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
普段使いのDDD
Search
haljik
June 24, 2017
Programming
21
9.1k
普段使いのDDD
#KanJavaPartyA2
haljik
June 24, 2017
Tweet
Share
More Decks by haljik
See All by haljik
develop-with-domain-expert
haljik
1
1.1k
ドメイン駆動設計の紹介
haljik
0
97
Isolating-the-domainの紹介
haljik
3
1.7k
実録Spring MVC
haljik
10
4.8k
ドメイン駆動設計を軽快に実践するための工夫
haljik
22
7.5k
Other Decks in Programming
See All in Programming
知識0からカンファレンスやってみたらこうなった!
syossan27
5
320
Babylon.js 8.0のアプデ情報を 軽率にキャッチアップ / catch-up-babylonjs-8
drumath2237
0
110
イベントソーシングとAIの親和性ー物語とLLMに理解できるデータ
tomohisa
1
160
抽象データ型について学んだ
ryounasso
0
200
TSConfigからTypeScriptの世界を覗く
planck16
2
1.3k
What Spring Developers Should Know About Jakarta EE
ivargrimstad
1
550
MLOps Japan 勉強会 #52 - 特徴量を言語を越えて一貫して管理する, 『特徴量ドリブン』な MLOps の実現への試み
taniiicom
2
530
TypeScript製IaCツールのAWS CDKが様々な言語で実装できる理由 ~他言語変換の仕組み~ / cdk-language-transformation
gotok365
7
370
TypeScript Language Service Plugin で CSS Modules の開発体験を改善する
mizdra
PRO
3
2.3k
コンポーネントライブラリで実現する、アクセシビリティの正しい実装パターン
schktjm
1
630
AIコーディングの本質は“コード“ではなく“構造“だった / The essence of AI coding is not “code” but "structure
seike460
PRO
2
730
推論された型の移植性エラーTS2742に挑む
teamlab
PRO
0
150
Featured
See All Featured
Let's Do A Bunch of Simple Stuff to Make Websites Faster
chriscoyier
507
140k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.6k
Building Better People: How to give real-time feedback that sticks.
wjessup
368
19k
The Psychology of Web Performance [Beyond Tellerrand 2023]
tammyeverts
47
2.8k
Music & Morning Musume
bryan
47
6.5k
A Tale of Four Properties
chriscoyier
159
23k
Why You Should Never Use an ORM
jnunemaker
PRO
56
9.4k
Documentation Writing (for coders)
carmenintech
71
4.8k
The Power of CSS Pseudo Elements
geoffreycrofte
76
5.8k
Designing for humans not robots
tammielis
253
25k
Testing 201, or: Great Expectations
jmmastey
42
7.5k
What's in a price? How to price your products and services
michaelherold
245
12k
Transcript
ීஈ͍ͷ%%% ,"/+"7"1"35: !IBMKJL
ࣗݾհ w 5XJUUFS!IBMKJL w ໊લɿՏ্࢘ʢ͔Θ͔Έ͍ͤ͡ʣ w ϑϦʔϥϯεͷ+BWBϓϩάϥϚ w ؔ%%%KBWBओ࠵
͜ͷࢿྉʹ͍ͭͯ w ࢲ͕ৗࠒ͔ΒυϝΠϯۦಈઃܭʹ͍ͭͯߟ͍͑ͯ ΔࣄΛݴޠԽͨ͠ͷͰɺͦΕҎ্ͷͷͰ͋Γ ·ͤΜ w +BWB͕લఏͰ͋Γ·͕͋͢·Γ+BWBͷ͠· ͤΜ w ΦϒδΣΫτࢦͰ͢
w ϚΠΫϩαʔϏεͱ͔$234ͱ͔ͷ͋Γ·ͤΜ
ࠓ͢ࣄ w υϝΠϯۦಈઃܭ͕ඪͱ͍ͯ͠Δ͜ͱ w υϝΠϯۦಈઃܭ͕લఏͱ͍ͯ͠Δ͜ͱ w ʮυϝΠϯͰۦಈ͢Δʯͱ͍͏͜ͱͷ࣮ࡍ w νʔϜͰڞ༗͓ͯ͘͜͠ͱ w
࣮ࡍʹײͨ͡ޮՌ w ʮීஈ͍ʯͱ͍͏͜ͱ
υϝΠϯۦಈઃܭ͕ඪ ͱ͍ͯ͠Δ͜ͱ
ॊೈͰ֦ுੑʹΜͩ ιϑτΣΞ
मਖ਼֦ு͕ࠔʹͳͬͯ ͠·ͬͨ߹ࣦഊ
Ͳ͏ͳ͍ͬͯΕྑ͍͔ʁ ར༻ऀ͕ʮ͜͜ʯΛʮ͜͏ʯ͍ͨ͠ͱ͍ ͏ཁʹରͯ͠ɺʮ͜͜ʯΛʮ͜͏ʯ͢ Δ͚ͩͰมߋͰ͖ΔΑ͏ʹͳ͍ͬͯΕ ྑͦ͞͏
υϝΠϯۦಈઃܭ͕લఏ ͱ͍ͯ͠Δͷ
։ൃνʔϜ͕ར༻ऀͷ׆ಈʹؔ͢Δ ࣝମܥΛഎෛ͍ࠐΉ͜ͱ w ୯ͳΔࣝͰͳ͘ମܥ CPEZPGLOPXMFEHF˞ w ͨͩΔ͚ͩͰͳ͘എෛࠐΉ CSJOHUPCFBS˞ ˞&SJD&WBOT
%PNBJO%SJWFO%FTJHO "EEJTPO8FTMFZ1SPGFTTJPOBM൛ ୈ̍෦ͷং൫
ۀ͠ͳ͍ w ੳɾઃܭऀͱϓϩάϥϚΛ͚ͳ͍ ༁ͤͣؔ৺ࣄͱϓϩάϥϜͷ୯ҐΛҰகͤ͞Δ w Ϟσϧͷ࡞ऀͱϞσϧͷར༻ऀΛ͚ͳ͍ ϞσϧͱͦΕΛར༻͢ΔଆͷίʔυɺϞσϧʹ৽ ͨͳ͕ࣝΓࠐ·ΕΔʹมߋ͞ΕΔ
ΠςϨʔςΟϒͳϓϩηε w Ϟσϧ։ൃऀͷࣝͱͱʹ͢Δ w ͪΐͬͱ໊ͨ͠લมߋͰ͢ΒϞσϧΛར༻͢Δଆͷ ίʔυʹٴ͢Δ w ϓϩάϥϛϯάͷϓϥοτϑΥʔϜʹΑΔ੍ͷΑ ͏ͳͷવϞσϧʹϑΟʔυόοΫ͕͔͔Δ w
ͦ͏Ͱͳ͍ͱ࣮༻ੑͷͳ͍ϞσϧʹͳΔ
ʮυϝΠϯͰۦಈ͢Δʯ ͱ͍͏͜ͱͷ࣮ࡍ
ར༻ऀͷؔ৺ࣄυϝΠϯ
ར༻ऀͷ͍͏ʮ͜͜ʯΛ͜͏ ͍ͨ͠ͷʮ͜͜ʯ͕ίʔυ ্ͷͲ͜Λࢦ͢ͷ͔ʁ
ར༻ऀͷؔ৺ࣄͱҧ͏୯ҐͰ ϓϩάϥϛϯάͯ͠͠·͏ͱม ߋͷӨڹൣғ༧Ͱ͖ͳ͍
ڞ௨Խͱ͔
աͳநԽͱ͔
ٕज़ۦಈͱ͔
ը໘ۦಈͱ͔
͍Ζ͍Ζ͋Δ͚Ͳ ༧֎ͷӨڹ༧֎ͷί ετʹͳΓൃలΛ્͢Δ
͔ͩΒ
ར༻ऀͷؔ৺ࣄʹϓϩάϥϛϯάͷجຊ ୯ҐΛ͋ΘͤΔ ؔ৺ࣄͷ୯ҐͰஅɺՃϩδοΫΛ࣋ ͪɺͦΕΒͷϩδοΫʹۦಈ͞ΕΔιϑ τΣΞʹ͢Δ
υϝΠϯϞσϧʹۦಈ͞Ε ΔΞϓϦέʔγϣϯΛ࡞Δ
υϝΠϯϞσϧͰۦಈ͞ΕΔ ΞϓϦέʔγϣϯΛ࡞Δʹ υϝΠϯϞσϧ͕࣋ͭஅɺՃϩδοΫʹରͯ͋͠ ΒΏΔͱ͜Ζ͔ΒΞΫηεͰ͖ΔΑ͏ͳΞʔΩςΫνϟ Λ࠾༻͠ɺυϝΠϯϞσϧʹஅɺՃϩδοΫΛू ΊΔඞཁ͕͋Δ
νʔϜͰڞ༗͓ͯ͘͜͠ͱ
w ڥք͚ͮΒΕͨίϯςΩετ w ίϯςΩετͷ֓ཁϞσϦϯά w ϓϩάϥϛϯά্ͷݪଇ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ڥք͚ΒΕͨίϯςΩετ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ڥք͚ͮΒΕͨίϯςΩετ w ίϯςΩετʹࢹ࠲ ݻ༗໊ࢺҎ֎·ͣࢹ࠲Λ֫ಘ͠ͳ͍ͱ໊લ͕ܾ·Βͳ͍ w ࢹ࠲ͱγεςϜར༻ऀͱར༻తͷʮΈ߹Θͤʯ ྫʣస৬αΠτɿʮاۀ͕ࣗࣾʹ͋ͬͨࣾһΛ୳͢ҝʯʮٻ৬ ऀ͕ࣗʹ͋ͬͨస৬ઌاۀΛ୳͢ҝʯͳͲͳͲ w ࢹ࠲͝ͱʹϞσϦϯάͷ໊લۭؒΛ͚ͯɺͦͷࢹ࠲͔ΒΈͨ
Ϟσϧͷಋग़ʹूத͢ΔʹίϯςΩετʹಛԽ͢Δ ྫʣస৬αΠτɿʮاۀʯͱʮٻ৬ऀʯͱ͍͏໊લۭؒʹ͚ Δ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ࢹ࠲ͰࣝΛཧ ࢹ࠲͕ίϯςΩετʹͳΔ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ࢹ࠲ͷݟ͚ͭํ w ࡞Ζ͏ͱ͍ͯ͠ΔαʔϏεγεςϜͷར༻ऀΛચ ͍ग़͢ ਓͷׂͩͬͨΓγεςϜͩͬͨΓ͢Δ w ͦΕͧΕͷར༻ऀ͕ԿΛతʹͦͷγεςϜΛ͏ ͷ͔Λ໌֬ʹ͢Δ w
త͕ҧ͏ͳΒผͷࢹ࠲ w త͕ಉ͡ͳΒಉ͡ࢹ࠲ʢ͔ʣ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ίϯςΩετͷ֓ཁϞσϦϯά νʔϜͰڞ༗͓ͯ͘͜͠ͱ
w ਓɺɺࣄੳ w ࣌ܥྻੳ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ਓɾɾࣄੳ ਓٻ৬ऀɺձһɺاۀͷ୲ऀ ٻਓɺاۀ ࣄݕࡧɺԠืɺεΧτ ྫɿٻਓαΠτͷٻ৬ऀΛࢹ࠲ʹͨ͠߹ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
࣌ܥྻੳ ٻ৬ऀɺاۀ͕ಠཱͯ͠·ͣ͋Δ ٻ৬ऀ͕ձһొΛ͓͜ͳ͍ձһʹͳΔ اۀ͕ٻਓΛొ͢Δ اۀ͕ٻਓΛఴͨ͠εΧτΛձһʹૹΔ
ձһاۀ͔ΒεΧτΛड͚ͱΔ ձһεΧτʹԠื͢Δ ͳͲಠཱͯ͋͠ΔਓΛ·ͣฒͦΕΒ͕ى͜͢ओཁͳΠϕϯτΛ࣌ܥྻʹฒΔ ྫɿٻਓαΠτͷٻ৬ऀΛࢹ࠲ʹͨ͠߹ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ϞσϧԽͨ͠ͷ ਓɺɺࣄੳͰग़ͨཁૉΛ࣌ ܥྻੳͰ͚ؔ͠ɺґଘͷ ํΛܾΊͨঢ়ଶ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ϞσϧΛίʔυͰ ͜ͷϨϕϧͰϞσϧͷτοϓϨϕϧύοέʔδ ͷߏͰදݱ͢Δ EPNBJONPEFM DBOEJEBUF ٻ৬ऀ DPNQBOZ اۀ
P⒎FS ٻਓ NFNCFS ձһ TDPVU εΧτ BQQMJDBUJPO Ԡื ύοέʔδؒͷґଘํͦͷ··෦ͷΦϒδΣ Ϋτ͕ύοέʔδΛލ͙ࡍͷґଘํʹ͢Δ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ϙΠϯτ w ࢹ࠲Λ֫ಘ͢Δ͜ͱͰɺͦͷࢹ࠲͔ΒΈͯෆཁͳ ͷΛ͗མͱ͠ɺॏཁͳͷΛڧௐ͢Δ w ࣌ܥྻͰચ͍ग़͢ґଘͷํॏཁͳͷ ͋ΔλΠϛϯάͰଘࡏ͠ͳ͍ͷࢀরͰ͖ͳ͍ͷ Ͱ͜ΕΛ่͢ͱ࣋ͬͯΔ͔͍࣋ͬͯͳ͍͔ͱ͍͏ঢ় ଶ͕૿͑ͯෳࡶ͕Ճ
νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ϓϩάϥϛϯά্ͷݪଇ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ϓϩάϥϛϯά্ͷݪଇ w ΞʔΩςΫνϟ w ϦϑΝΫλϦϯά w υϝΠϯΦϒδΣΫτͷίʔυ w Ϟσϧͷࣗಈςετ w
+BWBͷجຊతͳ͜ͱ w ΦϒδΣΫτࢦ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ΞʔΩςΫνϟ ̏ʴυϝΠϯϞσϧ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
̏ υϝΠϯϞσϧ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
w υϝΠϯʹଞͷ͕̏ґଘ͍ͯ͠Δҙຯ υϝΠϯ͕શͯΛ੍ޚ͢Δҝ υϝΠϯʹϩδοΫΛूΊΔҝ w ϓϨθϯςʔγϣϯ ը໘ભҠΞϓϦέʔγϣϯͷݺͼग़͠ʹప͢Δ w ΞϓϦέʔγϣϯ υϝΠϯΦϒδΣΫτͷૢ࡞ͱ
ΠϯϑϥετϥΫνϟͷݺͼग़͠ʹప͢Δ w ΠϯϑϥετϥΫνϟ υϝΠϯͰఆٛ͞ΕΔϦϙδτϦΠϯλʔϑΣʔεͷ࣮Λஔ͘ 3%#,74ͷૢ࡞ɺଞ"1*ͷݺͼग़͠ͳͲɺར༻ऀͷؔ৺ࣄΑΓ நͷ͍ͷΛஔ͘ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
w ಉ࢜ͷґଘؔ ্͔ΒԼʹର͢Δݺͼग़͠0, Լ͔Β্ʹର͢Δݺͼग़͠/( w υϝΠϯͷू୯ҐͰϦϙδτϦΛ࡞Δ w ϦϙδτϦΛܦ༝͠ͳ͍ͰଞͷूΛऔಘ͠ͳ͍ w ϦϙδτϦ͔ΒϦϙδτϦͷݺͼग़͠ɺυϝΠ
ϯͷτοϓϨϕϧύοέʔδͷґଘؔΛकΔ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ϦϑΝΫλϦϯά νʔϜͰڞ༗͓ͯ͘͜͠ͱ
w ৗʹϦϑΝΫλϦϯά͢Δ w ϘʔΠεΧτϧʔϧ खΛೖΕΔ࣌ʮདྷͨ࣌ΑΓඒ͘͠ʯ w ʮ͍ࠐΜͩάϩʔϒʯ &SJD&WBOTΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭ ୈ෦ਂ͍Ϟσϧ͠ͳ͔ͳઃܭ
ϦϑΝΫλϦϯάʹΑΓྑ͘มߋ͞ΕΔॴ͕ࣗવͱॊೈͳߏʹͳΔ w ӅΕ͍ͯΔ֓೦Λ୳͢ &SJD&WBOTΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭ ষ҉తͳ֓೦Λ໌ࣔతʹ͢Δ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
υϝΠϯΦϒδΣΫτͷίʔυ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
HFUUFS w ΦϒδΣΫτʹࣄΛͤ͞ΔͨΊʹɺॻ͔ͳ͍ w ෦ϑΟʔϧυͷ͕ݟͨ͘ͳͬͨΒɺͦͷʮϑΟʔ ϧυΛ͏ϩδοΫΛͦͷΦϒδΣΫτࣗʹ࣋ ͨͤΒΕͳ͍͔ʯΛߟ͑Δ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ίϯετϥΫλ w جຊతʹؔ৺ࣄͷ֎ͳͷͰԼʹ͍Δ w ΦϒδΣΫτͷओϑΟʔϧυͱɺͦΕΛͬͯ ՃɺஅΛߦ͏ϩδοΫΛ࣋ͭϝιου w ҙਤͷද໌ϑΝΫτϦϝιουͰ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ࣗಈςετ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
Ϟσϧͷࣗಈςετ w ࠷ॳʹܕͷੈքͰղܾͰ͖ͳ͍͔Λߟ͑Δ w ࣍ʹߏͰղܾͰ͖ͳ͍͔Λߟ͑Δ w Ͳ͏͠Α͏ͳ͍߹ςετΛॻ͘ جຊతʹॻ͔ͳ͍ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
+BWBͷجຊతͳࣄ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
DDD@F;ͭ͏ͷ+BWBίʔσΟϯάͰݕࡧ JSPG͞ΜͷࢿྉΛݟ͍ͯͩ͘͞ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ΦϒδΣΫτࢦ νʔϜͰڞ༗͓ͯ͘͜͠ͱ
͜Μͳຊ͕݄ʹ ग़·͢ɻ ಡॻձ͍ͨ͠ IUUQHJIZPKQCPPL νʔϜͰڞ༗͓ͯ͘͜͠ͱ
ීஈ͍ͷҙຯ
w গͳ͘ͱࢲීஈ͔Β͍ͬͯͳ͍͜ͱΛෳࡶͳ ͷΛݟ͚ͭͨͱ͖͚ͩʹग़དྷΔͱࢥ͑ͳ͍ w খͯ͘͞୯७ͳ։ൃͰࣝͷ֬ೝɾੳɾϓϩά ϥϛϯάͷαΠΫϧΛීஈ͔ΒԿճ͢ w ͍ͭͰͲΜͳ࣌ͰͰ͖ΔΑ͏ʹجຊΛ܁Γฦ͠ ͯ࠷࣭Λఈ্͓͛ͯ͘͠