real World Dependency Injection – Special Edition
„new“ is evil!
<?php
class DeletePage extends Mvc_Action_AAction {
private $pageManager;
public function __construct() {
$this->pageManager = new PageManager();
}
protected function execute(Mvc_Request $request) {
$this->pageManager->delete(
(int) $request->get('pageId')
);
}
}

13. Real World Dependency Injection – Special Edition
„new“ is evil!
<?php
class DeletePage extends Mvc_Action_AAction {
private $pageManager;
public function __construct(PageManager $pm) {
$this->pageManager = $pm;
}
protected function execute(Mvc_Request $request) {
$this->pageManager->delete(
(int) $request->get('pageId')
);
}
}

14. Real World Dependency Injection – Special Edition
"High-level modules should not
depend on low-level modules.
Both should depend on
abstractions."
Robert C. Martin

15. Real World Dependency Injection – Special Edition
Interfaces als Vertrag

16. Real World Dependency Injection – Special Edition
„new“ is evil!
<?php
class DeletePage extends Mvc_Action_AAction {
private $pageManager;
public function __construct(IPageManager $pm) {
$this->pageManager = $pm;
}
protected function execute(Mvc_Request $request) {
$this->pageManager->delete(
(int) $request->get('pageId')
);
}
}

17. Real World Dependency Injection – Special Edition
Wie verwaltet man Dependencies?

18. Real World Dependency Injection – Special Edition
Händisch? Mit der heißen Nadel gestrickt...

19. Real World Dependency Injection – Special Edition
Automatismus notwendig!
Einfacher Container vs. Fullstack
DI Framework

20. Real World Dependency Injection – Special Edition
Was ist Dependency Injection?
Consumer

21. Real World Dependency Injection – Special Edition
Was ist Dependency Injection?
Consumer Dependencies

22. Real World Dependency Injection – Special Edition
Was ist Dependency Injection?
Consumer Dependencies Container

23. Real World Dependency Injection – Special Edition
Was ist Dependency Injection?
Consumer Dependencies Container

24. Real World Dependency Injection – Special Edition
Wie Dependencies injizieren?

25. Real World Dependency Injection – Special Edition
Constructor Injection
<?php
class MySampleService implements IMySampleService {
/**
* @var ISampleDao
*/
private $sampleDao;
public function __construct(ISampleDao $sampleDao) {
$this->sampleDao = $sampleDao;
}
}

26. Real World Dependency Injection – Special Edition
Setter Injection
<?php
class MySampleService implements IMySampleService {
/**
* @var ISampleDao
*/
private $sampleDao;
public function setSampleDao(ISampleDao $sampleDao){
$this->sampleDao = $sampleDao;
}
}

27. Real World Dependency Injection – Special Edition
Interface Injection
<?php
interface IApplicationContextAware {
public function setCtx(IApplicationContext $ctx);
}

28. Real World Dependency Injection – Special Edition
Interface Injection
<?php
class MySampleService implements IMySampleService,
IApplicationContextAware {
/**
* @var IApplicationContext
*/
private $ctx;
public function setCtx(IApplicationContext $ctx) {
$this->ctx = $ctx;
}
}

29. Real World Dependency Injection – Special Edition
Wie verbinden wir nun alles?

30. Real World Dependency Injection – Special Edition
Annotations
<?php
class MySampleService implements IMySampleService {
private $sampleDao;
/**
* @Inject
*/
public function __construct(ISampleDao $sampleDao)
{
$this->sampleDao = $sampleDao;
}
}

31. Real World Dependency Injection – Special Edition
Annotations
<?php
class MySampleService implements IMySampleService {
private $sampleDao;
/**
* @Inject
* @Named('TheSampleDao')
*/
public function __construct(ISampleDao $sampleDao)
{
$this->sampleDao = $sampleDao;
}
}

32. Real World Dependency Injection – Special Edition
Externe Konfiguration - XML
<?xml version="1.0" encoding="UTF-8" ?>
<beans>
<bean id="SampleDao" class="SampleDao">
<constructor-arg value="app_sample" />
<constructor-arg value="iSampleId" />
<constructor-arg value="BoSample" />
</bean>
<bean id="SampleService" class="MySampleService">
<constructor-arg ref="SampleDao" />
</bean>
</beans>

33. Real World Dependency Injection – Special Edition
Externe Konfiguration - YAML
services:
SampleDao:
class: SampleDao
arguments: ['app_sample', 'iSampleId', 'BoSample']
SampleService:
class: SampleService
arguments: [@SampleDao]

34. Real World Dependency Injection – Special Edition
Externe Konfiguration - PHP
<?php
class BeanCache extends Beanfactory_Container_PHP {
protected function createSampleDao() {
$oBean = new SampleDao('app_sample',
'iSampleId', 'BoSample');
return $oBean;
}
protected function createMySampleService() {
$oBean = new MySampleService(
$this->getBean('SampleDao')
);
return $oBean;
}
}

35. Real World Dependency Injection – Special Edition
Beispiele gefällig?

36. Real World Dependency Injection – Special Edition
Unittesting einfach gemacht

37. Real World Dependency Injection – Special Edition
Unittesting einfach gemacht
<?php
require_once 'PHPUnit/Framework.php';
class ServiceTest extends PHPUnit_Framework_TestCase {
public function testSampleService() {
// set up dependencies
$sampleDao = $this->getMock('ISampleDao');
$service = new MySampleService($sampleDao);
// run test case
$return = $service->doWork();
// check assertions
$this->assertTrue($return);
}
}

38. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung

39. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
Page Exporter
Page Exporter

40. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
Page Exporter
Page Exporter
Released / /Published
Released Published Workingcopy
Workingcopy
Pages
Pages Pages
Pages

41. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
<?php
abstract class PageExporter {
protected function setPageDao(IPageDao $pageDao) {
$this->pageDao = $pageDao;
}
}

42. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
<?php
abstract class PageExporter {
protected function setPageDao(IPageDao $pageDao) {
$this->pageDao = $pageDao;
}
}
Zur Erinnerung:
Der Vertrag!

43. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
<?php
class PublishedPageExporter extends PageExporter {
public function __construct() {
$this->setPageDao(new PublishedPageDao());
}
}
class WorkingCopyPageExporter extends PageExporter {
public function __construct() {
$this->setPageDao(new WorkingCopyPageDao());
}
}

44. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
"Only deleted code is good code!"
Oliver Gierke

45. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
<?php
class PageExporter {
public function __construct(IPageDao $pageDao) {
$this->pageDao = $pageDao;
}
}

46. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
<?xml version="1.0" encoding="UTF-8" ?>
<beans>
<bean id="ExportLive" class="PageExporter">
<constructor-arg ref="PublishedPageDao" />
</bean>
<bean id="ExportWorking" class="PageExporter">
<constructor-arg ref="WorkingCopyPageDao" />
</bean>
</beans>

47. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung
<?php
// create ApplicationContext instance
$ctx = new ApplicationContext();
// retrieve live exporter
$exporter = $ctx->getBean('ExportLive');
// retrieve working copy exporter
$exporter = $ctx->getBean('ExportWorking');

48. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung II

49. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung II
http://editor.loc/page/[id]/headline/
http://editor.loc/page/[id]/content/
http://editor.loc/page/[id]/teaser/

50. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung II
<?php
class EditPart extends Mvc_Action_AFormAction {
private $pagePartsManager;
private $type;
public function __construct(IPagePartsManager $pm) {
$this->pagePartsManager = $pm;
}
public function setType($ptype) {
$this->type = (int) $type;
}
protected function process(Bo_ABo $formBackObj) {
}
}

51. Real World Dependency Injection – Special Edition
Eine Klasse, mehrfache Ausprägung II
<?xml version="1.0" encoding="UTF-8" ?>
<beans>
<bean id="EditHeadline" class="EditPart">
<constructor-arg ref="PagePartDao" />
<property name="Type" const="PType::Headline" />
</bean>
<bean id="EditContent" class="EditPart">
<constructor-arg ref="PagePartDao" />
<property name="Type" const="PType::Content" />
</bean>
</beans>

52. Real World Dependency Injection – Special Edition
Externe Services mocken

53. Real World Dependency Injection – Special Edition
Externe Services mocken
WS-
WS-
Bookingmanager
Bookingmanager Webservice
Webservice
Connector
Connector

54. Real World Dependency Injection – Special Edition
Externe Services mocken
WS-
WS-
Bookingmanager
Bookingmanager Webservice
Webservice
Connector
Connector
Zur Erinnerung:
Der Vertrag!

55. Real World Dependency Injection – Special Edition
Externe Services mocken
FS-
FS-
Bookingmanager
Bookingmanager Filesystem
Filesystem
Connector
Connector

56. Real World Dependency Injection – Special Edition
Externe Services mocken
FS-
FS-
Bookingmanager
Bookingmanager Filesystem
Filesystem
Connector
Connector
erfüllt den
Vertrag!

57. Real World Dependency Injection – Special Edition
Sauberer, lesbarer Code

58. Real World Dependency Injection – Special Edition
Sauberer, lesbarer Code
<?php
class DeletePage extends Mvc_Action_AAction {
private $pageManager;
public function __construct(IPageManager $pm) {
$this->pageManager = $pm;
}
protected function execute(Mvc_Request $request) {
$this->pageManager->delete(
(int) $request->get('pageId'));
return new ModelAndView($this->getSuccessView());
}
}

59. Real World Dependency Injection – Special Edition
Keine Framework Abhängigkeit

60. Real World Dependency Injection – Special Edition
Keine Framework Abhängigkeit
<?php
class MySampleService implements IMySampleService {
private $sampleDao;
public function __construct(ISampleDao $sampleDao) {
$this->sampleDao = $sampleDao;
}
public function getSample($sampleId) {
try {
return $this->sampleDao->readById($sampleId);
}
catch(DaoException $exception) {}
}
}

61. Real World Dependency Injection – Special Edition
Wie sieht das nun in der Praxis aus?

62. Real World Dependency Injection – Special Edition

63. Real World Dependency Injection – Special Edition
ZendDi – Erste Schritte
<?php
namespace Acme;
class TalkService {
public function __construct() {
}
public function getTalks() {
}
}

64. Real World Dependency Injection – Special Edition
ZendDi – Erste Schritte
<?php
$di = new ZendDiDi();
$service = $di->get('AcmeTalkService');
$service->getTalks();

65. Real World Dependency Injection – Special Edition
ZendDi – Constructor Injection
<?php
namespace Acme;
interface GenericRepository {
public function readTalks();
}
class TalkRepository implements GenericRepository {
public function readTalks() {
}
}
class TalkService {
public function __construct(TalkRepository $repo) {
}
public function getTalks() {
}
}

66. Real World Dependency Injection – Special Edition
ZendDi – Constructor Injection
<?php
$di = new ZendDiDi();
$service = $di->get('AcmeTalkService');
$service->getTalks();

67. Real World Dependency Injection – Special Edition
ZendDi – Setter Injection
<?php
namespace Acme;
class Logger {
public function doLog($logMsg) {
}
}
class TalkService {
public function __construct(TalkRepository $repo) {
}
public function setLogger(Logger $logger) {
}
public function getTalks() {
}
}

68. Real World Dependency Injection – Special Edition
ZendDi – Setter Injection
<?php
$di = new ZendDiDi();
$di->configure(
new ZendDiConfiguration(
array(
'definition' => array(
'class' => array(
'AcmeTalkService' => array(
'setLogger' => array('required' => true)
)
)
)
)
)
);
$service = $di->get('AcmeTalkService');
var_dump($service);

69. Real World Dependency Injection – Special Edition
ZendDi – Interface Injection
<?php
namespace Acme;
class Logger {
public function doLog($logMsg) {
}
}
interface LoggerAware {
public function setLogger(Logger $logger);
}
class TalkService implements LoggerAware {
public function __construct(TalkRepository $repo) {
}
public function setLogger(Logger $logger) {
}
public function getTalks() {
}
}

70. Real World Dependency Injection – Special Edition
ZendDi – Interface Injection
<?php
$di = new ZendDiDi();
$service = $di->get('AcmeTalkService');
$service->getTalks();

71. Real World Dependency Injection – Special Edition
ZendDi – Grundsätzliches
<?php
$di = new ZendDiDi();
$service = $di->get('AcmeTalkService');
var_dump($service);
$service2 = $di->get('AcmeTalkService');
var_dump($service2); // gleiche Instanz wie $service
$service3 = $di->get(
'AcmeTalkService',
array(
'repo' => new phpbnl12TalkRepository()
)
);
var_dump($service3); // neue Instanz

72. Real World Dependency Injection – Special Edition
ZendDi – Builder Definition
<?php
// Dependency beschreiben
$dep = new ZendDiDefinitionBuilderPhpClass();
$dep->setName('AcmeTalkRepository');
// Klasse beschreiben
$class = new ZendDiDefinitionBuilderPhpClass();
$class->setName('AcmeTalkService');
// Injection Methode beschreiben
$im = new ZendDiDefinitionBuilderInjectionMethod();
$im->setName('__construct');
$im->addParameter('repo', 'AcmeTalkRepository');
$class->addInjectionMethod($im);
// Builder konfigurieren
$builder = new ZendDiDefinitionBuilderDefinition();
$builder->addClass($dep);
$builder->addClass($class);

73. Real World Dependency Injection – Special Edition
ZendDi – Builder Definition
<?php
// zur DefinitionList hinzufügen
$defList = new ZendDiDefinitionList($builder);
$di = new ZendDiDi($defList);
$service = $di->get('AcmeTalkService');
var_dump($service);

74. Real World Dependency Injection – Special Edition

75. Real World Dependency Injection – Special Edition
Symfony2
<?php
namespace AcmeTalkBundleController;
use SymfonyBundleFrameworkBundleControllerController;
use SensioBundleFrameworkExtraBundleConfigurationRoute;
use SensioBundleFrameworkExtraBundleConfigurationTemplate;
class TalkController extends Controller {
/**
* @Route("/", name="_talk")
* @Template()
*/
public function indexAction() {
$service = $this->get('acme.talk.service');
return array();
}
}

76. Real World Dependency Injection – Special Edition
Symfony2 – Konfigurationsdatei
Datei services.xml in src/Acme/DemoBundle/Resources/config
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services
http://symfony.com/schema/dic/services/services-1.0.xsd">
</container>

77. Real World Dependency Injection – Special Edition
Symfony2 – Constructor Injection
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services
http://symfony.com/schema/dic/services/services-1.0.xsd">
<services>
<service id="acme.talk.repo"
class="AcmeTalkBundleServiceTalkRepository" />
<service id="acme.talk.service"
class="AcmeTalkBundleServiceTalkService">
<argument type="service" id="acme.talk.repo" />
</service>
</services>
</container>

78. Real World Dependency Injection – Special Edition
Symfony2 – Setter Injection
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services
http://symfony.com/schema/dic/services/services-1.0.xsd">
<services>
<service id="acme.talk.logger"
class="AcmeTalkBundleServiceLogger" />
<service id="acme.talk.repo"
class="AcmeTalkBundleServiceTalkRepository" />
<service id="acme.talk.service"
class="AcmeTalkBundleServiceTalkService">
<argument type="service" id="acme.talk.repo" />
<call method="setLogger">
<argument type="service" id="acme.talk.logger" />
</call>
</service>
</services>
</container>

79. Real World Dependency Injection – Special Edition
Symfony2 – Setter Injection (optional)
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services
http://symfony.com/schema/dic/services/services-1.0.xsd">
<services>
<service id="acme.talk.logger"
class="AcmeTalkBundleServiceLogger" />
<service id="acme.talk.repo"
class="AcmeTalkBundleServiceTalkRepository" />
<service id="acme.talk.service"
class="AcmeTalkBundleServiceTalkService">
<argument type="service" id="acme.talk.repo" />
<call method="setLogger">
<argument type="service" id="acme.talk.logger"
on-invalid="ignore" />
</call>
</service>
</services>
</container>

80. Real World Dependency Injection – Special Edition
Symfony2 – Property Injection
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services
http://symfony.com/schema/dic/services/services-1.0.xsd">
<services>
<service id="acme.talk.repo"
class="AcmeTalkBundleServiceTalkRepository" />
<service id="acme.talk.service"
class="AcmeTalkBundleServiceTalkService">
<property name="talkRepository" type="service"
id="acme.talk.repo" />
</service>
</services>
</container>

81. Real World Dependency Injection – Special Edition
Symfony2 – private / öffentliche Services
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services
http://symfony.com/schema/dic/services/services-1.0.xsd">
<services>
<service id="acme.talk.logger"
class="AcmeTalkBundleServiceLogger" public="false" />
<service id="acme.talk.repo"
class="AcmeTalkBundleServiceTalkRepository" />
<service id="acme.talk.service"
class="AcmeTalkBundleServiceTalkService">
<argument type="service" id="acme.talk.repo" />
<call method="setLogger">
<argument type="service" id="acme.talk.logger" />
</call>
</service>
</services>
</container>

82. Real World Dependency Injection – Special Edition
Symfony2 – Vererbung
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services
http://symfony.com/schema/dic/services/services-1.0.xsd">
<services>
<service id="acme.talk.serviceparent"
class="AcmeTalkBundleServiceTalkService" abstract="true">
<property name="talkRepository" type="service"
id="acme.talk.repo" />
</service>
<service id="acme.talk.service" parent="acme.talk.serviceparent" />
<service id="acme.talk.service2" parent="acme.talk.serviceparent" />
</services>
</container>

83. Real World Dependency Injection – Special Edition
Symfony2 – Scoping
<?xml version="1.0" ?>
<container xmlns="http://symfony.com/schema/dic/services"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://symfony.com/schema/dic/services
http://symfony.com/schema/dic/services/services-1.0.xsd">
<services>
<service id="acme.talk.repo"
class="AcmeTalkBundleServiceTalkRepository" />
<service id="acme.talk.service"
class="AcmeTalkBundleServiceTalkService" scope="prototype">
<property name="talkRepository" type="service"
id="acme.talk.repo" />
</service>
</services>
</container>

84. Real World Dependency Injection – Special Edition

85. Real World Dependency Injection – Special Edition
Flow3 – Constructor Injection
<?php
namespace AcmeDemoController;
use TYPO3FLOW3Annotations as FLOW3;
/**
* @FLOW3Scope("session")
*/
class StandardController extends TYPO3FLOW3MVCControllerActionController {
/**
* @var AcmeDemoServiceTalkServiceInterface
*/
protected $talkService;
public function __construct(
AcmeDemoServiceTalkService $talkService) {
$this->talkService = $talkService;
}
public function indexAction() {
}
}

86. Real World Dependency Injection – Special Edition
Flow3 – Setter Injection (manuell)
<?php
namespace AcmeDemoController;
use TYPO3FLOW3Annotations as FLOW3;
/**
* @FLOW3Scope("session")
*/
class StandardController extends TYPO3FLOW3MVCControllerActionController {
/**
* @var AcmeDemoServiceTalkServiceInterface
*/
protected $talkService;
public function setTalkService(
AcmeDemoServiceTalkService $talkService) {
$this->talkService = $talkService;
}
public function indexAction() {
}
}

87. Real World Dependency Injection – Special Edition
Flow3 – Setter Injection (manuell)
Datei Objects.yaml in Packages/Application/Acme.Demo/Configuration
# @package Acme
AcmeDemoControllerStandardController:
properties:
talkService:
object: AcmeDemoServiceTalkService

88. Real World Dependency Injection – Special Edition
Flow3 – Setter Injection (automatisch)
<?php
namespace AcmeDemoController;
use TYPO3FLOW3Annotations as FLOW3;
/**
* @FLOW3Scope("session")
*/
class StandardController extends TYPO3FLOW3MVCControllerActionController {
/**
* @var AcmeDemoServiceTalkServiceInterface
*/
protected $talkService;
public function injectTalkService(
AcmeDemoServiceTalkService $talkService) {
$this->talkService = $talkService;
}
public function indexAction() {
}
}

89. Real World Dependency Injection – Special Edition
Flow3 – Setter Injection (automatisch)
<?php
namespace AcmeDemoController;
use TYPO3FLOW3Annotations as FLOW3;
/**
* @FLOW3Scope("session")
*/
class StandardController extends TYPO3FLOW3MVCControllerActionController {
/**
* @var AcmeDemoServiceTalkServiceInterface
*/
protected $talkService;
public function injectSomethingElse(
AcmeDemoServiceTalkService $talkService) {
$this->talkService = $talkService;
}
public function indexAction() {
}
}

90. Real World Dependency Injection – Special Edition
Flow3 – Property Injection
<?php
namespace AcmeDemoController;
use TYPO3FLOW3Annotations as FLOW3;
/**
* @FLOW3Scope("session")
*/
class StandardController extends TYPO3FLOW3MVCControllerActionController {
/**
* @var AcmeDemoServiceTalkService
* @FLOW3Inject
*/
protected $talkService;
public function indexAction() {
}
}

91. Real World Dependency Injection – Special Edition
Flow3 – Property Injection (mittels Interface)
<?php
namespace AcmeDemoController;
use TYPO3FLOW3Annotations as FLOW3;
/**
* @FLOW3Scope("session")
*/
class StandardController extends TYPO3FLOW3MVCControllerActionController {
/**
* @var AcmeDemoServiceTalkServiceInterface
* @FLOW3Inject
*/
protected $talkService;
public function indexAction() {
}
}

92. Real World Dependency Injection – Special Edition
Flow3 – Property Injection (mittels Interface)
Datei Objects.yaml in Packages/Application/Acme.Demo/Configuration
# @package Acme
AcmeDemoServiceTalkServiceInterface:
className: 'AcmeDemoServiceTalkService'

93. Real World Dependency Injection – Special Edition
Flow3 – Scoping
<?php
namespace AcmeDemoController;
use TYPO3FLOW3Annotations as FLOW3;
/**
* @FLOW3Scope("session")
*/
class StandardController extends TYPO3FLOW3MVCControllerActionController {
/**
* @var AcmeDemoServiceTalkServiceInterface
* @FLOW3Inject
*/
protected $talkService;
public function indexAction() {
}
}

94. Real World Dependency Injection – Special Edition
Vorteile

95. Real World Dependency Injection – Special Edition
Vorteile
Lose Kopplung,
gesteigerte Wiederverwendbarkeit !

96. Real World Dependency Injection – Special Edition
Vorteile
Codeumfang reduzieren,
Fokus auf das Wesentliche!

97. Real World Dependency Injection – Special Edition
Vorteile
Hilft Entwicklern den Code
besser zu verstehen!

98. Real World Dependency Injection – Special Edition
Nachteil – Kein JSR330 für PHP
Bucket, Crafty, FLOW3, Imind_Context,
PicoContainer, Pimple, Phemto,
Stubbles, Symfony 2.0, Sphicy, Solar,
Substrate, XJConf, Yadif, ZendDi , Lion
Framework, Spiral Framework, Xyster
Framework, …

99. Real World Dependency Injection – Special Edition
Nachteil – Entwickler müssen umdenken
Konfiguration ↔ Laufzeit

100. Real World Dependency Injection – Special Edition
Nachteil – Keine IDE Unterstützung!

101. Vielen Dank!

102. Image Credits
http://www.sxc.hu/photo/1028452