ふんわりとDDD実践してみた

by tenmihi

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;ΜΘΓͱDDD࣮ફͯ͠Έͨ Fukuoka Perl Workshop #28 - tenmihi

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ࣗݾ঺հ • tenmihi (ͯΜΈͻ) • גࣜձࣾϞόΠϧϑΝΫτϦʔ • Perl, JS • 2018೥9݄͔Β௕࡚Ͱ  ϑϧϦϞʔτͯ͠·͢

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͓࿩͢Δ͜ͱ • ࠷ۙDDDΛ࣮ફͨ͠ͷͰͦΕʹ͍͓ͭͯ࿩Λ • ઓུతͳͱ͜Ζ͸ίϯςΩετਂ͗͢ΔͷͰ υϝΠϯϞσϧͷߏஙʹؔͯ͠ͷΈ৮Ε·͢

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΄ͱΜͲPerlཁૉ͋Γ·ͤΜ

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ࣗ෼ͷόοΫάϥ΢ϯυ • ࠓ·ͰαʔϏεͷӡ༻ΛόϦόϦ΍ͬͯͨ • େ͖ΊͷઃܭʹͪΌΜͱ޲͖߹ͬͨͷ͸  ࠓճ͕ॳΊͯ

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ͲΜͳϓϩδΣΫτ • طଘαʔϏεͷ؅ཧը໘ • ࣾ಺Ͱ࢖͏΋ͷͰެ։͢Δ΋ͷͰ͸ͳ͍ • ӡ༻ʹؔ͢Δಛఆͷۀ຿ϑϩʔΛࢧԉ͢Δ • 8ׂ΄Ͳ։ൃ͕ऴΘͬͯগ͠ͷظؒܦ͍ͬͯͨ

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࢒Γ2ׂͷ։ൃΛߟ͕͑ͨ • ͕࣌ܦͪӡ༻νʔϜͷϝϯόʔ΋มΘͬͯ  ۀ຿ϑϩʔ΋มΘͬͨ • ։ൃ్தͷ੒Ռ෺͸৽͍͠ۀ຿ϑϩʔʹ  ߹Θͳ͘ͳ͍ͬͯͨ

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ཁ݅ͷ֬ೝɾઃܭʹ  ཱͪ໭ͬͯ։ൃ͠௚͢͜ͱʹ

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DDDΛ࠾༻ͨ͠ཧ༝ • ઃܭख๏ͷதͰ͸ϝδϟʔͰྑͦ͞͏ͱ͍͏ओ؍ • ΋ͱ΋ͱ͕DDDʹ͍ۙख๏Ͱઃܭ͞Ε͍ͯͨͨΊ • ࣾ಺Ͱ΋DDDͷ࣮ફྫ͕গͳ͘ɺ࣮ફͷྑ͍ػձ  ͩͱߟ͑ͨͨΊ

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࣮ફͨ͠಺༰

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υϝΠϯϞσϧͷߏஙखॱ 1. ۀ຿ϑϩʔͷ֬ೝ 2. ۀ຿ͷؔ৺ࣄʹ͍ͭͯௐ΂Δ 3. νʔϜ಺ͰυϝΠϯϞσϧͷਫ਼ࠪ

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ۀ຿ϑϩʔͷ֬ೝ • σΟϨΫλʔͱҰॹʹۀ຿ϑϩʔΛ֬ೝ • Ҏલͷ࣮૷΋֬ೝͭͭ͠ۀ຿ϑϩʔͷมԽ΋೺Ѳ

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ۀ຿ͷؔ৺ࣄʹ͍ͭͯௐ΂Δ • ର৅ͱͳΔαʔϏεͷTableΛ΋ͱʹચ͍ग़͠ • ͍͘Β͔࣮૷ࡁΈͩͬͨ͜ͱ΋͋Γɺ  ઌʹܰ͘ϞσϧΛॻ͍ͯUMLͰు͖ग़ͨ͠

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ۀ຿ͷؔ৺ࣄʹ͍ͭͯௐ΂Δ package Fugafuga; use Mouse; has name_en => ( isa => Str ); has timestamp => ( isa => Int ); has item => ( isa => PiyoPiyo ); package Piyopiyo; use Mouse; has title => ( isa => Str ); has description => ( isa => Str );

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νʔϜ಺ͰυϝΠϯϞσϧͷਫ਼ࠪ • ༻ޠදΛݩʹϢϏΩλεݴޠΛɺ  ੜ੒ͨ͠UMLΛݩʹϞσϧͷؔ܎Λ֬ೝͨ͠ • νʔϜϝϯόʔ୭Ͱ΋ݟΕΔ&ߋ৽Ͱ͖Δ  ͱ͜ΖʹυΩϡϝϯτΛஔ͍ͨ

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νʔϜ಺ͰυϝΠϯϞσϧͷਫ਼ࠪ

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ײͨ͜͡ͱ

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ίʔυ্Ͱͷදݱ΋ܾΊͨ͜ͱͰ  ࣮૷্Ͱ΋දݱͷϒϨΛͳͤͨ͘ • ࣮αʔϏεͷ࣮૷Ͱͷݺͼํͱࠞͬͯ͟  ᐆດʹͳΓͦ͏ͩͬͨͷͰΑ͔ͬͨ • ͨͩɺͲ͏ͯ͠΋ҧ࿨ײ͋ΔදݱʹͳΔ΋ ͷ΋͋Γ೰Μͩ

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ϞσϧΛϒϥογϡΞοϓ͠΍͍͢  ؀ڥΛ࡞Δͷ͸ॏཁ ߋ৽͢ΔͷΊΜͲ͍͘͞ͱ͙͢͞·  υΩϡϝϯτ͕ݹ͘ͳͬͯᴥᴪ͕ੜ͡Δ

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ڞ௨ͷݴޠΛܾΊͯ  νʔϜͰ༻͍Δ͚ͩͰ΋༗ӹ DDD͡Όͳ͘ͱ΋ڞ௨ͷݴޠΛ༻͍ͯ  ઃܭ͢Δ͜ͱ͕ઃܭख๏ͷΤοηϯεͱͯ͠  ෯޿͘༗༻ͦ͏