依存性の注入とは？

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%* 5PNPLJ0UB 1

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ԿΛֶͿ͔ w ґଘੑͷ஫ೖͷ໨తɺ֓ཁ w ૄ݁߹ w %*ͷύλʔϯͱΞϯνύλʔϯ w 40-*%ݪଇ w ΞεϖΫτࢦ޲ϓϩάϥϛϯά w 1VSF%*ͱ%*ίϯςφ 2

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ୈճґଘੑ஫ೖͱ͸ 3

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ୈճΞδΣϯμ wґଘੑͷ஫ೖͱ͸ wґଘੑͷ஫ೖͷޡղ wґଘੑͷ஫ೖʹඞཁͳ஌ࣝ wґଘੑͷ஫ೖͷ໨త wૄ݁߹ 4

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ґଘੑͷ஫ೖʹࣅͨݴ༿ w ґଘੑͷ஫ೖ %FQFOEFODZ*OKFDUJPO w ґଘؔ܎ٯసͷݪଇʢ%FQFOEFODZ*OWFSTJPO w ੍ޚͷ൓స *P$ w αʔυɾύʔςΟ઀ଓ UIJSEQBSUZDPOOFDU w αʔϏεɾϩέʔλ 4FSWJDF-PDBUPS 5

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ґଘੑͷ஫ೖͱ͸ 6 ґଘੑͷ஫ೖ͸ ϕΞϧωʔθιʔε

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ґଘੑͷ஫ೖͱ͸ 7 ϕΞϧωʔθιʔεͱ͸ʁ ཛͱόλʔͷιʔεɻ ΤετϥΰϯɺΤγϟ ϩοτɺηϧϑΟʔ Ϣɺਣ͕ݪࡐྉɻ

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ґଘੑͷ஫ೖͱ͸ 8 ϕΞϧωʔθιʔεͱ͸ʁ ϑϨϯνͰ͸جຊతͳιʔεɻ ్தͰࣦഊͨ͠Β໭ͤͳ͍ɻ࡞ ੒ʹ͕͔͔࣌ؒΔɻ

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ґଘੑͷ஫ೖͱ͸ ༷ʑͳιϑτ΢ΣΞઃܭͷݪଇ΍ύλʔϯΛूΊͨ ΋ͷͰ͋Γɺίʔυ͕ૄ݁߹ MPPTFDPVQMJOH ͱͳ ΔΑ͏ͳ։ൃΛߦ͑ΔΑ͏ʹ͢Δ΋ͷͰ͋Δɻ 9

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ґଘੑͷ஫ೖͱ͸ ࡀࣇWFS ΋͠ɺ܅͕୆ॴʹߦͬͯɺྫྷଂݿ͔Βউखʹ৯΂෺΍ҿΈ෺Λͱ͖ͬͯͨ ΒɺޙͰ໰୊ʹͳΔΑͶʁྫ͑͹ɺྫྷଂݿͷυΞΛดΊ๨ΕͨΓɺϚϚ΍ύ ύ͕܅ʹ৯΂ͯཉ͘͠ͳ͍ͱࢥ͍ͬͯΔ΋ͷΛ৯΂ͯ͠·ͬͨΓ͢Δ͔΋͠ Εͳ͍͠ɺ΋͔ͨ͠͠Βɺ܅͕୳͍ͯ͠Δ΋ͷ͸ͦ΋ͦ΋ྫྷଂݿʹೖ͍ͬͯ ͳ͔ͬͨΓɺ͢Ͱʹ৆ຯظݶ͕͖Ε͍ͯͨΓ͢Δ͜ͱ΋͋Δ͠Ͷɻ͜ͷΑ͏ ͳ৔߹ɺ܅͕΍Δ΂͖͜ͱ͸ϚϚ΍ύύʹ܅͕ԿΛඞཁͱ͍ͯ͠Δͷ͔Λ఻ ͑Δ͜ͱͳΜͩΑɻྫ͑͹ɺʮ͓ன͝൧Λ৯΂Δ͔ΒԿ͔ҿΈ෺Λͱͬͯʯ ͱ͔͞ɻͦ͏͢ΔͱϚϚ΍ύύ͸܅ʹԿ͔Λ͖࣋ͬͯͯ͘ΕΔΜͩΑʯ 10

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ґଘੑͷ஫ೖͱ͸ ࡀࣇWFS αʔϏεΛඞཁͱ͢ΔΫϥε ࡀࣇ ͸ɺඞཁͳαʔϏε Λఏڙ͢ΔΑ͏ʹج൫ ਌ ʹཔΔ΂͖Ͱ͋Δͱ͍͏͜ͱɻ 11

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αʔϏεͱίϯϙʔωϯτ αʔϏεந৅ͷ͜ͱɻͲͷΑ͏ͳαʔϏεΛఏڙ͢Δ͔Λࣔ͢΋ͷ ίϯϙʔωϯτந৅Λ࣮૷ͨ͠Ϋϥε 12

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%*ʹؔ͢Δޡղ • ґଘੑ஫ೖ͸஗ԆόΠϯσΟϯάΛߦ͏࣌ʹ͔͠༻͍ΒΕͳ͍ • ୯ମςετΛ͢Δ࣌ʹ͚ͩؔ܎ͯ͘͠Δ • υʔϐϯάΛͨ͠Abstract FactoryύλʔϯͷΑ͏ͳ΋ͷ • ґଘੑ஫ೖΛಋೖ͢Δʹ͸DIίϯςφ͕ඞཁ 13

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஗ԆόΠϯσΟϯά 14 ίʔυΛ࠶ίϯύΠϧ͢Δ͜ͱͳ͘ɺ ΞϓϦέʔγϣϯͷҰ෦ΛऔΓସ͑ΒΕΔػೳ FH74$PEFͳͲ ஗ԆόΠϯσΟϯάͷͨΊʹ%*Λ͢ΔΘ͚Ͱ͸ͳ͍

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୯ମςετʹؔ͢Δޡղ 15 5%%ͷͨΊ͚ͩʹ%*͢ΔΘ͚Ͱ͸ͳ͍ɻ

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"CTUSBDU'BDUPSZύλʔϯͱ͸ 16 ෳ਺ͷϝιουΛඋ͑ͨந৅Ͱ͋Γɺϝιου͝ͱ ʹಛఆͷछྨͷΦϒδΣΫτ͕ੜ੒Ͱ͖ΔΑ͏ʹ͢ Δ΋ͷɻ

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υʔϐϯάͨ͠"CTUSBDU'BDUPSZύλʔϯͰ͋Δͱ͍͏ޡղ 17 ґଘੑ஫ೖΛ͢Δ͜ͱͰɺଞͷαʔϏε ந৅ Λݟͭ ͚ग़͢ͷ͸ΞϯνύλʔϯɻˠαʔϏεɾϩέʔλʔ

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αʔϏεɾϩέʔλʔ 18 %*ͱ͸શ͘ରۃͳ֓೦

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αʔϏεɾϩέʔλʔ 19 %*͸ɺ໋ྩతͳίʔυͰґଘΛཁٻ͠ͳͯ͘΋ɺͦͷґଘΛ༻͍ͨΦ ϒδΣΫτΛੜ੒Ͱ͖ΔΑ͏ʹ͢Δํ๏ɻґଘΛඞཁͱ͢ΔΫϥεΛ ར༻͢Δίʔυʹରͯ͠ɺͦͷґଘΛఏڙͤ͞ΔΑ͏ʹ͢Δ΋ͷɻ

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%*ίϯςφʹؔ͢Δޡղ 20 %*ίϯςφ͸༷ʑͳΫϥεͷΦϒδΣΫτΛ૊Έ߹ΘͤΔ͜ͱΛ༰қ ʹߦ͑ΔΑ͏ʹ͢Δ೚ҙͷϥΠϒϥϦɻ %*ίϯςφΛ࢖Θͳ͍%*Λ1VSF%*ͱ͍͏ɻ

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%*ʹඞཁͳ஌ࣝ 21 w40-*%ݪଇ wΫϦʔϯίʔυ wΞεϖΫτࢦ޲ϓϩάϥϛϯά

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40-*%ݪଇͱ͸ w 4JOHMF3FTQPOTJCJMJUZ1SJODJQMF w 0QFO$MPTFE1SJODJQMF w -JTLPW4VCTUJUVUJPO1SJODJQMF w *OUFSGBDF4FHSFHBUJPO1SJODJQMF w %FQFOEFODZ*OWFSTJPO1SJODJQMF 22

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%*ͱؔ܎ͷ͋Δͭͷύλʔϯ 23 w%FDPSBUPSύλʔϯ w$PNQPTJUFύλʔϯ w"EBQUFSύλʔϯ w/VMMΦϒδΣΫτ

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ґଘੑͷ஫ೖͷ໨త 24 wอक༰қੑͷ޲্ ˠૄ݁߹ͳઃܭʹ͢Δ

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ΦϒδΣΫτಉ࢜ͷີ݁߹ 25

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ૄ݁߹ 26

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ίϯηϯτͱϓϥά 27 wίϯηϯτΠϯλʔϑΣΠε ந৅ wϓϥάΠϯλʔϑΣΠεͷ࣮૷ ۩ମ

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Ϧείϑͷஔ׵ݪଇ -41 28

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Ϧείϑͷஔ׵ݪଇ -41 29 w4ܕͷΦϒδΣΫτPͷ֤ʑʹɺରԠ͢Δ5ܕͷΦϒδΣΫτ P͕ͭଘࡏ͠ɺ5Λ࢖ͬͯఆٛ͞ΕͨϓϩάϥϜ1ʹରͯ͠ Pͷ୅ΘΓʹPΛ࢖ͬͯ΋1ͷৼΔ෣͍͕มΘΒͳ͍৔߹ɺ 4͸5ͷ೿ੜܕͰ͋Δͱݴ͑ΔɻCZ#BSCBSB-JTLPW w೿ੜܕʹґଘͯ͠͸͍͚ͳ͍ɻ೿ੜܕ͸ɺ೿ੜ΋ͱͷํʹஔ ׵ՄೳͰͶ͚Ε͹ͳΒͳ͍ɻ

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Ϧείϑͷஔ׵ݪଇ -41 30 কདྷʹߟ͑Β͑Δ৽ͨͳཁٻʹରԠ͢ΔͨΊͷݪଇ

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Ϧείϑͷஔ׵ݪଇ -41 31 কདྷʹߟ͑Β͑Δ৽ͨͳཁٻʹରԠ͢ΔͨΊͷݪଇ

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32 ίϯηϯτ͕։͖ͬͺͳͩ͠ͱةͳ͍ ײిͨ͠Γ͢ΔՄೳੑ͕͋Δ

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/VMMΦϒδΣΫτ 33

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/VMMΦϒδΣΫτ 34 αʔϏεΛ࢖͏͜ͱΛ૝ఆ࣮ͨ͠૷ʹ͕ͯͨ͠ɺαʔϏε͕ར༻ Ͱ͖ͳ͍৔߹ɺࢀরઌ͕ͳ͍͜ͱͰ/VMM3FGFSFODF&YDFQUJPOʹ ͋ΔͷΛ๷͙

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/VMMΦϒδΣΫτ 35 αʔϏεΛ࢖͏͜ͱΛ૝ఆ࣮ͨ͠૷ʹ͕ͯͨ͠ɺαʔϏε͕ར༻ Ͱ͖ͳ͍৔߹ɺࢀরઌ͕ͳ͍͜ͱͰ/VMM3FGFSFODF&YDFQUJPOʹ ͋ΔͷΛ๷͙

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36 ΋͠ఀిͨ͠Βɻɻɻɻ

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37 %FDPSBUPSύλʔϯ

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38 %FDPSBUPSύλʔϯ ΠϯλʔϑΣΠεͷ࣮૷Ϋϥεʹରͯ͠ɺಉ͡Πϯ λʔϑΣΠεͷผͷ࣮૷ΫϥεΛհೖ JOUFSDFQUJPO ͤͯ͞৽ͨͳػೳΛՃ͑Δઃܭύλʔϯ

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39 %FDPSBUPSύλʔϯͷ໨త ৽ͨͳػೳ΍ԣஅతؔ৺͝ͱΛطଘͷίʔυΛॻ͖ ׵͑Δ͜ͱͳ͘௥ՃͰ͖ΔΑ͏ʹͳΔ

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40 614ͱίϯϐϡʔλ ͦΕͧΕҟͳΔ໨తΛ࣋ͭ ˠ୯Ұ੹೚ͷݪଇ ˠͦΕͧΕ͕ӨڹΛड͚Δ͜ͱ͕ͳ͍

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41 ͭͷίϯηϯτͰ ෳ਺ͷՈిΛಉ࣌ʹ࢖͍͍ͨ

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42 $PNQPTJUFύλʔϯ

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43 $PNQPTJUFύλʔϯ

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44 $PNQPTJUFύλʔϯ ΠϯλʔϑΣΠεͷطଘͷ࣮૷Ϋϥεʹର ͯ͠ɺผͷ৽ͨͳ࣮૷ΫϥεΛՃ͑Δɻ

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45 ւ֎ʹߦ͘ͱίϯηϯτͱ ϓϥάͷܗ͕Ұக͠ͳ͘ͳΔ

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46 "EBQUFSύλʔϯ

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47 "EBQUFSύλʔϯ ҟͳΔΠϯλʔϑΣΠεͰ΋ɺΞμϓλΛ հͯ͠࢖͏͜ͱ͕Ͱ͖Δɻ

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48 "EBQUFSύλʔϯ ΞϓϦέʔγϣϯ͕ར༻͢ΔΠϯλʔϑΣ ΠεΛհͯ͠طଘͷαʔυύʔςΟ੡ͷ"1* Λར༻͍ͨ͠ͱ͖ʹ༗ޮ

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49 ΦʔϓϯɾΫϩʔζυͷݪଇ 0$1 طଘͷίʔυΛมߋ͢Δ͜ͱͳ͘ɺΞϓϦέ ʔγϣϯΛ֦ுͰ͖ΔΑ͏ʹ͢Δͱ͍͏֓೦

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50 ΦʔϓϯɾΫϩʔζυͷݪଇ 0$1 ֦ுʹରͯ͠͸0QFO มߋʹରͯ͠͸$MPTFE

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51 ૄ݁߹ʹ͢Δίπ ࣮૷ʹରͯ͠ɺϓϩάϥϛϯά͢Δͷ Ͱ͸ͳ͘ɺΠϯλʔϑΣΠεʹରͯ͠ ϓϩάϥϛϯάΛ͢Δ

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52 ·ͱΊ ૄ݁߹͸ɺίϯηϯτͱϓϥάͷΑ͏ʹଟ ͘ͷ࢈Ή w614%FDPSBUFSύλʔϯ wిݯλοϓ$PNQPTJUύλʔϯ wίϯηϯτΧόʔ/VMMPCKFDU wΞμϓλʔ"EBQUFSύλʔϯ wίϯηϯτͱϓϥάϦείϑͷஔ׵ݪଇ w614ͱ1$୯Ұ੹೚ͷݪଇ w֦ு͍ͯ֓͘͠೦ΦʔϓϯɾΫϩʔζυ ͷݪଇ

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53 ·ͱΊ ґଘੑͷ஫ೖͱ͸ɺ༷ʑͳιϑτ΢ΣΞઃܭ ͷݪଇ΍ύλʔϯΛूΊͨ΋ͷͰ͋Γɺίʔ υ͕ૄ݁߹ʹͳΔΑ͏ʹଅ͢ɻͦͯ͠ɺૄ݁ ߹ʹ͢Δ͜ͱͰɺίʔυʹର͢Δอक༰қੑ ͕޲্͢Δɻ