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!QJDUJOZ
1SF4DBMB.BUTVSJ
-JHIUOJOH5BML
4DBMBॳ৺ऀ
̋̋̋ʹϝιουΛ
ੜ͍ͨ͠ͱߟ͑ͨ
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2020.08.30 2
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2020.08.30 3
4DBMBະܦݧͰΞϧϓೖࣾ
4DBMBྺ
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2020.02.16 4
ςΫϊϩδʔͷྗͰ
اۀͷܦࡁ׆ಈΛ
ࢧ͑ɺ֦ு͢Δɻ
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2020.08.30 5
ʮαϒεΫϦϓγϣϯϏδωεʹ͓͚Δ
શۀΛҰؾ௨؏ͰΧόʔʯ
ɾϓϥΠγϯά
ɾཧ
ɾސ٬ཧ
ɾܖཧ
ɾٻॻͷൃߦˍૹ
ɾΫϨδοτΧʔυܾࡁ
ɾ֤छσʔλੳ
ɾ༁ొɺձܭॲཧ
ɹɹɹɹɹɹɹɹɹɹɹetc…
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2020.02.16 6
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2020.02.16 7
%%%
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Ξϧϓɺ%%%ͬͯΔΑ
ɹɹɹɹɹɹɹαϒεΫϦϓγϣϯྖҬͷ4BB4
ෳࡶ͕ඇৗʹߴ͍
ͦͷͨΊ։ൃॳظ͔Β%%%Λಋೖ
શࣾతʹ࣮ફ
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2020.08.30 9
͔͜͜Βࠓͷ
˞ίʔυαϯϓϧͰ͢
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2020.08.30 10
ར༻υϝΠϯ
ٻରͱͳΔར༻ظؒΛநԽͨ͠ར༻ΦϒδΣΫτ 70
case class Availability (
startAt: LocalDate, // ར༻։࢝
endAt: LocalDate, // ར༻ऴྃ
billingDate: LocalDate, // ٻ
status: AvailabilityStatus // εςʔλε
)
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2020.08.30 11
ྫɿܞଳճઢͷܖ
֤݄ͷར༻͝ͱʹٻ͕ൃੜ͢Δ
ܖͰճઢΛܖ͢Δͱɺϲ݄ͷར༻͕ੜ͡Δ
ٻ͕ྃ͢Δͱରͷར༻ͷঢ়ଶ͕
ʮະٻʯ͔ΒʮٻࡁΈʯʹͳΔ
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2020.08.30 12
ܖυϝΠϯ
ܖΛநԽͨ͠ܖΦϒδΣΫτ &OUJUZ
ར༻Λෳ࣋ͭ
case class Contract (
id: ContractId, // ܖID
availabilities: Seq[Availability], // ར༻
status: ContractStatus, // εςʔλε
pricing: …, // ྉۚઃఆ
…
)
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ະٻͷར༻ΛٻΊΔ
ར༻ͷεςʔλε͕ະٻͳͷ
case class Contract (…) {
def unBilledAvailabilities: Seq[Availability] =
availabilities.filter(_.status = UnBilled) // ະٻͷར༻
}
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࣍ճͷٻΛٻΊΔ
ະٻͷར༻ͷ͏ͪɺٻ͕࠷͍ۙͷ
case class Contract (…) {
def nextBillingDate(today: LocalDate): LocalDate =
availabilities.filter(_.status = UnBilled) // ະٻͷར༻Ͱ
.filter(_.billingDate > today) // ٻ͕ࠓΑΓະདྷͰ
.minBy(_.billingDate.toEpochDay) // ٻ͕࠷աڈͷͷ
.billingDate
}
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ࠓٻ͢Δར༻ΛٻΊΔ
ະٻͷར༻ͷ͏ͪɺٻ͕ࠓͷͷ
case class Contract (…) {
def shouldCreateBilling(today: LocalDate): Seq[Availability] =
availabilities.filter(_.status = UnBilled) // ະٻͷར༻Ͱ
.filter(_.billingDate = today) // ٻ͕ࠓ
}
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͍ͭಉ͡pMUFSͯ͠ͳ͍ʁ
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ϦϑΝΫλ
ར༻͕ܖʹ͔͠ొ͠ͳ͍ͳΒ͜ΕͰ͍͍͕ʜ
case class Contract (…) {
def unBilledAvailabilities: Seq[Availability] =
availabilities.filter(_.status = UnBilled) // ະٻͷར༻
def nextBillingDate(today: Localdate): LocalDate =
unBilledAvailabilities
.filter(_.billingDate > today) // ٻ͕ࠓΑΓະདྷͰ
.minBy(_.billingDate.toEpochDay) // ٻ͕࠷աڈͷͷ
.billingDate
}
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ٻΛൃੜͤ͞Δ
ٻίϯςΩετͰར༻Λ৮ͬͨΓ͢Δ
case class Billing(…)
object Billing {
def createBilling(today: LocalDate, contract: Contract): Billing = {
val availabilities = contract.shouldCreateBilling(today)
val billing = ??? // TODO: ར༻ΛͬͯٻΛ࡞Δ
}
}
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2020.08.30 20
ͱ͍͏Θ͚Ͱ
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2020.08.30 21
4FRʹϝιουΛੜ͍ͨ͠
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!QJDUJOZ
1SF4DBMB.BUTVSJ
-JHIUOJOH5BML
4DBMBॳ৺ऀ
̋̋̋ʹϝιουΛ
ੜ͍ͨ͠ͱߟ͑ͨ
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!QJDUJOZ
1SF4DBMB.BUTVSJ
-JHIUOJOH5BML
4DBMBॳ৺ऀ
̋̋̋ʹϝιουΛ
ੜ͍ͨ͠ͱߟ͑ͨ
Seq
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2020.08.30 24
4FRʹϝιουΛੜ͍ͨ͠
ҙຯΛ࣋ͬͨίϨΫγϣϯૢ࡞ʹ໋໊͍ͨ͠
ϩδοΫͷݟ௨͠ΛΑ͍ͨ͘͠
*%&ͷίʔυิΛޮ͔͍ͤͨ
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ʮͦΕJNQMJDJUͰͰ͖ΔΑʯ
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☺
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ʮ͓͢͢Ί͠ͳ͍͚Ͳʯ
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2020.08.30 29
JNQMJDJU
4FRʹϝιουΛੜͤΔ͕ʜ
ఆٛ͢Δॴ͕͍͠ υϝΠϯʁ
Ͳ͜Ͱఆٛ͞Ε͍ͯΔ͔ ݺͼग़͠ଆ͔Β
Θ͔Γʹ͍͘
υϝΠϯࣝJNQMJDJUͨ͘͠ͳ͍
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2020.08.30 30
͡Ό͋Ͳ͏͢Δ͔
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2020.08.30 31
υϝΠϯࣝܕʹ͠Α͏
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ར༻ͷίϨΫγϣϯΦϒδΣΫτԽ
ܖར༻ίϨΫγϣϯΦϒδΣΫτΛ࣋ͭΑ͏ʹͳΔ
case class Availabilities(
values: Seq[Availability]
)
case class Contract (
id: ContractId,
availabilities: Availabilities, // ίϨΫγϣϯΦϒδΣΫτΛ࣋ͭ
status: ContractStatus,
pricing: …,
)
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ະٻͷར༻ΛٻΊΔ
ར༻ͷυϝΠϯࣝͱ࣮ͯ͠Ͱ͖Δ
case class Availabilities (…) {
def unBilledAvailabilities: Availabilities =
Availabilities(availabilities.filter(_.status = UnBilled))
}
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ٻΛൃੜͤ͞Δ
ར༻ίϨΫγϣϯܕΛૢ࡞͢ΕΑ͘ͳΔ
case class Billing(…)
object Billing {
def createBilling(today: LocalDate, contract: Contract): Billing = {
val availabilities: Availabilities =
contract.shouldCreateBilling(today) // AvailabilitesܕΛฦ͢
val billing = ??? // TODO: ར༻ΛͬͯٻΛ࡞Δ
}
}
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2020.08.30 35
ίϨΫγϣϯΦϒδΣΫτͷར
ϝιου͕ੜͤΔ
ܕͷදݱྗ͕͑Δ
ϦϑΝΫλ͍͢͠
'JOE6TBHFͰӨڹൣғ͕Θ͔Γ͍͢
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5JQT
ඪ४తͳૢ࡞USBJUͰܧঝͰ͖ΔΑ͏ʹ͓ͯ͘͠ͱศར
trait class CustomCollection[A] {
val values: Seq[A]
def isEmpty: Boolean = values.isEmpty
def nonEmpty: Boolean = values.nonEmpty
def length: Boolean = values.length
…
}
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ؾ͖
4FRʹϝιουΛੜ͍ͨ͠ͱߟ͑ͨ
Ͱɺ4FRʹϝιουΛੜ͢ͷ͋͘·Ͱखஈ
ͳͥͦ͏ߟ͑ͨͷ͔ɺཧ༝ΛݴޠԽ͢Δ͜ͱ͕େࣄ
ผͷखஈͰత͕ୡͰ͖Δ͜ͱ͋Δ
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·ͱΊ
4FRʹϝιουΛੜͨ͘͠ͳͬͨ
ίϨΫγϣϯ͕υϝΠϯϩδοΫΛ࣋ͭ͜ͱ͕͋Δ
υϝΠϯϩδοΫΛ࣋ͭͷܕͱͯ͠ఆٛ͢Δͷ͕Α͍
*%&ͷԸܙେ͖͍
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4DBMBΤϯδχΞ࠾༻த
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