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υϝΠϯۦಈઃܭΛ
ܰշʹ࣮ફ͢ΔͨΊ
ͷ
2016/3/4 ؔDDD.java
@haljik
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ࣗݾհ
Տ্ ࢘(͔Θ͔Έ ͍ͤ͡ʣ
@haljik
ϑϦʔϥϯεJavaΤϯδχΞ
4 ؔDDD.javaओ࠵
4 ؔJavaΤϯδχΞͷձϝϯόʔ
4 DDDΞϥΠΞϯεൃىਓϝϯόʔ
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ࠓ͢͜ͱ
4 ॏް͞ͱܰշ͞
4 ϞσϧͷϑΟʔυόοΫɾϧʔϓ
4 ϚΠϒʔϜ
4 ࠷ۙͷ՝
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ࠓ͞"ͳ͍"͜ͱ
4 ϓϩδΣΫτॳظͷ׆ಈ
͓͓ΑͦͷۀΠϝʔδɺγεςϜͷશମ
૾ɺࠎ֨ͱͳΔ༻ޠΠϯϓοτࡁΈͰɺ
͋Δఔͷूϧʔτ͕ݟ͍͑ͯΔ͙Β͍ͷঢ়
ଶΛલఏͱ͓ͯ͠ฉ͖͍ͩ͘͞ɻ
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എܠ
4 WebΞϓϦέʔγϣϯ։ൃ
4 Java
4 Spring Boot
4 Thymeleaf
4 MyBatis
H2database & PostgreSQL
4 ։ൃϝϯόʔ࠷େͰ10ਓ͙Β͍ͷنײ
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ࢲ͕ࢥ͏ॏް͞
4 ϞσϧਤΛ͔ͬ͠Γॻ͘
4 ৗʹϞσϧਤΛߋ৽͢Δ
4 ϞσϧਤͰυϝΠϯΤΩεύʔτͱձ
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ॏް͞ͷ
4 ϞσϧਤͰձͯ͘͠ΕΔυϝΠϯΤΩεύʔ
τ͍ͬͯΔͷ?
4 ී௨υϝΠϯΤΩεύʔτ͍ͬͯ͠ਓͩΑ
Ͷ?
4 ͦͦυϝΠϯΤΩεύʔτ͕͍ͳ͍
4 ϞσϧਤΛৗʹ࠷৽ʹߋ৽͢Δ࣌ؒ͋ΔͳΒί
ʔυॻ͖͍ͨ
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ࢲ͕ࢥ͏ܰշ͞
4 ݪଇίʔυϑΝʔετ
4 ϞσϧਤΛؚΉυΩϡϝϯτྨεφοϓγϣ
οτͱͯ͠ॻ͘͜ͱ͋Δ
4 υϝΠϯΤΩεύʔτΛͨͳ͍
4 ސ٬ɺར༻ऀ͔ΒͷϑΟʔυόοΫಈ͘UI͔
ΒͰྑ͠ͱ͢Δ
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ཁϞσϧΛચ࿅͍ͤͯ͞
ͨ͘Ίͷૉૣ͍ϑΟʔυό
οΫϧʔϓΛͲͷΑ͏ʹߏங
͢Δͷ͔
4 ࣗୡͰճͤΔϧʔϓࣗୡͰճ͢
4 ૣ͘খ͘͞ճ͢
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۩ମతʹͲ͏͍ͯ͠Δ͔
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ϑΟʔυόοΫɾϧʔϓΛ
ࢧ͑Δ׆ಈͷશମ૾
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No content
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ྫɿ৽͍͠ूϧʔτͱ͠
ͯʮར༻ऀʯΛՃ͢Δ
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લఏͱͳ͍ͬͯΔ։ൃελΠϧ
4 ूϧʔτ͕։ൃͷجຊ୯Ґ
4 ूϧʔτʹରͯ͠Ϣʔεέʔε͕͋Δ
4 ྫ͑ར༻ऀͩͱɺ৽نొɺϓϩϑΟʔ
ϧมߋ etc.
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1. ूϧʔτͷ࣮
4 ूͱͦͷID͙Β͍
public class User {
UserId id;
}
public class UserId {
String value;
}
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2. ϢʔεέʔεͷςετΛॻ͘
@Autowired
UserRegisterService service;
def "ར༻ऀΞΧϯτͷ৽نొ"() {
given:
def newUser = new User();
when: "ొ͢Δ"
service.register(newUser);
then: "ొͰ͖Δ"
noExceptionThrown();
}
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3. ϢʔεέʔεΛ࣮͢Δ
@Service
public class UserRegisterService {
@Autowired
UserRepository repository;
public void register(User user) {
repository.register(user);
}
}
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4. σʔλιʔεͷ࣮
public interface UserRepository {
void register(User user);
}
@Repository
public class UserDataSource implements UserRepository {
//...ུ
}
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5. ϓϨθϯςʔγϣϯͷ࣮
@Controller
public class UserRegisterController {
//ొը໘ͷදࣔ
//ొ
}
Ϣʔβʔొ
Ϣʔβʔొ
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͜ͷঢ়ଶͰεοΧ
εΧʹݟ͑Δ…
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ͦΕͰ࠷ॳʹ͜ͷ
ঢ়ଶͰಈ͔͢͜ͱΛ
ࢦ͢
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ͦͯ͜͠ͷʮಈ͘ঢ়ଶʯΛ
ʮҡ࣋ʯ͠ͳ͕Β2ʙ5·ͰΛ܁Γฦ͢
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ʮಈ͔ͳ͍ঢ়ଶʯ
= ϑΟʔυόοΫ·Ͱ͕͍
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ʮಈ͘ঢ়ଶʯ
= ϑΟʔυόοΫ·Ͱ͕͍
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ಘΒΕΔϑΟʔυόοΫ
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1. ूϧʔτͷ࣮
4 ͜ͷ࣌ͰͳʹϑΟʔυόοΫ͕ͳ͍ɻ
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2. ςετΛॻ͘
4 ॳճͷϑΟʔυόοΫ΄΅ͳ͍
4 Ϣʔεέʔεͷҙຯ͕ϝιου໊ʹݱΕΔ͔ʁ
ͱ͔
4 ΠϯελϯεੜnewͰྑ͍Μ͚ͩͬʁԿ͕
ඞཁʹͳΔΜ͚ͩͬʁ
ͱ͔࣮ͷࢦΈ͍ͨͳؾ͖ͮ݁ߏ͋Δ
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3. ϢʔεέʔεΛ࣮
4 ॳճͷϑΟʔυόοΫ΄΅ͳ͍
4 ͜͜ͰϞσϧͷ͍উख͕Θ͔Δ
4 Ϣʔεέʔε͕ෳࡶԽͯ͘͠Δͱۀ͕ࣝᷓ
Εग़ͯ͠·͏ࣄ͕ଟ͍
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4. σʔλɾιʔεͷ࣮
4 DB͔ΒͷϑΟʔυόοΫ
4 ͜͜࠷ॳϑΟʔυόοΫͳ͍
4 Կ͔͋Δ߹ϞσϧʹͱͬͯϚΠφεͷϑ
ΟʔυόοΫʹͳΓ͕ͪ...
4 ͰσʔλͷϥΠϑαΠΫϧΛͲ͏͢ΔΜ
͚ͩͬʁͱ͔ͦ͏͍͏ؾ͖͋Δ
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5. ϓϨθϯςʔγϣϯͷ࣮
4 UI͔ΒͷϑΟʔυόοΫ
4 ࠷ॳͷঢ়ଶͰͦΜͳʹϑΟʔυόοΫ
ͳ͍
4 Ϟσϧʹߏ͕ग़ͯ͘ΔͱɺͦΕΛHTML
ʹөͤ͞Δͱ͖ʹҧײΛײͨ͡Γ
4 ϓϩάϥϚʔҎ֎ͷਓ͔ΒϑΟʔυόοΫ
͕Β͑Δ <-ॏཁ
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ίʔυ͔ΒಘΒΕͳ͍ͷ
4 ूΛލ͙၆ᛌࢹ͔Βͷҧײෆ߹
※ਂ͍Ϟσϧʹ౸ୡ͢Δʹඞཁʹࢥ͑Δ
͜͜ࡧத
4 શମΛ௨͢γφϦΦςετΛॻ͍͓ͯ͘ͱ͔
4 Ϗϧυ͢ΔͱԿ͔ਤΛੜ͢Δͱ͔
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ॏཁͳ͜ͱ
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ϓϩάϥϚʔҎ֎ͷਓ͔Β
ϑΟʔυόοΫ͕Β͑Δঢ়ଶΛ
ૣ͘࡞ͬͯҡ࣋͢Δࣄ
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࠷ॳශ݂Ͱྑ͍
࿙ΕͰͨۀࣝΛޙ͔ΒͰ
υϝΠϯϞσϧʹͤΔΑ͏ʹ࡞Δ
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։ൃऀۀࣝΛϞσϧ
ʹڽू͍ͤͯ͘͞աఔͰͦ
ͷυϝΠϯʹର͢ΔཧղΛ
ਂΊΔ
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ͦΕ͕ਂ͍Ϟσϧͷ͕
͔ΓʹͳΔ
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ؓٳ
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ϚΠϒʔϜ(ࢮޠ?)
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ෳͷूΛࢀর͢Δूϧʔτͷ෮ݩ
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ྫ͑
ޏ༻อݥՃೖ݅ͱ͍͏ूϧʔτΛ෮ݩ͍ͨ͠
4 Ұिؒͷबۀ͕࣌ؒ߹ܭ20࣌ؒҎ্
4 Ұϲ݄ͷबۀ͕࣌ؒ߹ܭ87࣌ؒҎ্
4 बۀظ͕ؒ31Ҏ্
4 னֶؒੜͰͳ͍
4 ޏ༻։࢝࣌Ͱ65ࡀະຬ
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ඞཁͳଞͷू
* ඃޏ༻ऀͷۈ݅
Ұिؒ͋ͨΓͷबۀ࣌ؒ
Ұϲ݄͋ͨΓͷबۀ࣌ؒ
* ඃޏ༻ऀͷݸਓใ
னֶؒੜ͔Ͳ͏͔
ྸ
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Ͳ͏͍͏࣮͕ߟ͑ΒΕΔ͔ʁ
1. ΞϓϦέʔγϣϯαʔϏεͰ
ଞͷूͷαʔϏεΛݺͿʁ
2. ޏ༻อݥՃೖ݅ͷϦϙδτϦͰ
ଞͷूͷϦϙδτϦΛݺͿʁ
3. SQLͰ·ͱΊͯऔͬͯ͘Δʁ
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࠷ۙ1
4 ΓूͷϑΝαʔυΞϓϦέʔγϣϯα
ʔϏεʹͳ͍ͬͯΔͷ͕ࣗવʹײ͡Δ
4 ࢀর͍ͯ͠Δू͕ޙ͔ΒผίϯςΩετڥք
ͷͷͰ͋Δࣄ͕Θ͔ͬͯผϓϩηεͰಈ࡞͢
ΔαʔϏεͱͳΔՄೳੑ͕͋Δ
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ूϧʔτΛ෦ߋ৽͢ΔࡍͷӬଓԽ
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େମूͷҰ෦͚ͩͷߋ
৽ཁ͕݅ൃੜ͢Δ
͍ΘΏΔλεΫϕʔεUIݦஶʹͦ͏ͳΔɻ
ूϧʔτ͕࣋ͭάϩʔόϧͳࣝผࢠΛม͑Δ͜
ͱͳ͘ɺ ԼͷΤϯςΟςΟ͚ͩΛߋ৽͢Δτϥ
ϯβΫγϣϯΛߦ͏έʔε͕ଟ͍
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Ͳ͏͍͏࣮͕ߟ͑ΒΕΔ͔ʁ
1. ৗʹ·Δ͝ͱӬଓԽ͢Δʁ
2. ߋ৽͢Δ෦͚ͩͷߋ৽ґཔʢ̋̋RequestΦ
ϒδΣΫτʣΛ࡞Δʁ
3. ू͔ΒDomainEventΛൃߦͯ͠Subscriber
͕ӬଓԽʁ
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߹ʹΑΓҧ͏͚Ͳେମ̎
4 ·Δ͝ͱӬଓԽ
4 DataSourceʹͨ࣌͠Ͱ෦ߋ৽Ͱ͋
Δ͜ͱͷจ຺͕ࣦΘΕ͕ͪ
4 DomainEvent
4 ໌ࣔతͳϏδωεϓϩηε͕ΠϕϯτΛܦ
༝͢Δ͜ͱͰӅΕͯ͠·͍ͦ͏
4 ͰΦϒδΣΫτࢦతʹʮ͍߹Θͤ
Δͳ໋͡Ζʯ͕Ͱ͖ͦ͏ͰͬͯΈ͍ͨ
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2ͷ࣮ྫ
ར༻ऀϞσϧ
public class User { //ར༻ऀ
UserId id;
...
Profile profile; //ݸਓใ
ResponsibleArea area; //୲ΤϦΞ
}
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2ͷ࣮ྫ(ଓ͖)
ݸਓใߋ৽࣌ͷґཔΦϒδΣΫτ
public class ProfileUpdateRequest {
User old; //ूϧʔτΛ๊͑ͯ͠·͏
Profile update;
}
୲ΤϦΞߋ৽࣌ͷґཔΦϒδΣΫτ
public class ResponsibleAreaUpdateRequest {
User old; //ूϧʔτΛ๊͑ͯ͠·͏
ResponsibleArea area;
}
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2ͷ࣮ྫ(ଓ͖)
ར༻ऀαʔϏε
@Service
public UserRegisterService {
@Autowired
UserRepository repository;
public void register(User user) {
repository.register(user); //ొ·Δͬͱ
}
public void updateProfile(ProfileUpdateRequest request) {
repository.register(request); //ϦϙδτϦΠϕϯτͷੵΈ্͛
}
public void updateResponsibleArea(ResponsibleAreaRequest request) {
repository.register(request); //ϦϙδτϦΠϕϯτͷੵΈ্͛
}
}
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2ͷ࣮ྫ(ଓ͖)
σʔλϕʔε
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No content
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2ͷ࣮ྫ(ଓ͖)
Πϛϡʔλϒϧσʔλ
4 Πϕϯτσʔλॻ͖͑ͳ͍
4 ࠷৽Ϩίʔυͷཧ͚ͩΛߦ͏
ར
4 ӨڹൣғͷہॴԽ
4 τϥϯβΫγϣϯʹཔΒͳͯ͘ྑ͍
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1:Nͷղ͖ํ
ྫɿٻਓ(1)ʹඥͮ͘Ҭ(N)͕͋Δ߹ʹɺٻਓ
ҰཡΛऔಘ͢Δɻ
1. SQLͰjoinͯ͠MyBatisͷResultMapͳͲͰ
্ख͘ٵऩͯ͠औಘ͢Δ
2. JavaଆͰผ్औಘͯ͠ޙ͔ΒJoin͢Δɻ
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࠷ۙՄೳͰ͋Ε2
4 StreamAPIͷԸܙͰผʑʹऔಘ &
GroupingBy & Ϛʔδ ͕؆୯
4 ͰϝϞϦޮѱ͍ͷͰStreamΛฦͯ͘͠
ΕΔDomaʹ͍ͯ͠Δ
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ೖྗͷλΠϓϛεϚον
ྫ: ෦ܕ͕IntegerͳͲܕͰ͋Δ߹
4 ߲୯ҐͷόϦϡʔΦϒδΣΫτͷ෦ܕΛจ
ࣈྻʹ͢Δ͜ͱͰղܾ͍ͯ͠Δ
4 ߲ͦͦ୯ҐͷܕΛ࡞ΔͷͰ෦ܕԿͰ
ྑ͍
4 λΠϓϛεϚονΤϥʔͱೖྗݕূΤϥʔͷग़
ΔλΠϛϯάͰফ͢Δ͙Β͍ͳΒจࣈྻͰ
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࠷ۙͷٕज़త՝
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࠷ۙͷٕज़త՝
ೖྗͷόΠϯσΟϯά
4 setter࡞Γͨ͘ͳ͍
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࠷ۙͷٕज़త՝
ೖྗͷݕূ
4 λΠϛϯάUIͷίϯτϩʔϥ͡Όͳͯ͘α
ʔϏεͰ
※ݕূҧΛྫ֎ͱͯ͠͠·͑εοΩϦ͢Δ
4 એݴϞσϧʹڽू͍ͤͨ͞
※BeanValidationͰ͋Δఔ࣮ݱ͍ͯ͠Δ
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࠷ۙͷٕज़త՝
ηΩϡϦςΟ
4 ηΩϡϦςΟʹؔ͢Δ͕ࣝڽू͠ʹ͍͘
4 Ϟσϧʹڽू্ͤͨ͞Ͱԣஅతʹద༻͍ͨ͠
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࠷ۙͷٕज़త՝
DB͔Βͷूϧʔτ෮ݩ
4 ςʔϒϧϚούʔͰ͍͠
4 SQLͷ݁ՌηοτΛϚοϐϯά͍ͨ͠
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DB͔Βͷूϧʔτ෮ݩ(ଓ͖ʣ
ݱ࣌Ͱ૬ੑͷྑͦ͞͏ͳϑϨʔϜϫʔΫ
4 Doma
DomaͰݴ͏EntityΛDomainϞσϧʹ͢
Δ͜ͱͳ͍͚Ͳɺ DomaͷEntity͔Βू
ϧʔτΛ෮ݩͬͯͷ༗Γͳؾ͕͍ͯ͠Δ
4 SpringͷJdbcTemplate
͍Ζ͍Ζͱ͔ͿͤΕ͋Δ͍…
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DB͔Βͷूϧʔτ෮ݩ(ଓ͖ʣ
΄͍͠ػೳ
4 ࣮ߦίϯςΩετʹ͋ΔΦϒδΣΫτΛผͷΦ
ϒδΣΫτͷϑΟʔϧυʹϚοϐϯά
4 ϑΝΫτϦϝιουʹରԠ
4 StreamΛฦ͢API
4 ୯߲ValueObjectʹରԠ
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Ҏ্ɺ࠷ۙͷٕज़త՝Ͱͨ͠
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࠷ޙʹ
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υϝΠϯϞσϧʹؔ৺ࣄΛຊʹڽूͤ͞Δʹ
·ͩ·ٕͩज़తͳ՝ඞཁͳϊϋ͕
ͨ͘͞Μ͋Γ·͢ʂ
ָ͠ΜͰ͍͖·͠ΐ͏ʂ
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͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ
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