Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
ScalaによるDDDライクなプロダクト開発
Search
Yoshinobu Wakamatsu
May 23, 2016
Technology
0
500
ScalaによるDDDライクなプロダクト開発
2016/5/23 モバイルファクトリーさんとの勉強会で話したスライド
Yoshinobu Wakamatsu
May 23, 2016
Tweet
Share
More Decks by Yoshinobu Wakamatsu
See All by Yoshinobu Wakamatsu
金融領域におけるサービス開発の進め方
yshnb
0
710
資産運用スタートアップの開発で採用した、PlayによるClean Arcitectureでの設計・開発事例
yshnb
5
970
ReactベースのSPA開発で開発者が気をつけたいSEOのお話
yshnb
2
1.8k
Fundsのアーキテクチャについて
yshnb
0
260
Applivの開発体制から考える、理想の開発体制とは?
yshnb
2
10k
Other Decks in Technology
See All in Technology
会社紹介資料 / Sansan Company Profile
sansan33
PRO
6
380k
Firestore → Spanner 移行 を成功させた段階的移行プロセス
athug
1
490
Autonomous Database - Dedicated 技術詳細 / adb-d_technical_detail_jp
oracle4engineer
PRO
4
10k
Generative AI Japan 第一回生成AI実践研究会「AI駆動開発の現在地──ブレイクスルーの鍵を握るのはデータ領域」
shisyu_gaku
0
290
共有と分離 - Compose Multiplatform "本番導入" の設計指針
error96num
2
630
株式会社ログラス - 会社説明資料【エンジニア】/ Loglass Engineer
loglass2019
4
64k
ハードウェアとソフトウェアをつなぐ全てを内製している企業の E2E テストの作り方 / How to create E2E tests for a company that builds everything connecting hardware and software in-house
bitkey
PRO
1
150
Language Update: Java
skrb
2
300
KotlinConf 2025_イベントレポート
sony
1
140
現場で効くClaude Code ─ 最新動向と企業導入
takaakikakei
1
250
職種の壁を溶かして開発サイクルを高速に回す~情報透明性と職種越境から考えるAIフレンドリーな職種間連携~
daitasu
0
170
JTCにおける内製×スクラム開発への挑戦〜内製化率95%達成の舞台裏/JTC's challenge of in-house development with Scrum
aeonpeople
0
230
Featured
See All Featured
Writing Fast Ruby
sferik
628
62k
Stop Working from a Prison Cell
hatefulcrawdad
271
21k
[RailsConf 2023] Rails as a piece of cake
palkan
57
5.8k
Imperfection Machines: The Place of Print at Facebook
scottboms
268
13k
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
Build your cross-platform service in a week with App Engine
jlugia
231
18k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
139
34k
Why You Should Never Use an ORM
jnunemaker
PRO
59
9.5k
Principles of Awesome APIs and How to Build Them.
keavy
126
17k
The Straight Up "How To Draw Better" Workshop
denniskardys
236
140k
Typedesign – Prime Four
hannesfritz
42
2.8k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
32
1.6k
Transcript
4DBMBʹΑΔ%%%ϥΠΫͳ ϓϩμΫτ։ൃ φΠϧɾϞόΠϧϑΝΫτϦʔ߹ಉษڧձ φΠϧגࣜձࣾएদܚ৴
ࣗݾհ एদܚ৴ φΠϧגࣜձࣾΤϯδχΞ 5XJUUFSɾ(JUIVCZTIOC ʢ΄ͱΜͲ׆ಈͯ͠·ͤΜʣ ͜͜࠷ۙ4DBMBΛ͍ͬͯ·͢ WJNΛ͍ͬͯ·͢
ࠓճͷϓϩμΫτ։ൃʹ͍ͭͯ
ࠓճͷϓϩμΫτ։ൃͷ݅ • Ϗδωε্ͷཁٻ͕ൺֱతଟذʹΘͨΔ • ؔऀͷϩʔϧଟ͍ – ϓϩμΫτΦʔφʔɺΦϖϨʔλʔɺཧ෦ͳͲ • ظతͳӡ༻͕ݟࠐ·ΕΔ
͜ΕΒͷ݅Λߟྀͯ͠ υϝΠϯۦಈઃܭʢ%%%ʣΛ࠾༻
ࠓճͷʮυϝΠϯۦಈઃܭʯʹ͍ͭͯ • υϝΠϯۦಈઃܭͷίϯηϓτΛऔΓೖΕͯɺ ઃܭ։ൃΛ࣮ࢪ • ඞͣ͠ݪଇ௨ΓͰͳ͍ܗͰ υϝΠϯۦಈઃܭͷίϯηϓτΛ࠾༻
ͳͥ4DBMBͰ%%%ͳͷ͔ʁ • ࣮༻తͳγϯλοΫεͷ؆ܿ͞ – ϞσϧΛ࣮ʹམͱ͢ίετ͕͍ • ܕγεςϜ͕ڧྗ – ੩తܕ͚ʹΑΔܕ҆શੑ ϏδωεϩδοΫ͕ෳࡶͳέʔεͰޮՌత
– ϞσϧΛܕͰදݱ͢Δ͜ͱ͕Ͱ͖Δ
υϝΠϯۦಈઃܭͱ
υϝΠϯۦಈઃܭͱ ιϑτΣΞͷઃܭख๏Ͱ͋ΓɺʮෳࡶͳυϝΠ ϯͷઃܭɺϞσϧϕʔεͰߦ͏͖ʯͰ͋Γɺ ·ͨʮେͷιϑτΣΞϓϩδΣΫτͰɺγ εςϜΛ࣮͢ΔͨΊͷಛఆͷٕज़Ͱͳ͘ɺυ ϝΠϯͦͷͷͱυϝΠϯͷϩδοΫʹযΛஔ ͖͘ʯͰ͋Δͱ͢Δ CZ8JLJQFEJB
ʁʁʁ
͏গ͠Θ͔Γ͘͢
υϝΠϯۦಈͰͳ͍ઃܭͷྫ ࣮ݱ͍ͨ͠ػೳɾݟͨΛܾΊΔ ٕज़બఆઃܭΛߦ͍ɺ ۩ମతͳ࣮ٕज़ͰػೳΛ࣮ݱ͢Δ ͜ΕυϝΠϯͷຊ࣭͕Կͳͷ͔ʁΛ໌Β͔ʹ͓ͯ͠Βͣɺ υϝΠϯۦಈઃܭͰͳ͍
υϝΠϯۦಈઃܭʁ ϏδωεྖҬͷϢϏΩλεݴޠ ʢ౷ҰݴޠʣΛߏங ʮ࣮ݱ͍ͨ͜͠ͱʯʮ࣮ݱ͢Δ͜ͱʯΛ ϢϏΩλεݴޠͰදݱ ϢϏΩλεݴޠͰදݱ͞ΕͨυϝΠϯϞσϧΛ ۩ମతͳ࣮ٕज़Ͱ࣮͢Δ
ϢϏΩλεݴޠʹΑΔ υϝΠϯϞσϧ
ϓϩμΫτ։ൃʹ͓͚ΔݴޠͷִͨΓ ϓϩμΫτΦʔφʔ ։ൃऀ ΫϥΠΞϯτ ΫϥΠΞϯτ
ϓϩμΫτ։ൃʹ͓͚ΔݴޠͷִͨΓ ϓϩμΫτΦʔφʔ ։ൃऀ ΫϥΠΞϯτ ΫϥΠΞϯτ ʮΫϥΠΞϯτʯಉ͡ҙຯʁ
ϢϏΩλεݴޠͰ༻ޠΛ౷Ұ ༻ޠͷఆٛΛ໌֬ʹ͢Δ ސ٬ ͓٬༷ Ϗδωε্ͷΫϥΠΞϯτ ΫϥΠΞϯτ αʔόɾΫϥΠΞϯτϞσϧͷ ΫϥΠΞϯτʢٕज़༻ޠʣ • ౷ҰͷޠኮͰཁ݅ɾ༷ΛܾΊΔ
• ౷ҰޠኮͰද͞ΕͨϏδωε্ͷࣝΛϞσϧԽ͢Δ
౷ҰޠኮͰυϝΠϯͷࣝΛද͢ • ̍ͭͷʮސ٬ʯෳͷʮϓϩδΣΫτʯΛ࣋ͭ • ʮϢʔβʯʮϓϩδΣΫτʯ͝ͱ ʮݖݶʯΛมߋ͢Δ͜ͱ͕Ͱ͖Δ ʮϢʔβʯͱʁʮݖݶʯͱʁͳͲ͕ ໌֬ʹͳ͍ͬͯΔͷͰɺ ʮϢʔβʯʹର͢ΔೝࣝͷζϨੜ͡ͳ͘ͳΔ
υϝΠϯͷࣝΛϞσϧԽ 顧客 プロジェクト ϞσϧΛͲ͏දݱ͢Δ͔ʁͦ͜·ͰॏཁͰͳ͍ Ͳ͏͍͏ϞσϧͰ͋Δ͔ʁΛ νʔϜͷதͰڞ༗Ͱ͖͍ͯΔ͜ͱ͕ॏཁ ϞσϧԽͷྫ
υϝΠϯۦಈΛ࣮ݱ͢Δ ΞʔΩςΫνϟ
ΞʔΩςΫνϟͷཁٻ • υϝΠϯϞσϧ͕ओମʹͳΔ͖ – Ϟσϧ͕ಛఆͷ࣮ٕज़ʹґଘ͍͚ͯ͠ͳ͍ • ٕज़తͳؔ৺ࣄυϝΠϯͷؔ৺ࣄͱ ͞Ε͍ͯΔ͖
ҰൠతͳϨΠϠʔԽΞʔΩςΫνϟ Infrastructure Layer UI & Presenta1on Layer Applica1on Layer Domain
Layer
ҰൠతͳϨΠϠʔԽΞʔΩςΫνϟ Infrastructure Layer UI & Presenta1on Layer Applica1on Layer Domain
Layer υϝΠϯ͕ΠϯϑϥετϥΫνϟ ʢ۩ମతͳ࣮ٕज़ʣʹґଘͯ͠͠·͍ͬͯΔ
࠾༻ͨ͠ΞʔΩςΫνϟ Domain Layer Infrastructure Layer UI & Presenta1on Layer Applica1on
Layer
࠾༻ͨ͠ΞʔΩςΫνϟ Domain Layer Infrastructure Layer UI & Presenta1on Layer Applica1on
Layer υϝΠϯΛ࠷ԼҐͷϨΠϠʔ ΠϯϑϥετϥΫνϟͷར༻͕ඞཁͳՕॴ ͦͷΠϯλʔϑΣΠεΛఏڙ
࠾༻ͨ͠ΞʔΩςΫνϟ Domain Layer Infrastructure Layer UI & Presenta1on Layer Applica1on
Layer ΠϯϑϥετϥΫνϟ࠷্ҐͷϨΠϠʔʹ͠ ԼҐϨΠϠʔͷΠϯλʔϑΣΠεΛ࣮
ΞʔΩςΫνϟΛ࣮ݱ͢Δʹ • ηύϨʔτΠϯλʔϑΣΠε ۩ମతͳ࣮Λ༩͑Δඞཁ͕͋Δ • ޙ͔Β࣮Λ༩͑Δखஈ – %FQFOEFODZ*OKFDUJPO %*
– 4FSWJDF-PDBUPS – ͳͲ • ࠓճ%*Ͱ࣮Λఏڙˠ4DBMBͰʁ
4DBMBʹΑΔ੩త%* trait RepositoryRegistry { val fooRepository: Repo } // fooRepositoryΛ͏Ϋϥε
trait BarService { this: RepositoryRegistry => def doSomething = { fooRepository.fetch } } // ࣮Λ࣋ͭτϨΠτ trait RepositoryRegistryImpl { // Repo࣮ val fooRepository = Repo } // ࣮Λಋೖ class BerServiceImpl extends RepositoryRegistryImpl
4DBMBʹΑΔ੩త%* trait RepositoryRegistry { val fooRepository: Repo } // fooRepositoryΛ͏Ϋϥε
trait BarService { this: RepositoryRegistry => def doSomething = { fooRepository.fetch } } // ࣮Λ࣋ͭτϨΠτ trait RepositoryRegistryImpl { // Repo࣮ val fooRepository = Repo } // ࣮Λಋೖ class BerServiceImpl extends RepositoryRegistryImpl ͜ΕͨͩͷΠϯλʔϑΣΠεʢUSBJUʣ
4DBMBʹΑΔ੩త%* trait RepositoryRegistry { val fooRepository: Repo } // fooRepositoryΛ͏Ϋϥε
trait BarService { this: RepositoryRegistry => def doSomething = { fooRepository.fetch } } // ࣮Λ࣋ͭτϨΠτ trait RepositoryRegistryImpl { // Repo࣮ val fooRepository = Repo } // ࣮Λಋೖ class BerServiceImpl extends RepositoryRegistryImpl ࣗܕΞϊςʔγϣϯͰUSBJUͷґଘΛએݴ
4DBMBʹΑΔ੩త%* trait RepositoryRegistry { val fooRepository: Repo } // fooRepositoryΛ͏Ϋϥε
trait BarService { this: RepositoryRegistry => def doSomething = { fooRepository.fetch } } // ࣮Λ࣋ͭτϨΠτ trait RepositoryRegistryImpl { // Repo࣮ val fooRepository = Repo } // ࣮Λಋೖ class BerServiceImpl extends RepositoryRegistryImpl ͜͜Ͱ۩ମతͳ࣮Λ༩͍͑ͯΔ %*
4DBMBʹΑΔ੩త%* trait RepositoryRegistry { val fooRepository: Repo } // fooRepositoryΛ͏Ϋϥε
trait BarService { this: RepositoryRegistry => def doSomething = { fooRepository.fetch } } // ࣮Λ࣋ͭτϨΠτ trait RepositoryRegistryImpl { // Repo࣮ val fooRepository = Repo } // ࣮Λಋೖ class BerServiceImpl extends RepositoryRegistryImpl ࣮Λಋೖ͢Δલͷஈ֊Ͱ ґଘΛએݴͨ͠USBJUͷϝιου͕͑Δ
4DBMBʹΑΔϞσϧͷ࣮
ϞσϧΛઃܭɾ࣮ʹམͱ͢ • υϝΠϯͷ࣮ • υϝΠϯۦಈઃܭʹ͓͍ͯఆٛ͞Εͨಓ۩Λ ͍4DBMBͷίʔυͰදݱ͢Δ • %%%ͷಓ۩ – &OUJUZ
– 7BMVF0CKFDU – 4FSWJDF – 3FQPTJUPSZ – ͳͲ
ྫɿ7BMVF0CKFDUͷ࣮ • 7BMVF0CKFDU – Λදݱ͢ΔΦϒδΣΫτ – ࣗମʹυϝΠϯ্ͷҙຯΛ࣋ͨͤΔ • ྫɿՁ֨ʢ1SJDFʣ –
ʮԁʯʹؚ·ΕΔཁૉʮʯͱʮԁʯ – 1SJDFͷϞσϧ࣍ͷཁૉΛ࣋ͭ • WBMVF • DVSSFODZ+1:
+BWBʹΑΔ1SJDFΫϥε public class Price { public int value; // Ձ֨ͷ
public Currency currency; // ௨՟ Price(int value, Currency currency) { this.value = value; this.currency = currency; } } // PriceΦϒδΣΫτͷੜ new Price(100, new Currency(JPY))
4DBMBʹΑΔ1SJDFΫϥε case class Price(value: Int, currency: Currency) // case class
ʹΑΓ্هͷҰߦͰදݱग़དྷΔ // ͜Ε͚ͩͰ৽͍͠ΦϒδΣΫτΛੜՄೳ Price(100, JPY)
4DBMBʹΑΔ1SJDFΫϥε case class Price(value: Int, currency: Currency) // case class
ʹΑΓ্هͷҰߦͰදݱग़དྷΔ // ͜Ε͚ͩͰ৽͍͠ΦϒδΣΫτΛੜՄೳ Price(100, JPY) ϞσϧԽ͢Δ࣮ίετ͕ͱͯখ͍͞
ܕύϥϝʔλʹΑΔදݱ trait Tax case object IncludingTax extends Tax
// ੫ࠐ case object ExcludingTax extends Tax // ੫ൈ // ܕύϥϝʔλʢδΣωϦοΫʣʹΑͬͯදݱՄೳ // ATaxͷαϒܕ case class Price[A <: Tax](value: Int, currency: Currency) // 100ԁʢ੫ࠐʣͷදݱ Price[IncludingTax](100, JPY)
ܕύϥϝʔλʹΑΔදݱ trait Tax case object IncludingTax extends Tax
// ੫ࠐ case object ExcludingTax extends Tax // ੫ൈ // ܕύϥϝʔλʢδΣωϦοΫʣʹΑͬͯදݱՄೳ // ATaxͷαϒܕ case class Price[A <: Tax](value: Int, currency: Currency) // 100ԁʢ੫ࠐʣͷදݱ Price[IncludingTax](100, JPY) ੫ൈɾ੫ࠐΛܕύϥϝʔλʹΑͬͯදݱ
ܕύϥϝʔλʹΑΔදݱ // ͷՁ֨੫ࠐͰ͋Δ͜ͱ͕ܕͰදݱग़དྷΔ case class Product( name: String,
price: Price[IncludingTax] ) // ͷදݱྫ Product(“ίοϓຊ”, Price[IncludingTax](4968, JPY)) ͜ͷΑ͏ͳܗͰɺϞσϧΛ؆͔ܿͭܕ҆શʹ ίʔυʹམͱ͍ͯ͘͜͠ͱ͕Մೳ
·ͱΊ
4DBMBʹΑΔ%%%Ͳ͏ͳͷʁ • υϝΠϯۦಈઃܭʹ͓͚Δ4DBMBͷ࠾༻ ʢ࣮ίετɾදݱྗͷ؍ͰʣϝϦοτ͕େ͖͍ • ͨͩ͠ɺͲͷϓϩμΫτʹద͍ͯ͠ΔΘ͚Ͱͳ͍ – ྫ͑ɺϓϩτλΠϓతͳϓϩμΫτʹෆ͖ • ϓϩμΫτʹదͨ͠ઃܭख๏ΛऔΕ͍ͯΔ͔͕
࠷ऴతʹॏཁ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠