Dependency Injectionとデザインパターン / understand_di_and_design_patterns

PHPカンファレンス沖縄の発表資料です。
https://phpcon.okinawa.jp/

参考文献URL
・『Dependency Injection Principles, Practices, and Patterns』
https://www.amazon.com/dp/161729473X
・「InversionOfControl」
https://martinfowler.com/bliki/InversionOfControl.html
・「Inversion of Control Containers and the Dependency Injection pattern」
https://martinfowler.com/articles/injection.html
・『オブジェクト指向でなぜつくるのか 第３版』
https://www.nikkeibp.co.jp/atclpubmkt/book/21/S00180/
・『PHPによるデザインパターン入門』
https://www.shuwasystem.co.jp/book/4798015164.html
・『オブジェクト指向のこころ』
https://www.maruzen-publishing.co.jp/item/b294729.html

その他URL
・『Design Patterns 15 Years Later: An Interview with Erich Gamma, Richard Helm, and Ralph Johnson』Oct 22, 2009
https://www.informit.com/articles/article.aspx?p=1404056
・「GoF デザインパターン チートシート」
https://qiita.com/tanakahisateru/items/df03d2558f9499d1a64a
・「48. GoFデザインパターンとDI (前編) w/ twada」
https://open.spotify.com/episode/3WF6xxUOnHAQR0xt3gC2Rm

Transcript

1. %FQFOEFODZ
   *OKFDUJPOͱ
   σβΠϯύλʔϯ 
   ʰ1)1$0/'
   0,*/"8"
   ʱ
   !SVLJBEJB
   4IP
   :BNBEB
2. ࣗݾ঺հ • ࢁాɹ঵ʢ΍·ͩɹ͠ΐ͏ʣ • ίωώτגࣜձࣾͰόοΫΤϯυΤϯδχΞΛ͍ͯ͠·͢ɻ • #CakePHP #TypeScript #React
3. ຊ೔͓࿩͢Δ಺༰͸ͪ͜Β w %FQFOEFODZ
   *OKFDUJPOͷ֓ཁΛ஌Δ
   w σβΠϯύλʔϯΛ஌Δ
   w %FQFOEFODZ
   *OKFDUJPOͷσβΠϯύλʔϯʹ৮ΕΔ
   w ˞1)1ݻ༗ͷ࿩͸গͳΊͰ͢ Կ౓΋஻Δʹ͸গ͠௕͍ͷͰɺ
   ʮ%*ʯͱུͭͭ͠ਐΊ·͢ɻ
4. ͔͜͜Β͕ຊฤ
5. ʮ%FQFOEFODZ
   *OKFDUJPOͷ֓ཁʯ
6. Dependency Injectionͷ֓ཁ ͦ΋ͦ΋%*ͱ͸Կͳͷ͔ʁ
7. Dependency Injectionͷ֓ཁ %*ͱ͸ํ๏࿦Ͱ͢
8. “Dependency Injection Principles, Practices, and Patterns” Part 1 Putting Dependency Injection on the map “Dependency Injection is a set of software design principles and patterns that enables you to develop loosely coupled code.” 8 Dependency Injectionͷ֓ཁ
9. “Dependency Injection͸ɺૄ݁߹ͷίʔυΛ։ ൃ͢ΔͨΊͷιϑτ΢ΣΞઃܭݪଇ͓Αͼύ λʔϯͷηοτͰ͢” 9 Dependency Injectionͷ֓ཁ
10. ͜͜·Ͱͷ·ͱΊ w อकੑͷߴ͍ίʔυͷ࣮ݱΛ໨తͱͨ͠ιϑτ΢ΣΞઃܭݪଇͱύ λʔϯͷηοτɻ
    w ιϑτ΢ΣΞઃܭͷʮͭͷݪଇʯͷͭʹؚ·ΕΔૄ݁߹ʢগͳ͍݁߹ʣ
    w ʮૄ݁߹ͷ࣮ݱΛ໨తͱͨ͠σβΠϯύλʔϯʯͱ͍͏ͷ͕ద੾ͳද ݱͱݴ͑Δɻ
    w ˞༨ஊ
    ʰ%*
    1BUUFSOʱͱ͍͏ݺশ΋ଘࡏ͠·͢
11. ࣍ʹ%*͕ੜ·ΕͨܦҢʹ͍ͭͯ
    ݟ͍͖ͯ·͠ΐ͏ Dependency Injectionͷ֓ཁ
12. %*͕ੜ·ΕͨܦҢ
13. %*ͷىݯ w ىݯ͸+BWBͷίϛϡχςΟ
    w ೥ʙ೥ࠒʹ.BSUJO
    'PXMFS͕ఆٛͨ͠ݴ༿
    w ࢀߟ
    
    IUUQTNBSUJOGPXMFSDPNBSUJDMFTJOKFDUJPOIUNM
    w ʮ*OWFSTJPO
    PG
    $POUSPMʢ*P$ʣʯͱ͍͏֓೦͕౰࣌ଘࡏ͓ͯ͠Γɺ ͦͷ֓೦Λ۩ମԽ͠ɺύλʔϯͷͭͱͯ͠ѻ͏ͨΊͷݴ༿͕࡞Γग़ ͞Εͨɻ
14. *P$ʢ੍ޚͷٯసʣͱ͸Կͳͷ͔ʁ Dependency Injectionͷ֓ཁ - DI͕ੜ·ΕͨܦҢ
15. *P$ʢ੍ޚͷٯసʣ w ʰϋϦ΢ουͷݪଇʱͱ΋ݺ͹ΕΔੑ࣭
    w ϓϩάϥϜʹ͓͍ͯɺʮݺͼग़͢ଆʯͱʮݺͼग़͞ΕΔଆʯ͕ैདྷ ͷϓϩάϥϜͱٯʹͳΔݱ৅Λࢦ͢ɻ
    w ޱޠతͳݴ͍ճ͠ʹ͢Δͱʮඞཁͳ࣌͸ͪ͜Β͔Βݺͼ·͢ʯͱ͍ ͏ҙຯ߹͍ʹͳΔɻ
16. *P$ʢ੍ޚͷٯసʣ w ϑϨʔϜϫʔΫͷੑ࣭Λදݱ͢ΔͨΊʹ΋༻͍ΒΕΔɻ
    w ։ൃऀ͕ఆٛͨ͠ϝιου͕ݺͼग़͞ΕΔλΠϛϯά͸ϑϨʔϜ ϫʔΫଆʹҕͶΒΕ͍ͯΔɻ
    w ίϯτϩʔϧͷ࣋ͪओ͕։ൃऀ͔ΒϑϨʔϜϫʔΫʹٯస͍ͯ͠ Δɻ
17. จষͷΈͩͱ఻ΘΓʹ͍͘ͷͰ
    ίʔυͰݟͯΈ·͠ΐ͏ Dependency Injectionͷ֓ཁ - DI͕ੜ·ΕͨܦҢ
18. 1)16OJUͷίʔυྫ
19. 1)16OJUͷςετίʔυ class ItemsTableTest extends TestCas e { public $fixtures = ['app.Items'] ; public function setUp( ) { parent::setUp() ; $this->Items = TableRegistry::getTableLocator()->get('Items') ; } public function tearDown( ) { TableRegistry::clear() ; } }
20. 1)16OJUͷςετίʔυʢ੍ޚͷٯసʣ class ItemsTableTest extends TestCas e { public $fixtures = ['app.Items'] ; public function setUp( ) { parent::setUp() ; $this->Items = TableRegistry::getTableLocator()->get('Items') ; } public function tearDown( ) { TableRegistry::clear() ; } } ४උɺޙ࢝຤ɺςετ࣮ߦͷλΠϛϯάΛ
    ϑϨʔϜϫʔΫଆ͕Ѳ͍ͬͯΔ
21. *P$ͱ%*ͷؔ܎ੑ w %*͸ݴ͍׵͑Ε͹ʮґଘؔ܎ʹର͢Δ੍ޚͷٯసʯͱදݱͰ͖Δɻ
    w ͔͠͠ɺʮ੍ޚͷٯసʯͱ͍͏දݱ͕แׅత͗͢ΔͷͰɺʮ%*
    
    *P$ʯ ͱ͢Δͷ͸ਖ਼֬Ͱ͸ͳ͍ɻ
    w ʮґଘؔ܎ʹର͢Δ੍ޚͷٯసʯΛͭͷύλʔϯͱͯ͠ଊ͑Δͨ Ίɺ%FQFOEFODZ
    *OKFDUJPOͱ͍͏໋໊͕஀ੜͨ͠ɻ
22. Inversion of Control Dependency Injection Dependency Injectionͷ֓ཁ - DI͕ੜ·ΕͨܦҢ
23. จষͩͱ఻͑ʹ͍͘ͷͰ
    ίʔυͰޠΓ·͢ Dependency Injectionͷ֓ཁ
24. ྫ
    
    ϝʔϧૹ৴ͷॲཧ
25. class EmailSender { private $mailClient ; private $address ; private $text ; public function __construct($address, $text ) { // ʮAmazon Simple Email ServiceʯΛ࢖༻ͯ͠ϝʔϧૹ৴Λѻ͏Ϋϥε $this->mailClient = new AwsSesClient() ; $this->address = $address ; $this->text = $text ; } public function send( ) { $this->mailClient->send($this->address, $this->text) ; } } $emailSender = new EmailSender('test@example.com', 'ςετϝʔϧͰ͢Ͷ') ; $emailSender->send(); Ұݟ໰୊ͳͦ͞͏ʹݟ͑Δ͕ɾɾʁ
26. class EmailSender { private $mailClient ; private $address ; private $text ; public function __construct($address, $text ) { // ʮAmazon Simple Email ServiceʯΛ࢖༻ͯ͠ϝʔϧૹ৴Λѻ͏Ϋϥε $this->mailClient = new AwsSesClient() ; $this->address = $address ; $this->text = $text ; } public function send( ) { $this->mailClient->send($this->address, $this->text) ; } } $emailSender = new EmailSender('test@example.com', 'ςετϝʔϧͰ͢Ͷ') ; $emailSender->send(); "XT4FT$MJFOUલఏͷ࣮૷ʹͳ͓ͬͯΓ
    ີ݁߹͕ൃੜ͍ͯ͠Δɻ
27. &NBJM4FOEFSΫϥε͕࣋ͭ՝୊ w ಛఆͷαʔϏε΁ͷґଘ
    w αʔϏεΛมߋ͢Δཁ͕݅ग़͖ͯͨ৔߹ɺ&NBJM4FOEFSΛେ͖͘ॻ ͖׵͑Δඞཁ͕ग़ͯ͘Δɻ
    w ςελϏϦςΟͷ௿͞
    w &NBJM4FOEFSΫϥεͷςετʹ"XT4FTΫϥε΋ඞཁʹͳΔɻ
28. class EmailSender { private $mailClient ; private $address ; private $text ; public function __construct($client, $address, $text ) { $this->mailClient = $client; $this->address = $address ; $this->text = $text ; } public function send( ) { $this->mailClient->send($this->address, $this->text) ; } } $emailSender = new EmailSender(new AwsSesClient(), 'test@example.com', 'ςετϝʔϧͰ͢Ͷ') ; $emailSender->send(); ࢖༻͢ΔαʔϏεʹؔ͢Δ৘ใΛ
    ֎͔Βࢦఆʢ֎෦͔Βͷґଘ஫ೖʣ
29. ૹ৴ॲཧͷΠϯλϑΣʔε interface iEmailClient { public function send($address, $text) ; } class AwsSesClient implements iEmailClient { private $mailClient ; public function __construct( ) { $this->mailClient = new AwsSes() ; } public function send($address, $text){ } } &NBJM4FOEFS͕ґଘ͢Δ෦෼Λ
    JOUFSGBDFͱͯ͠දݱ͠ɺ
    ґଘ౓ͷ௿ݮΛਤ͍ͬͯΔ
32. ※࢖͏αʔϏε͕มΘͬͯ΋ɺ͜͜Λࠩ͠ସ͑Ε͹OK
33. &NBJM4FOEFSΫϥεʹର͢Δ%*ͷ࣮ફ w Ϋϥεࣗ਎͕ґଘઌΛܾఆͤͣɺ֎෦͔ΒґଘઌΛࢦఆ͍ͯ͠Δɻ
    w &NBJM4FOEFSࣗ਎͸ʮϝʔϧॲཧΛ࣮ߦ͢Δͷ͕ͲͷαʔϏεͳͷ ͔ʯΛ஌͍ͬͯΔඞཁ͕ͳ͘ͳͬͨɻ
    w ʢ෭࣍తͳޮՌͰ͸͋Δ͕ʣςετʹඞཁͳϞοΫΛ࡞੒͠΍͘͢ͳ ΓɺςελϏϦςΟ΋޲্͍ͯ͠Δɻ
34. %*ͷ࿩Λ͜͜Ͱ۠੾Γ
    σβΠϯύλʔϯͷ࿩Λ͠·͢ Dependency Injectionͷ֓ཁ
35. ʮσβΠϯύλʔϯΛ஌Δʯ
36. օ͞Μ͸σβΠϯύλʔϯͱ͍͏ݴ༿Λ ͝ଘ஌Ͱ͠ΐ͏͔ʁ σβΠϯύλʔϯΛ஌Δ
37. σβΠϯύλʔϯͱ͸ʁ w ػೳ֦ு΍࠶ར༻͕͠΍͍͢ιϑτ΢ΣΞΛ࡞ΔͨΊʹઌਓ͕޻෉͠ ͖ͯͨϊ΢ϋ΢ΛूΊͨ΋ͷɻ
    w యܕతͳղ๏΋వΊΒΕ͍ͯΔͷͰɺ࣮ࡍͷϓϩάϥϛϯά΍ઃܭ Λ͢Δ্Ͱ໾ʹཱͭखҾ͖ʹͳΔɻ
38. σβΠϯύλʔϯͱ͍͏ݴ༿ͷ༝དྷ w ݩʑ͸ݐஙͷ෼໺Ͱੜ·Εͨݴ༿
    w ݐ෺΍ࢢ֗ͷઃܭɾݐஙʹ͓͚Δ༷ʑͳτϨʔυΦϑ΍໰୊ɻͦͯ͠ɺ ͦΕʹର͢Δయܕతͳղܾํ๏ΛవΊͨॻ੶Ͱ͋Δʰύλϯɾϥϯ ήʔδʕ؀ڥઃܭͷखҾʱʢʣʹͯ࢖༻͞Εͨɻ
    w ˞ʰ1)1ʹΑΔσβΠϯύλʔϯೖ໳ʱ͔ΒҰ෦ൈਮ
    w ʰ%FTJHO
    1BUUFSOT
    &MFNFOUT
    PG
    3FVTBCMF
    0CKFDU0SJFOUFE
    4PGUXBSFʱʢ˞௨শ(P'ຊʣʹΑΓɺʮσβΠϯύλʔϯʯͷݴ༿͕޿ ͘஌ΒΕΔ͜ͱʹͳͬͨɻ
39. (P'ͷσβΠϯύλʔϯͱ͸ʁ w ʰ%FTJHO
    1BUUFSOT
    &MFNFOUT
    PG
    3FVTBCMF
    0CKFDU0SJFOUFE
    4PGUXBSFʱͷதͰ঺հ͞Ε͍ͯΔͷσβΠϯύλʔϯɻ
    w ஶऀͰ͋Δ໊͕ʰ(BOH
    PG
    'PVSʢ(P'ʣʱͱݺ͹Ε͓ͯΓɺ൴Β ͕ൃදͨ͠σβΠϯύλʔϯ͕ʮ(P'ͷσβΠϯύλʔϯʯͱҰൠ తʹݺ͹ΕΔΑ͏ʹͳͬͨɻ
    w ͪͳΈʹॳ൛͕ൃߦ͞Εͨͷ͸ɺ೥݄೔ɻ
    w ˞ຊൃදͰ͸ɺͷσβΠϯύλʔϯΛશͯ঺հ͢Δ͜ͱ͸͠·ͤΜɻ
40. σβΠϯύλʔϯΛ
    ࢖ͬͯΈΔ
41. $47ɺ9.-ɺ+40/ϑΝΠϧΛ
    ಡΈࠐΜͰը໘දࣔ͢ΔॲཧΛ
    ߟ͑ͯΈ·͢ɻ σβΠϯύλʔϯΛ஌Δ
42. class FileReader { private $filename ; function __construct($filename) { // ※ ֦ுࢠνΣοΫͷྫ֎ॲཧ͸ল͍͍ͯ·͢ $this->filename = $filename ; } function display() { if (stripos($this->filename, '.csv') !== false) { // CSVͷॲཧ } else if (stripos($this->filename, '.xml') !== false) { // XMLͷॲཧ } else if (stripos($this->filename, '.json') !== false) { // JSONͷॲཧ } } } $fileReader = new FileReader('sample.csv') ; $fileReader->display();
43. ݱ࣌఺ͷ՝୊ w ڞ௨͢ΔՕॴ͸͋Γͭͭ΋গ͠ҟͳΔෳ਺ͷॲཧ͕ɺͭͷϝιου ಺Ͱ෼ذॲཧ͞Ε͍ͯΔɻ
    w ͔͠΋ɺ͓ޓ͍ͷॲཧʹ͸ؔ࿈ੑ͕ͳ͍ɻ
    w ʮڽू౓͕௿͍ʯͱදݱ͞ΕΔঢ়ଶɻ
    w ͍ͭͰʹݴ͏ͱɺEJTQMBZϝιουͷςετ΋͠ʹ͍͘ɻ
44. (P'ͷσβΠϯύλʔϯ
    
    'BDUPSZ
    .FUIPE w ΦϒδΣΫτੜ੒࣌ͷΠϯλϑΣʔεͷΈΛఆٛ͠ɺͲͷΫϥεΛΠ ϯελϯεͱ͢Δ͔ΛαϒΫϥεʹ೚ͤΔύλʔϯͰ͢ɻ
    w ʮ'BDUPSZʯͱ͸ʮΫϥεͷΠϯελϯεΛੜ੒͢ΔαϒΫϥεʯ Λࢦ͍ͯ͠·͢ɻ
    w ࠓճ͸ɺϑΝΠϧܗࣜʹؔ܎ͳ͘ಉ༷ͷػೳΛఏڙ͢ΔΫϥεͷΠ ϯελϯεΛ࡞ΕΔΑ͏ʹ͠·͢ɻ
45. 'BDUPSZ
    .FUIPEύλʔϯͷΫϥεਤ
46. ڞ௨ΠϯλϑΣʔεͷ࣮૷ /* * * ಡΈࠐΈػೳͱදࣔػೳΛදݱ͢ΔΠϯλϑΣʔε * / interface Reader { public function read() ; public function display() ; } // ͜͜ʹ͸ϑΝΠϧܗࣜʹؔΘΒͣڞ௨ॲཧͱͳΔϝιουΛఆٛ
47. class CSVReader extends Reader { private $filename ; private $file ; function __construct($filename) { $this->filename = $filename ; } function read() { $file = new SplFileObject($this->filename) ; $file->setFlags(SplFileObject::READ_CSV) ; $this->file = $file ; } function display() { foreach ($this->file as $line) { /* ߦ͝ͱʹॲཧ͍ͯ͘͠ */ } } } $47ϑΝΠϧΛѻ͏ΫϥεͷΠϯλϑΣʔε࣮૷
    จࣈίʔυͷΤϯίʔυɺྫ֎ॲཧ͸ল͍͍ͯ·͢ɻ
48. 'BDUPSZͷ࣮૷ class ReaderFactory { function create($filename) { return $this->createReader($filename) ; } /* * * ϑΝΠϧ֦ுࢠΛݩʹReaderΫϥεͷαϒΫϥεΛܾΊΔ * / private function createReader($filename) { if (stripos($this->filename, '.csv') !== false) { return new CSVReader($filename) ; } else if (stripos($this->filename, '.xml') !== false) { return new XMLReader($filename) ; } else if (stripos($this->filename, '.json') !== false) { return new JSONReader($filename) ; } } } ෼ذॲཧͰ൑அ͢Δͷ͸
    ʮඞཁͳαϒΫϥε͕ͲΕͳͷ͔ʯͷΈ ݻ༗ͷॲཧ͸
    αϒΫϥε಺ʹӅṭ͞Ε͍ͯΔ
49. ΞϓϦέʔγϣϯଆ͔Βͷར༻ $filename = ‘users.xml’ ; // ͲͷαϒΫϥεΛ࢖༻͢Δ͔ɺFactory͕൑அ $readerFactory = new ReaderFactory() ; // FactoryΛݩʹඞཁͳReaderΫϥεͷΠϯελϯεΛੜ੒ $reader = $readerFactory->create($filename) ; // ΞϓϦέʔγϣϯ͸ɺΠϯλϑΣʔεΛݩʹ࣮ͨ͠૷(read, display)Λར༻͢ΔͷΈ $reader->read() ; $reader->display() ;
50. 'BDUPSZ
    .FUIPEͰԿ͕վળ͞Εͨʁ w ϑΝΠϧ֦ுࢠ͝ͱͷॲཧΛαϒΫϥεʹవΊΔ͜ͱ͕Ͱ͖ͨɻ
    w ڽू౓ͷߴ͍ঢ়ଶʹͳ͓ͬͯΓɺςελϏϦςΟ΋޲্ɻ
    w ΞϓϦέʔγϣϯͰѻ͏֦ுࢠ͕มԽͯ͠΋ɺαϒΫϥεΛ௥Ճͯ͠ 'BDUPSZΛՃච͢Δ͚ͩͰࡁΉɻ
51. 'BDUPSZ
    .FUIPEύλʔϯͷΫϥεਤʢ࠶ܝʣ ※ϑΥʔϚοτ͕มΘͬͯ΋ɺ͚ͩ͜͜มߋ͢Ε͹OK
52. σβΠϯύλʔϯΛ஌ΔϝϦοτ w ઃܭͷࢦ਑ͱͳΔɻ
    w σβΠϯύλʔϯΛͦͷ··࢖ͬͯ΋ղܾͰ͖ͳ͍৔߹΋͋Δ͕ɺ ղܾʹ׆͔ͤΔՄೳੑ͸े෼͋Δɻ
    w ڞ௨ݴޠͱͯ͠༻͍Δɻ
    w ྫɿʮ'BDUPSZ
    .FUIPE͕ར༻Ͱ͖·ͤΜ͔ʁʯ
    w ύλʔϯ໊ΛೝࣝͰ͖Δਓಉ࢜ͰͳΒɺ͜Ε͚ͩͰ఻ΘΔɻ
53. ͜͜Ͱ࠶౓ɺ%*ͷ࿩ʹ໭Γ·͢ɻ σβΠϯύλʔϯΛ஌Δ
54. %FQFOEFODZ
    *OKFDUJPOͱ
    σβΠϯύλʔϯͷؔΘΓ
55. %*͕ओ࣠ͳͷʹɺ
    σβΠϯύλʔϯʹ৮Εͨͷ͸Կނʁ Dependency InjectionͱσβΠϯύλʔϯͷؔΘΓ
56. %*΋σβΠϯύλʔϯ w ʰ%FTJHO
    1BUUFSOTʱͰఆٛ͞ΕͨͷσβΠϯύλʔϯ΋ɺ೥݄͕ ܦͬͨ͜ͱͰҰ෦͕ݟ௚͞Εɺ%*΋ʰ%FTJHO
    1BUUFSOTʱͷҰ෦ʹ͠ ·ͨ͠ɻ
    w ʰ%FTJHO
    1BUUFSOT
    
    :FBST
    -BUFS
    "O
    *OUFSWJFX
    XJUI
    &SJDI
    (BNNB
    3JDIBSE
    )FMN
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57. $SFBUJPOBMʢੜ੒ʣΛ໨తͱͨ͠ύλʔϯ w ೥࣌఺
    w 'BDUPSZ
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    w ೥ʹ࠶ఆٛ͞Εͨޙ
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58. ࠷ޙʹɺ%*ͷύλʔϯʹ৮Ε͍͖ͯ·͢ Dependency InjectionͱσβΠϯύλʔϯͷؔΘΓ
59. ʮ%FQFOEFODZ
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    ͷσβΠϯύλʔϯʹ৮ΕΔʯ
60. %*ͷύλʔϯ w $POTUSVDUPS
    *OKFDUJPO
    w .FUIPE
    *OKFDUJPO
    w 1SPQFSUZ
    *OKFDUJPO
    w ˞4FUUFS
    *OKFDUJPOͱ΋ݺ͹Ε·͢ɻ ࠓճͷൃදͰ͸
    $POUSVDUPS
    *OKFDUJPOͷΈʹ৮Ε·͢ɻ
61. $POUSVDUPS
    *OKFDUJPO w Ϋϥε͕ґଘؔ܎ͷΠϯελϯεΛඞཁͱ͍ͯ͠Δ৔߹ɺΫϥεͷί ϯετϥΫλͰґଘઌΛఏڙ͢Δ͜ͱͰɺকདྷతͳ࢖༻ͷͨΊͷࢀর Λอଘ͓ͯ͘͠ख๏ɻ
    w %*ͷجຊͱ΋ݴΘΕΔύλʔϯ จষ͚ͩͰ͸఻ΘΓʹ͍͘ͷͰ
    %*ͷઆ໌ͷ୊ࡐͱͨ͠ϝʔϧૹ৴ॲཧΛ
    ݩʹઆ໌͍͖ͯ͠·͢ɻ
62. ઌఔͷϝʔϧૹ৴ॲཧΛ
    ࢥ͍ग़͍ͯͩ͘͠͞ Dependency InjectionͱσβΠϯύλʔϯͷؔΘΓ
64. ࣮͸ɺ͜͜Ͱ΍͍ͬͯΔͷ͕
    ʮ$POTUSVDUPS
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65. class EmailSender { private $mailClient ; private $address ; private $text ; public function __construct($client, $address, $text ) { $this->mailClient = $client; $this->address = $address ; $this->text = $text ; } public function send( ) { $this->mailClient->send($this->address, $this->text) ; } } $emailSender = new EmailSender(new AwsSesClient(), 'test@example.com', 'ςετϝʔϧͰ͢Ͷ') ; $emailSender->send(); &NBJM4FOEFSͷґଘΛ
    ΞϓϦέʔγϣϯଆ͔Β
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67. ࠓճͷ·ͱΊ
68. ࠓճͷ·ͱΊ w ʮ%FQFOEFODZ
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69. /FYU
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70. ༨ஊ w (P'ͷσβΠϯύλʔϯͷ঺հΛ͍ͯ͠Δ͚ͩͰ෼͕ա͗ڈΔͷͰɺ৮ΕΔͷ ͸͋͑ͯ߇͑Ίʹ͠·ͨ͠ɻ
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71. ࢀߟจݙ • ʰDependency Injection Principles, Practices, and Patternsʱ • https://www.amazon.com/dp/161729473X • ʮInversionOfControlʯ • https://martinfowler.com/bliki/InversionOfControl.html • ʮInversion of Control Containers and the Dependency Injection patternʯ • https://martinfowler.com/articles/injection.html
72. ࢀߟจݙ • ʰΦϒδΣΫτࢦ޲Ͱͳͥͭ͘Δͷ͔ ୈ̏൛ʱ • https://www.nikkeibp.co.jp/atclpubmkt/book/21/S00180/ • ʰPHPʹΑΔσβΠϯύλʔϯೖ໳ʱ • https://www.shuwasystem.co.jp/book/4798015164.html • ʰΦϒδΣΫτࢦ޲ͷ͜͜Ζʱ • https://www.maruzen-publishing.co.jp/item/b294729.html
73. ൃදʹର͢ΔϑΟʔυόοΫ͸ େ׻ܴͰ͢ʂ
74. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ