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ϒϨΠΫεϧʔͱ จֶ April 9, 2011 Tadayoshi Sato http://ameblo.jp/ouobpo The Breakthrough and Literature

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Ͱ΋ɺΘ͔͍ͬͯΔͰ͠ΐ͏ɺࢲͨͪ ͷ͍͋ͩʹ໊લ͕͋ͬͯ͸ͳΒͳ͍ͷ Ͱ͢ɻ — Maurice Blanchot, ʰࢲʹ͍ͭͯ͜ͳ͔ͬͨஉʱ

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• ࢓ࣄ - Software AG גࣜձࣾ webMethods ίϯαϧλϯτ - ॻ੶ͷࣥචʗ຋༁ͳͲ • Web - ϒϩά: http://ameblo.jp/ouobpo - Twitter: tadayosi • झຯ - KindleͰಡॻ - ೔ຊϕδλϦΞϯڠձձһ ࠤ౻ ڡ߶ʢ͞ͱ͏ ͨͩΑ͠ʣ http://www.flickr.com/photos/robertnyman/189691155/

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ຊ೔ͷDDDύλʔϯɿ ෗ഊ๷ࢭ૚ʢANTICORRUPTION LAYER ʣ ৽͍͠γεςϜΛߏங͍ͯͯ͠ɺͦΕ͕ଞͷγεςϜͱ઀͢ΔڊେͳΠϯλ ϑΣʔεΛ࣋ͨͳ͚Ε͹ͳΒͳ͍ͱ͍͏৔߹ɺ2ͭͷϞσϧΛؔ܎͚ͮΔ͜ͱ͕ ೉͍͠ͱɺ࠷ऴతʹ͸ͦͷ৽͍͠Ϟσϧͷҙਤ͸׬શʹѹ౗͞Εͯ͠·͍ɺ݁ Ռͱͯ͠ɺ΋͏1ͭͷγεςϜͷϞσϧʹࣅͤΑ͏ͱͦͷ৔͠ͷ͗Ͱमਖ਼ͤ͟Δ Λಘͳ͘ͳΔ͔΋͠Εͳ͍ɻϨΨγʔγεςϜͷϞσϧ͸ශऑͰ͋Δͷ͕ී௨ ͕ͩɺྫ֎తʹ͏·͘։ൃ͞Ε͍ͯͯ΋ɺݱࡏͷϓϩδΣΫτͷཁٻʹ͸߹Θ ͳ͍͔΋͠Εͳ͍ɻͦΕͰ΋ɺ౷߹͢Δ͜ͱʹ͸ଟ͘ͷՁ஋͕ݟग़͞ΕΔ͔΋ ͠Εͳ͍͠ɺͦΕ͕ઈରతͳཁ݅ʹͳ͍ͬͯΔ͜ͱ΋͋Δɻ ͦΕΏ͑ɿ ɹִ཭͢ΔͨΊͷϨΠϠΛ࡞੒͢Δ͜ͱʹΑͬͯɺΫϥΠΞϯτʹରͯ͠ɺಠ ࣗͷυϝΠϯϞσϧͷ༻ޠͰදݱ͞ΕͨػೳΛఏڙ͢Δ͜ͱɻ͜ͷ૚͸ɺطଘ ͷΠϯλϑΣʔεΛ௨ͯ͠ଞͷγεςϜͱ௨৴͢ΔͷͰɺଞͷγεςϜΛमਖ਼͢ Δඞཁ͸΄ͱΜͲͳ͍͔ɺશ͘ͳ͍͜ͱ΋͋Δɻ಺෦తʹ͸ɺ͜ͷϨΠϠ͕ඞ ཁʹԠͯ͡ɺ2ͭͷϞσϧؒͰͷม׵Λ྆ํ޲ʹରͯ͠ߦ͏ɻ ʢEric Evans, ʰΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭʱΑΓʣ

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ࠓ೔ߟ͍͑ͨ͜ͱ υϝΠϯۦಈઃܭͷ ຊ࣭ʹ͍ͭͯ http://www.flickr.com/photos/redisdead/4341418604/

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υϝΠϯۦಈઃܭͱ͸ • υϝΠϯϞσϧΛνʔϜͷڞ௨ݴޠͱ͢Δ • υϝΠϯϞσϧΛ࣮૷ͱৗʹ݁ͼ͚ͭΔ • ܧଓతͳ஌ࣝͷ͔Έࡅ͖ͱϦϑΝΫλϦϯ άʹΑͬͯυϝΠϯϞσϧΛਂΊΔ

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IUUQXXXqJDLSDPNQIPUPTEBMCFSB υϝΠϯϞσϧͱ͸Կ͔ʁ

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ʮυϝΠϯϞσϧͱ͸ಛఆͷਤͰ͸ͳ ͘ɺਤ͕఻͑Α͏ͱ͍ͯ͠Δߟ͑ํͰ͋ Δɻ͜Ε͸υϝΠϯΤΩεύʔτͷ಄ͷ தʹ͋Δ୯ͳΔ஌ࣝͰ͸ͳ͘ɺͦͷ஌ࣝ ͕ݫີʹߏ੒͞Εɺબͼൈ͔Εͯந৅Խ ͞Εͨ΋ͷͳͷͩɻʯʢp. 3ʣ ʢEric Evans, ʰΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭʱΑΓʣ

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Ϟσϧ υΩϡϝϯτ UMLਤ ιʔείʔυ ... ձ࿩ ʢ಄ͷதʣ ༷ʑͳϏϡʔ Ϟσϧ͸಄ͷதʹ͋Δ ։ൃऀͱΤΩεύʔτ

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ΑΓਂ͍ಎ࡯΁޲͔͏ ϦϑΝΫλϦϯά • ࠷ॳ͔Β֩৺Λಥ͍ͨϞσϧΛಘΔ͜ ͱ͸Ͱ͖ͳ͍ • ஌ࣝͷ͔Έࡅ͖ɺܧଓతֶशʹΑΓϞ σϧΛચ࿅ͤ͞ଓ͚Δ͔͠ͳ͍

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ʮ஌ࣝͷ͔Έࡅ͖͸୳ٻ͔ͩΒɺ࠷ऴతʹͲ ͜΁ߦ͖ண͔͘͸Θ͔Βͳ͍ͷͩɻʯʢp. 3ʣ ʮϞσϦϯά͸ଞͷ୳ڀͱಉ͡Α͏ʹɺຊ࣭ తʹߏ଄Խ͞Ε͍ͯͳ͍ͷͩɻΑΓਂ͍ಎ࡯ ΁޲͔͏ϦϑΝΫλϦϯά͸ɺֶशͱਂ͍ࢥ ߟ͕ಋ͘ॴͰ͋Ε͹ɺͲ͜΁Ͱ΋ै͍͔ͬͯ Ͷ͹ͳΒͳ͍ɻʯʢp. 191ʣ ʢEric Evans, ʰΤϦοΫɾΤϰΝϯεͷυϝΠϯۦಈઃܭʱΑΓʣ

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ϒϨΠΫεϧʔ Breakthrough IUUQXXXqJDLSDPNQIPUPTXPMGHBOHTUBVEU

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ਂ͍ϞσϧΛݟग़͢ॠؒ ʢEric Evans, Domain-Driven Design ΑΓʣ

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ϒϨΠΫεϧʔ͸ग़དྷࣄͰ͋Δ • ςΫχοΫͰ͸ͳ͍ • ͍ͭ๚ΕΔ͔͸෼͔Βͳ͍ • ͨͩ౸དྷΛ४උ͢ΔͷΈ - ஌ࣝͷ͔Έࡅ͖ͱϞσϧͷϦϑΝΫλϦϯά - ͠ͳ΍͔ͳઃܭ

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ͦͷϞσϧ͸ຊ౰ʹ ֩৺ͷϞσϧͳͷ͔ʁ IUUQXXXqJDLSDPNQIPUPTUIFEKVEKVCFBTU

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υϝΠϯۦಈઃܭͷຊ࣭ • υϝΠϯϞσϧͱ͸ৗʹ౸ୡෆՄ ೳͳෆࡏͷத৺ • ͦͷෆࡏͷத৺΁ͱ޲͔͏ӡಈ͜ ͕ͦυϝΠϯۦಈઃܭ

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ɹͨͱ͑அยతͳॻ෺Ͱ͋ͬͯ΋ɺॻ෺ͱ͍͏΋ͷ ͸ɺͦΕΛҾ͖دͤΔͻͱͭͷத৺Λ͍࣋ͬͯΔɻ ͦΕ͸ݻఆͨ͠த৺Ͱ͸ͳ͘ɺͦͷॻ෺ͷѹྗ΍ɺ ͦͷߏ੒ͷ࣋ͭछʑͷঢ়گʹΑͬͯɺҠಈ͢Δɻ· ͨͦΕ͸ɺݻఆͨ͠த৺Ͱ΋͋ΔɻͦΕ͕ਅͷத৺ ͳΒɺͦΕ͸ɺͭͶʹಉҰͰ͋Γͭͭɺ·͢·͢த ৺తͳɺ͔͘Εͨɺෆ࣮֬ͳɺ൱Ԡͳ͍΋ͷʹͳΓ ͭͭҠಈ͢Δͷͩɻॻ෺Λॻ͘ਓ͸ɺ͜ͷத৺΁ͷ ཉٻͱແ஌ʹΑͬͯॻ͍͍ͯΔɻ͜ͷத৺ʹ৮Εͨ ͱײͣΔͷ͸ɺ͜Εʹୡͨ͠ͱ͍͏ࡨ֮Ͱ͔͋͠Γ ͑·͍ɻ ʢMaurice Blanchot, ʰจֶۭؒʱΑΓʣ

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ϞʔϦεɾϒϥϯγϣ ʢ1907 - 2003ʣ • 20ੈل࠷େͷจֶ൷ධՈɾখઆՈʢϑϥϯεʣ - ʰจֶۭؒʱʰདྷΔ΂͖ॻ෺ʱʰṖͷஉτϚʱ • 20ੈل·ͰͷจֶΛ·ͱΊ্͛ͨ - ࡞Ո͸ɺ౸ୡෆՄೳͳத৺ͱͯ͠ͷ࡞඼Λ௥ڀ͢Δ - ࡞඼Λ׬੒͢Δͱ࡞Ո͸ࢮʹɺ࡞඼͸ʮจֶۭؒʯ ʹଘࡏ͠ଓ͚Δ

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• ݴ༿ ʹ ه߸ - γχϑΟΞϯʢه߸ͷ࣮ମʣ - γχϑΟΤʢه߸͕ࢦࣔ͢͠΋ͷʣ • ݴ༿͸ͦͷγχϑΟΤΛຣফ͢Δ ݴ༿ͷྗ

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ࢮͷܦݧ • ࢮ ʹ ෆՄೳʢܦݧͰ͖ͳ͍ʣ - ਓؒ͸ɺࢮʹͭͭ͋Δ͜ͱ͔͠Ͱ͖ͳ͍ - ܦݧͰ͖Δͷ͸ɺৗʹʮଞऀͷࢮʯ

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จֶͱ͸ • ࡞Ո͸࡞඼Λॻ͖ଓ͚Δ͕ɺ࡞඼͕׬੒͢Δ ͱ࡞඼͸࡞Ո͔Β੾Γ཭͞ΕΔ - ݴ༿ͷྗɺࢮͷܦݧ - ΦϧϑΣ΢εͷ஫ࢹɺηΠϨʔϯͷ੠ • ࡞඼͸จֶۭؒʹଘࡏ͠ଓ͚Δ - ʮऴΘΓͳ͖΋ͷࢭ·͟Δ΋ͷʯ • ຊ࣭తݽಠɺኲኾ

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εςϑΝψɾϚϥϧϝ ʢ1842 - 1898ʣ • ϑϥϯεͷ৅௃೿ࢻਓ - ʰᱤࢠҰᎸʱ • ׬શͳΔʮ࡞඼ʯ - ʮ͋Δ७ਮͳ࡞඼ͷڪ Δ΂͖ϰΟδϣϯʯ

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ϑϥϯπɾΧϑΧ ʢ1883 - 1924ʣ • νΣίͷ࣮ଘओٛখઆՈ - ʰม਎ʱ • Ұਓশʢࢲʣ→ࡾਓশʢ൴ʣ - ʮྌࢣάϥοΫεʯ

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ΤϦοΫɾΤϰΝϯε ʢ19?? - ݱࡏʣ • ΞϝϦΧͷγεςϜΤϯδχΞ - ʰΤϦοΫɾΤϰΝϯεͷ υϝΠϯۦಈઃܭʱ • ֩৺Λಥ͍ͨυϝΠϯϞσϧ Λ௥ڀ͢Διϑτ΢ΣΞઃܭ ࢥ૝Λఏএ IUUQXXXEPNBJOMBOHVBHFDPN

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DDD͸Ͳ͜΁޲͔͏ͷ͔ • DDDͷ࣮ફʹ࡞Ոͱͯ͠ͷ֮ޛ͸ඞཁͳͷ͔ - ຊ࣭తݽಠɺኲኾ • اۀͷӦར׆ಈͱຊ࣭ͷ௥ڀʹͲ͏ંΓ߹͍ Λ͚ͭΔ͔ - ͨͩ͠ɺจֶ΋Ӧར׆ಈ • ࡞඼ͱͯ͠ͷυϝΠϯϞσϧ͸ొ৔͢Δ͔ - TimeAndMoney

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͝ਗ਼ௌ ͋Γ͕ͱ͏͍͟͝·ͨ͠