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クラスビルダの話とMongoDB.pm
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mackee
May 17, 2013
Programming
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クラスビルダの話とMongoDB.pm
mackee
May 17, 2013
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Transcript
PerlͷΫϥεϏϧμʔͷϞδϡʔϧͱ MongoDBͷ @mackee_w Ϛίϐοϐ 135݄30༵
PerlͰΫϥεΛ࡞Δ Ϟδϡʔϧແ͠ͰΫϥεΛ࡞Δʹ package Sheep { sub new { my $class
= shift; my $self = { color => “white” }; return bless $self, $class; } } ৄ͘͠perldocͷperlbootͱ͔ 135݄30༵
ͰΊΜͲ͍͘͞Μʁ ΞτϦϏϡʔτʹΞΫηε͢Δͷʹ$self->{color} ͱ͔Μͳ͍ͱ͍͚ͳ͍͠ɺsubͰ͘ΔͷΊΜ Ͳ͍͘͞Μʁ 135݄30༵
ͦ͜ͰΫϥεϏϧμʔ ͦΕͬΆ͍ײ͡ͰΦϒδΣΫτΛ࡞ΕΔ Class::Accessor::Liteͩͱ͜Μͳײ͡ package Sheep { use Class::Accessor::Lite ( new
=> 1, rw => qw/color/, ); } 135݄30༵
Class::Accessorܥ جຊతʹϓϩύςΟ/ΞΫηαΛউखʹΑ͠ͳʹ ͬͯ͘ΕΔ͚ͩͰɺଞͷݴޠ͕ࡌ͍ͯ͠ΔΑ ͏ͳศརػೳ(abstractͱ͔traitͱ͔privateϓϩύ ςΟͱ͔)ͳ͍ 135݄30༵
͍Ζ͍Ζ͋Δͧ Class::Accessor ݩ Class::Accessor::Fast ……͔ͬͨ Class::Accesor::Lite Tengͱ͔ͰΘΕ͍ͯΔFastΑΓૣ͍ جຊతʹ͜Ε͓͏ Class::Accessor::Tiny ϑΝΠϧαΠζ͍ܰͳͬͯࢥͬͨΒ19ߦͩͬͨ
135݄30༵
ͬͱΦϒδΣΫτΦϒ δΣΫτͨ͠ʔʔʔʔ͍ ྫ͑mix-inͱ͔ɺϝλϓϩతͳΞϨʁ͋ΔΜʁ RubyͬͯΔਓ͕ϞςΔͷͬͯɺ͔͢͠Δͱϝ λϓϩΛΨϦΨϦͬͯΔ͔Β͔͠Εͳ͍ʂ PerlͰϝλϓϩΔͱϞςΔ͔ʂ 135݄30༵
Moose Mouse Moo ϔϥδΧɹωζϛɹڇ ͍͍ͩͨ͜ͷลΓ͏ͱΞΫηαͷܕΛࢦఆͰ͖ ͨΓɺmix-inΈ͍ͨͳ͜ͱ͕ग़དྷͨΓɺϝλϓϩ ग़དྷͨΓศརػೳ͕ͨ͘͞Μ͋Δ 135݄30༵
MouseͰ͕ΜΔ package Sheep { use Mouse; has color => (
is => ‘rw’, isa => ‘Str’, default => sub { ‘white’ }, ); no Mouse; } 135݄30༵
Moose ݩϞμϯPerlͷOOPϞδϡʔϧ ͰΫιॏ͍ CatalystͳͲͷग़͕ࣗݹΊͷϞδϡʔϧͰґଘͯ͠ ͍Δ͜ͱ͕͋Δ 135݄30༵
Mouse ΄΅MooseͷΦϒδΣΫτγεςϜΛແۤૣ ͨ͘͠Ϡπ ҆৺ͱ৴པͱࠇຐज़ͷgfxΣΞ blessΑΓ͍Β͍͠ɻҙຯ͕Θ͔Βͳ͍ ࠃͰ͜ΕΛ͍·͠ΐ͏ 135݄30༵
Any::Moose ΦϫίϯͳͷͰΘͳ͍Α͏ʹ͠·͠ΐ͏ ͳ͓ɺ0.2ܥ·ͰͷArk͕ґଘ͍ͯ͠·͕͢0.3ܥ͔ ΒMouseʹΓସΘΓ·ͨ͠ ิ͢ΔͱɺMooseͱMouseͷͲ͔͍͍ͬͪ΄͏ Λ͏·͍͜ͱͬͯ͘ΕΔϥούʔͰ͢ 135݄30༵
Moo ւ֎Ͱྲྀߦ͍ͬͯΔΒ͍͠ ͍ΒΜͱ͜ΖলུՄͯ͋͠ΔఔಡΊΔײ͡Ͱ ͔͍ͭײ͡ʹ͍ͯ͠ΔΒ͍͠ ؾΛൈ͘ͱMooseʹม͢Δ(metaͱ͔) CPANʹ্͛ͨͯ͘ւ֎ͰΘΕ͍ͨͳΒ͜Ε 135݄30༵
݁ blessΊΜͲ͍͘͞ͷͰΊͱ͜͏ ΞΫηα͔͠ཁΒͳ͍ͳΒClass::Accessor::LiteͰ ͍͍Μ͡Όͳ͍͔ͳ ͕ͬͭΓOOP͍ͨ͠ͳΒMouseͰ ւ֎έΛૂ͏ͱ͔Mooseͷͭॻ͖͑Δͱ͖ MooͰ 135݄30༵
ւ֎έΛૂ͏ͱ͔Mooseͷͭॻ͖͑Δͱ͖ MooͰ 135݄30༵
MongoDB.pm meets Mouse 135݄30༵
MongoDBͱ 135݄30༵
ಛ εΩʔϚϨε جຊతʹΩʔͱυΩϡϝϯτͱ͍͏͚ؔͩΕͲɺυΩϡ ϝϯτͷͰݕࡧग़དྷͨΓ͢Δ ΠϯσοΫεషΕΔ JSONͬΆ͍ײ͡ͷܗࣜͰอଘ͞ΕΔ(BSON) JavaScriptͷ࣮ߦΤϯδϯੵΜͰΔͷͰؔͱ͔JSͰॻ͚Δ 135݄30༵
͜Μͳײ͡ db.collection.save({ user_id: 1 }) db.collection.find({ user_id: 1 }) db.collection.find({
user_id: { $gte: 0 }) 135݄30༵
ϩάͬΆ͍͜ͱͰ͖Δ capped collectionͱݴͬͯ͋ΔҰఆ༰ྔ·ͰஷΊ ͜ΜͰɺ͋;ΕͨΒݹ͍ͷ͔Βফ͍͍ͯͬͯ͘͠ ͏collection͕࡞ΕΔ 135݄30༵
MongoDB.pm is Moose 135݄30༵