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ͳͥ୭͜͏ॻ͍ͯ͘Εͳ͍
%FQFOEFODZ*OKFDUJPOೖ
TBJLPV LPKJTBJLJ
ਅ
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͓·͑୭
͓ͳ·͑ɿࠤഢߛೋʢ͍͖͜͞͏͡ʣ
ͱ͜ΖɿԬʗେࡕ
ͭͿ͖ɿIUUQTUXJUUFSDPNTBJLPV
͗ͬͿɿIUUQTHJUIVCDPNLPKJTBJLJ
ͿΖ͙ɿIUUQJSPOZIBUFOBCMPHDPN
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%*ೖʹ؊͕ॻ͔Εͯ
ແ͍ʢେʣ
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ਅͷ%*ೖΛ͓ݟͤ͠·
͠ΐ͏ ʆɾТɾ
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͍ΘΏΔzೖαΠτz
Ұ୴Ε·͠ΐ͏
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ΞδΣϯμ
%*Λz֮͑Δz
%*Λzղ͘z
·ͱΊ
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ΞδΣϯμ
%*Λz֮͑Δz
%*Λzղ͘z
·ͱΊ
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ૣίʔυΛݟ·͠ΐ͏
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class GasolineCar {
private GasolineEngine engine;
constructor() {
this.engine = new GasolineEngine();
}
startEngine() {
this.engine.start();
}
accelEngine() {
this.engine.accelerate();
}
}
˞ٙࣅίʔυͰ͢
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class DieselCar {
private DieselEngine engine;
constructor() {
this.engine = new DieselEngine();
}
startEngine() {
this.engine.start();
}
accelEngine() {
this.engine.accelerate();
}
}
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ͳΜͱ͔͍ͨ͠ɾɾɾ
&OHJOFҎ֎࠶ར༻Ͱ͖ͦ͏
&OHJOF͍ํʢTUBSUͱ͔ʣಉͬ͡Ά͍
class GasolineCar {
private GasolineEngine engine;
constructor() {
this.engine = new GasolineEngine();
}
startEngine() {
this.engine.start();
}
accelEngine() {
this.engine.accelerate();
}
}
class DieselCar {
private DieselEngine engine;
constructor() {
this.engine = new DieselEngine();
}
startEngine() {
this.engine.start();
}
accelEngine() {
this.engine.accelerate();
}
}
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interface Engine {
void start();
void accelerate();
}
class Car {
private Engine engine;
public Car(Engine _engine) {
this.engine = _engine;
}
void startEngine() {
this.engine.start();
}
void accelEngine() {
this.engine.accelerate();
}
}
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interface Engine {
void start();
void accelerate();
}
class Car {
private Engine engine;
public Car(Engine _engine) {
this.engine = _engine;
}
void startEngine() {
this.engine.start();
}
void accelEngine() {
this.engine.accelerate();
}
}
*OUFSGBDFΛ
ҾͰͤεοΩϦʂ
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Ҏ্ʂ
%*͓ΘΓʂ
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ͬͨͶʂ
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ʁ
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
ɺ͏ॴΑΓ֎͔Β༩͑Εղܾʂ
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ʁ
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
ɺ͏ॴΑΓ֎͔Β༩͑Εղܾʂ
%*ͷߟ͑ํʮ͜Ε͚ͩʯʂϚδͰɻ
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֮͋͑͞Α͏ʂ
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
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֮͋͑͞Α͏ʂ
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
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֮͋͑͞Α͏ʂ
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
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֮͋͑͞Α͏ʂ
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯεz
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ΞδΣϯμ
%*Λz֮͑Δz
%*Λzղ͘z
·ͱΊ
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Α͋͘Δz%*ͷޮೳz
༷มߋʹڧ͘ͳΔ
ςετ͕͘͢͠ͳΔ
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༷มߋʹڧ͘ͳΔ
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༷มߋʹڧ͘ͳΔ
ʹ҆શʹมߋͰ͖Δ
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༷มߋʹڧ͘ͳΔ
ʹ҆શʹมߋͰ͖Δ
ʹӨڹൣғ͕ݮΔ
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%*લ
class Owner {
main() {
GasolineCar gasolineCar
= New GasolineCar();
DieselCar dieselCar
= New DieselCar();
}
}
class GasolineCar {}
class DieselCar {}
)ZCSJE$BSΛՃ
͠Α͏
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%*લ
class Owner {
main() {
GasolineCar gasolineCar
= New GasolineCar();
DieselCar dieselCar
= New DieselCar();
// Ճ
HybridCar hybridCar
= New HybridCar();
}
}
class GasolineCar {}
class DieselCar {}
class HybridCar {
private HybridEngine engine;
public HybridCar() {
this.engine = new HybridEngine();
}
startEngine() {
this.engine.start();
}
accelEngine() {
this.engine.accelerate();
}
}
͜ͷ͘Β͍Ճ
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%*ޙ
class Owner {
main() {
GasolineEngine gasolineEngine
= new GasolineEngine();
Car gasolineCar
= new Car(gasolineEngine);
DieselEngine dieselEngine
= new DieselEngine();
Car dieselCar
= new Car(dieselEngine);
}
}
interface Engine {
void start();
void accelerate();
}
class Car {
private Engine engine;
public Car(Engine _engine) {
this.engine = _engine;
}
void startEngine() {
this.engine.start();
}
void accelEngine() {
this.engine.accelerate();
}
}
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%*ޙ
class Owner {
main() {
GasolineEngine gasolineEngine
= new GasolineEngine();
Car gasolineCar
= new Car(gasolineEngine);
DieselEngine dieselEngine
= new DieselEngine();
Car dieselCar
= new Car(dieselEngine);
// Ճ
HybridEngine hybridEngine
= new HybridEngine();
Car hybridCar
= new Car(hybridEngine);
}
}
interface Engine {
void start();
void accelerate();
}
class Car {
private Engine engine;
public Car(Engine _engine) {
this.engine = _engine;
}
void startEngine() {
this.engine.start();
}
void accelEngine() {
this.engine.accelerate();
}
}
͜Ε͚ͩͰ0,
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༷มߋʹڧ͘ͳͬͨʂ
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ςετ͕͘͢͠ͳΔ
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ςετ͕͘͢͠ͳΔ
ʹग़ೖޱ͕҆ఆ͢Δ
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ςετ͕͘͢͠ͳΔ
ʹग़ೖޱ͕҆ఆ͢Δ
ʹΠϯλϑΣʔεͷ
ɹՃɾมߋ͕ݮΔ
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%*લ
class Owner {
main() {
GasolineCar gasolineCar
= New GasolineCar();
DieselCar dieselCar
= New DieselCar();
// Ճ
HybridCar hybridCar
= New HybridCar();
}
}
class GasolineCar {}
class DieselCar {}
class HybridCar {
private HybridEngine engine;
public HybridCar() {
this.engine = new HybridEngine();
}
startEngine() {
this.engine.start();
}
accelEngine() {
this.engine.accelerate();
}
}
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%*લ
class Owner {
main() {
GasolineCar gasolineCar
= New GasolineCar();
DieselCar dieselCar
= New DieselCar();
// Ճ
HybridCar hybridCar
= New HybridCar();
}
}
class GasolineCar {}
class DieselCar {}
class HybridCar {
private HybridEngine engine;
public HybridCar() {
this.engine = new HybridEngine();
}
startEngine() {
this.engine.start();
}
accelEngine() {
this.engine.accelerate();
}
}
૿͑ͨΠϯλϑΣʔε
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%*લ
class Owner {
main() {
GasolineCar gasolineCar
= New GasolineCar();
DieselCar dieselCar
= New DieselCar();
// Ճ
HybridCar hybridCar
= New HybridCar();
}
}
class GasolineCar {}
class DieselCar {}
class HybridCar {
private HybridEngine engine;
public HybridCar() {
this.engine = new HybridEngine();
}
startEngine() {
this.engine.start();
}
accelEngine() {
this.engine.accelerate();
}
}
ςετ͢Δൣғ
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%*ޙ
class Owner {
main() {
GasolineEngine gasolineEngine
= new GasolineEngine();
Car gasolineCar
= new Car(gasolineEngine);
DieselEngine dieselEngine
= new DieselEngine();
Car dieselCar
= new Car(dieselEngine);
// Ճ
HybridEngine hybridEngine
= new HybridEngine();
Car hybridCar
= new Car(hybridEngine);
}
}
interface Engine {
void start();
void accelerate();
}
class Car {
private Engine engine;
public Car(Engine _engine) {
this.engine = _engine;
}
void startEngine() {
this.engine.start();
}
void accelEngine() {
this.engine.accelerate();
}
}
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%*ޙ
class Owner {
main() {
GasolineEngine gasolineEngine
= new GasolineEngine();
Car gasolineCar
= new Car(gasolineEngine);
DieselEngine dieselEngine
= new DieselEngine();
Car dieselCar
= new Car(dieselEngine);
// Ճ
HybridEngine hybridEngine
= new HybridEngine();
Car hybridCar
= new Car(hybridEngine);
}
}
interface Engine {
void start();
void accelerate();
}
class Car {
private Engine engine;
public Car(Engine _engine) {
this.engine = _engine;
}
void startEngine() {
this.engine.start();
}
void accelEngine() {
this.engine.accelerate();
}
}
૿͑ɾɾɾͯͳ͍ʂ
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%*ޙ
class Owner {
main() {
GasolineEngine gasolineEngine
= new GasolineEngine();
Car gasolineCar
= new Car(gasolineEngine);
DieselEngine dieselEngine
= new DieselEngine();
Car dieselCar
= new Car(dieselEngine);
// Ճ
HybridEngine hybridEngine
= new HybridEngine();
Car hybridCar
= new Car(hybridEngine);
}
}
interface Engine {
void start();
void accelerate();
}
class Car {
private Engine engine;
public Car(Engine _engine) {
this.engine = _engine;
}
void startEngine() {
this.engine.start();
}
void accelEngine() {
this.engine.accelerate();
}
}
͜ͷྲྀΕ͚ͩ
ςετ͢Ε0,
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ςετ͘͢͠ͳͬͨʂ
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Α͋͘Δz%*ͷޮೳz
༷มߋʹڧ͘ͳΔ
ςετ͕͘͢͠ͳΔ
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Α͋͘Δz%*ͷޮೳz
༷มߋʹڧ͘ͳΔ
ςετ͕͘͢͠ͳΔ
2&%
ʢূ໌ऴྃʣ
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͜͜·ͰͰ͖ͨਓ
࣍ʹԿΛߟ͑Δʁ
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͜͜·ͰͰ͖ͨਓ
࣍ʹԿΛߟ͑Δʁ
ͦͦΠϯελϯεΛOFX͢Δॲཧॻ͖ͨ
͘ͳ͍ʂ
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͜͜·ͰͰ͖ͨਓ
࣍ʹԿΛߟ͑Δʁ
ͦͦΠϯελϯεΛOFX͢Δॲཧॻ͖ͨ
͘ͳ͍ʂ
ςετͷ࣌ͱຊ൪ͷ࣌ͰΠϯελϯεΛΓସ
͍͚͑ͨͲɺίʔυ৮Γͨ͘ͳ͍ʂ
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͜͜·ͰͰ͖ͨਓ
࣍ʹԿΛߟ͑Δʁ
ͦͦΠϯελϯεΛOFX͢Δॲཧॻ͖ͨ
͘ͳ͍ʂ
ςετͷ࣌ͱຊ൪ͷ࣌ͰΠϯελϯεΛΓସ
͍͚͑ͨͲɺίʔυ৮Γͨ͘ͳ͍ʂ
ͦΜͳপͳྟػԠมͳػೳΛΘ͟Θࣗ͟Ͱ࡞
Γͨ͘ͳ͍ʂ
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͜͜·ͰͰ͖ͨਓ
࣍ʹԿΛߟ͑Δʁ
ͦͦΠϯελϯεΛOFX͢Δॲཧॻ͖ͨ
͘ͳ͍ʂ
ςετͷ࣌ͱຊ൪ͷ࣌ͰΠϯελϯεΛΓସ
͍͚͑ͨͲɺίʔυ৮Γͨ͘ͳ͍ʂ
ͦΜͳপͳྟػԠมͳػೳΛΘ͟Θࣗ͟Ͱ࡞
Γͨ͘ͳ͍ʂ
ͬͱָʹɾɾɾ
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͜͜·ͰͰ͖ͨਓ
࣍ʹԿΛߟ͑Δʁ
ͦͦΠϯελϯεΛOFX͢Δॲཧॻ͖ͨ
͘ͳ͍ʂ
ςετͷ࣌ͱຊ൪ͷ࣌ͰΠϯελϯεΛΓସ
͍͚͑ͨͲɺίʔυ৮Γͨ͘ͳ͍ʂ
ͦΜͳপͳྟػԠมͳػೳΛΘ͟Θࣗ͟Ͱ࡞
Γͨ͘ͳ͍ʂ
ͬͱָʹɾɾɾ
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4QSJOH%*ͷ߹
@Component
class GasolineEngine {
...
}
@ComponentScan
class MyApp {
public static void main(String[] args) {
...
}
}
class Car {
@Autowired
private Engine engine;
public Car() {
}
...
}
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4QSJOH%*ͷ߹
@Component
class GasolineEngine {
...
}
@ComponentScan
class MyApp {
public static void main(String[] args) {
...
}
}
class Car {
@Autowired
private Engine engine;
public Car() {
}
...
}
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4QSJOH%*ͷ߹
@Component
class GasolineEngine {
...
}
@ComponentScan
class MyApp {
public static void main(String[] args) {
...
}
}
class Car {
@Autowired
private Engine engine;
public Car() {
}
...
}
Ξϊςʔγϣϯ͚ͭΔ
͚ͩͰOFXͯ͠ϑΟʔϧυʹηο
τͯ͘͠ΕΔ
ʹ͍͢͝
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͜Μͳ;͏ʹ
%*ͯ͘͠ΕΔࠇຐज़
ʹ͍ΘΏΔz%*ίϯςφz
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৽͍͠%*ίϯςφʹ
ग़ձͬͨΒ
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৽͍͠%*ίϯςφʹ
ग़ձͬͨΒ
ͲΜͳهड़ͰউखʹOFXͯ͘͠ΕΔ͔ΛΖ͏ʂ
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৽͍͠%*ίϯςφʹ
ग़ձͬͨΒ
ͲΜͳهड़ͰউखʹOFXͯ͘͠ΕΔ͔ΛΖ͏ʂ
ͲΜͳهड़Ͱউखʹೖͯ͘͠ΕΔ͔ΛΖ͏ʂ
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৽͍͠%*ίϯςφʹ
ग़ձͬͨΒ
ͲΜͳهड़ͰউखʹOFXͯ͘͠ΕΔ͔ΛΖ͏ʂ
ͲΜͳهड़Ͱউखʹೖͯ͘͠ΕΔ͔ΛΖ͏ʂ
ͲΜͳϧʔϧͰɺΠϯελϯεͱೖઌ͕ඥ͚ͮ
ΒΕΔ͔ΛΖ͏ʂ
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4QSJOH%*ͷ߹
@Component(“engine”)
class GasolineEngine implements Engine {
...
}
class Car {
@Autowired
private Engine engine;
public Car() {
}
...
}
@Component(“old_engine”)
class DieselEngine implements Engine {
...
}
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4QSJOH%*ͷ߹
@Component(“engine”)
class GasolineEngine implements Engine {
...
}
class Car {
@Autowired
private Engine engine;
public Car() {
}
...
}
@Component(“old_engine”)
class DieselEngine implements Engine {
...
}
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ΞδΣϯμ
%*Λz֮͑Δz
%*Λzղ͘z
·ͱΊ
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·ͱΊ
%*z͍ํಉ͚ͩ͡Ͳಈ͖͕ҧ͏Πϯελϯ
εzΛ֎͔Βೖͯ͠εοΩϦͤ͞Δ͜ͱɻ͋ͱ
શ෦ͦͷԆઢ্ɻ
%*ίϯςφɺͪΐͬͱ໋ྩ͢Ε%*ͯ͘͠Ε
Δศརͳͭɻ
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͓·͚
z%*ίϯςφzͱ͍͏ݴ༿Λ
಄ʹམͱ͢ίπ
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͜͏͡Όͳͯ͘
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͜͏
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Ͱɺ͜͏
ΦϒδΣΫτ
Πϯελϯε
γϯάϧτϯ
औΓଗ͑ͯ·͢ʂ
ΦʔμʔϝΠυ
ঝΓ·͢ʂ
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TBJLPV LPKJTBJLJ
͓ΘΓ