SpringはどうやってDIしているのか？ #jjug_ccc

Transcript

1. 4QSJOH͸
   Ͳ͏΍ͬͯ%*͍ͯ͠Δͷ͔ʁ
   
   ++6($$$GBMM
   CBUJ UXJUUFS!CBUJ@
   
   

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2. 4QSJOH$PSFͱ
   %*ίϯςφ
   

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3. ຊࢿྉͰ࢖༻͢Δ4QSJOU'SBNFXPSLͷόʔδϣϯ͸Ͱ͢
   3
   

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4. 4QSJOH$PSF5FDIOPMPHJFT
   • 4QSJOH'SBNFXPSLͷυΩϡϝϯτΛݟͯΈΔ
   • ʮᶙ$PSF5FDIOPMPHJFTʯ
   4
   

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5. 4QSJOH$PSF5FDIOPMPHJFT
   • 5IF*P$DPOUBJOFS
   • 3FTPVSDFT
   • 7BMJEBUJPO %BUB#JOEJOH BOE5ZQF$PODFSTJPO
   • 4QSJOH&YQSFTTJPO-BOHVBHF 4Q&-
   
   • "TQFDU0SJFOUFE1SPHSBNNJOHXJUI4QSJOH
   • 4QSJOH"01"1*T
   5
   

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6. 4QSJOH$PSF5FDIOPMPHJFT
   • 5IF*P$DPOUBJOFS
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   • "TQFDU0SJFOUFE1SPHSBNNJOHXJUI4QSJOH
   • 4QSJOH"01"1*T
   6
   今日話すのはここ
   

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7. 4QSJOHͷ%*
   7
   @Configuration
   @ComponentScan
   public class MyApp {
   public static void main(String[] args) {
   ApplicationContext c =
   new AnnotationConfigApplicationContext(MyApp.class);
   HelloWorldService helloWorldService =
   c.getBean(HelloWorldService.class);
   helloWorldService.helloWorld();
   }
   }
   

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8. @Configuration
   @ComponentScan
   public class MyApp {
   public static void main(String[] args) {
   ApplicationContext c =
   new AnnotationConfigApplicationContext(MyApp.class);
   HelloWorldService helloWorldService =
   c.getBean(HelloWorldService.class);
   helloWorldService.helloWorld();
   }
   }
   4QSJOHͷ%*
   8
   @Configurationアノテーションがついてるクラス
   がBeanの設定を行うクラス
   （Bean = Springの管理対象となるインスタンス）
   

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9. @Configuration
   @ComponentScan
   public class MyApp {
   public static void main(String[] args) {
   ApplicationContext c =
   new AnnotationConfigApplicationContext(MyApp.class);
   HelloWorldService helloWorldService =
   c.getBean(HelloWorldService.class);
   helloWorldService.helloWorld();
   }
   }
   4QSJOHͷ%*
   9
   @ComponentScanアノテーションをつ
   けると、同パッケージ配下からBean
   定義を探してくれる
   

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10. 10
    @Component
    public class PrintService {
    public void print(String s) {
    System.out.println(s);
    }
    }
    @Component
    public class HelloWorldService {
    private PrintService printService;
    @AutoWired
    public HelloWorldService(PrintService printService) {
    this.printService = printService;
    }
    public void helloWorld() {
    printService.print("Hello, World!");
    }
    }
    

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11. 11
    @Component
    public class PrintService {
    public void print(String s) {
    System.out.println(s);
    }
    }
    @Component
    public class HelloWorldService {
    private PrintService printService;
    @AutoWired
    public HelloWorldService(PrintService printService) {
    this.printService = printService;
    }
    public void helloWorld() {
    printService.print("Hello, World!");
    }
    }
    @Componentアノテーションがついて
    るとスキャンの対象となるBean定義
    @Controllerや@Serviceなども同じ
    

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12. 12
    @Component
    public class PrintService {
    public void print(String s) {
    System.out.println(s);
    }
    }
    @Component
    public class HelloWorldService {
    private PrintService printService;
    @AutoWired
    public HelloWorldService(PrintService printService) {
    this.printService = printService;
    }
    public void helloWorld() {
    printService.print("Hello, World!");
    }
    }
    @AutoWireアノテーションをつけると
    BeanをDIしてくれる
    

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13. 4QSJOHͷίʔυΛಡΜͰΈͨ
    

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14. 14
    • ͖ͬ͞ͷίʔυΛಡΜͰ͍͘
    MyApp#main
    @Configuration
    @ComponentScan
    public class MyApp {
    public static void main(String[] args) {
    ApplicationContext c =
    new AnnotationConfigApplicationContext(MyApp.class);
    HelloWorldService helloWorldService =
    c.getBean(HelloWorldService.class);
    helloWorldService.helloWorld();
    }
    }
    

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15. #FBOఆٛͷొ࿥
    

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16. @Configuration
    @ComponentScan
    public class MyApp {
    public static void main(String[] args) {
    ApplicationContext c =
    new AnnotationConfigApplicationContext(MyApp.class);
    HelloWorldService helloWorldService =
    c.getBean(HelloWorldService.class);
    helloWorldService.helloWorld();
    }
    }
    16
    MyApp#main
    コンストラクタにConfigurationアノ
    テーションがついてるクラスを渡す
    

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17. 17
    AnnotationConfigApplicationContext#new
    public AnnotationConfigApplicationContext(
    Class>... annotatedClasses) {
    this();
    register(annotatedClasses);
    refresh();
    }
    

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18. 18
    public AnnotationConfigApplicationContext(
    Class>... annotatedClasses) {
    this();
    register(annotatedClasses);
    refresh();
    }
    AnnotationConfigApplicationContext#new
    引数なしのコンストラクタを呼ぶ
    

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19. 19
    • ҎԼͷΠϯελϯεΛϑΟʔϧυʹอ࣋
    • "OOPUBUFE#FBO%FpOJUJPO3FBEFS
    • $MBTT1BUI#FBO%FpOJUJPO4DBOOFS
    AnnotationConfigApplicationContext#new
    public AnnotationConfigApplicationContext() {
    this.reader = new AnnotatedBeanDefinitionReader(this);
    this.scanner = new ClassPathBeanDefinitionScanner(this);
    }
    

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20. 20
    public AnnotationConfigApplicationContext(
    Class>... annotatedClasses) {
    this();
    register(annotatedClasses);
    refresh();
    }
    AnnotationConfigApplicationContext#new
    registerメソッドにClass
    を渡してる
    

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21. #FBOఆٛొ࿥ͷྲྀΕ
    21
    AnnotationConfig
    
    ApplicationContext
    registerメソッド
    

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22. #FBOఆٛొ࿥ͷྲྀΕ
    22
    AnnotationConfig
    
    ApplicationContext
    AnnotatedBean
    
    DefinitionReader
    registerメソッド
    

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23. 23
    BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒
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    ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ
    #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    

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24. 24
    BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒
    !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ
    "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ
    "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ
    ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ
    #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    Bean定義はBeanDefinitionで
    表現される
    

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25. 25
    BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒
    !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ
    "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ
    "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ
    ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ
    #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    ConditionalアノテーションとConditionイ
    ンタフェースでBean登録をスキップできる
    http://docs.spring.io/spring/docs/current/spring-framework-reference/
    htmlsingle/#beans-java-conditional
    

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26. 26
    BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒
    !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ
    "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ
    "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ
    ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ
    #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    今回はAnnotationBeanNameGeneratorに
    よって決められる。
    http://docs.spring.io/spring/docs/current/spring-framework-reference/
    htmlsingle/#beans-scanning-name-generator
    

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27. 27
    BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒
    !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ
    "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ
    "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ
    ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ
    #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    BeanDefinitionHolderはBean名と
    BeanDefinitionを保持する
    

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28. 28
    BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒
    !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ
    "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ
    "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ
    ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ
    #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    AnnotationScopeMetadataResolverで@Scope
    アノテーションのproxyModeを読み取る
    http://docs.spring.io/spring/docs/current/spring-framework-reference/
    htmlsingle/#beans-java-scoped-proxy
    

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29. 29
    BOOPUBUFE$MBTT͔Β"OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛੜ੒
    !$POEJUJPOBMΞϊςʔγϣϯͰ#FBOొ࿥ͷεΩοϓΛ൑ఆ
    "OOPUBUJPO#FBO/BNF(FOFSBUPSͰ#FBOͷ໊લΛܾΊΔ
    "OOPUBUFE(FOFSJD#FBO%FpOJUJPOΛ#FBO%FpOJUJPO)PMEFSͰแΉ
    ඞཁͰ͋Ε͹4DPQFE1SPYZʹؔ͢ΔॲཧΛ͢Δ
    #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    次はここを見ていく
    

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30. 30
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    BeanDefinitionReaderUtils.registerBeanDefinition(
    definitionHolder, this.registry);
    • #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    

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31. 31
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    BeanDefinitionReaderUtils.registerBeanDefinition(
    definitionHolder, this.registry);
    • #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    さっき作ったMyAppクラスのBean定義
    を保持するBeanDefinitionHolder
    

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32. 32
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    BeanDefinitionReaderUtils.registerBeanDefinition(
    definitionHolder, this.registry);
    • #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    this.registryって何？
    

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33. 33
    public AnnotationConfigApplicationContext() {
    this.reader = new AnnotatedBeanDefinitionReader(this);
    this.scanner = new ClassPathBeanDefinitionScanner(this);
    }
    AnnotationBeanDefinitionReaderの
    this.registryに、
    AnnotationConfigApplicationContextが
    代入される
    

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34. 34
    AnnotationConfigApplicationContext#new => #register
    => AnnotatedBeanDefinitionReader#register
    BeanDefinitionReaderUtils.registerBeanDefinition(
    definitionHolder, this.registry);
    • #FBO%FpOJUJPO3FBEFS6UJMTSFHJTUFS#FBO%FpOJUJPOʹॲཧΛҕৡ͢Δ
    this.registryは
    AnnotationConfigApplicationContext
    

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35. #FBOఆٛొ࿥ͷྲྀΕ
    35
    AnnotationConfig
    
    ApplicationContext
    AnnotatedBean
    
    DefinitionReader
    registerメソッド
    

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36. #FBOఆٛొ࿥ͷྲྀΕ
    36
    AnnotationConfig
    
    ApplicationContext
    AnnotatedBean
    
    DefinitionReader
    AnnotatedGeneric
    BeanDefinition
    
    Bean定義を表現するクラス
    

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37. #FBOఆٛొ࿥ͷྲྀΕ
    37
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    AnnotatedBean
    
    DefinitionReader
    AnnotatedGeneric
    BeanDefinition
    
    AnnotationConfigApplicationContextは
    BeanDefinitionRegistryのサブクラス
    

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38. #FBOఆٛొ࿥ͷྲྀΕ
    38
    AnnotationConfig
    
    ApplicationContext
    GenericApplication
    Context
    BeanDefinition
    
    Registry
    AnnotatedBean
    
    DefinitionReader
    AnnotatedGeneric
    BeanDefinition
    
    BeanDefinition
    
    ReaderUtils
    registerBeanDefinitionメソッド
    beanDefinitionHolderとregistryが引数
    

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39. 39
    …=> AnnotatedBeanDefinitionReader#register => #registerBean

    => BeanDefinitionReaderUtils#registerBeanDefinition
    String beanName = definitionHolder.getBeanName();
    registry.registerBeanDefinition(beanName,
    definitionHolder.getBeanDefinition());
    registryにBeanの名前と
    Bean定義を登録する
    

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40. ͭ·Γ
    40
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    AnnotatedBean
    
    DefinitionReader
    AnnotatedGeneric
    BeanDefinition
    
    1
    N
    BeanDefinitionReaderUtils
    経由で登録される
    BeanDefinitionR
    eaderUtils
    

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41. ͭ·Γ
    41
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    AnnotatedBean
    
    DefinitionReader
    AnnotatedGeneric
    BeanDefinition
    
    1
    N
    登録処理は
    registerBeanDefinitionメソッド
    BeanDefinitionR
    eaderUtils
    

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42. 42
    this.beanFactory.registerBeanDefinition(beanName, beanDefinition);
    …=> BeanDefinitionReaderUtils#registerBeanDefinition

    => GenericApplicationContext#registerBeanDefinition
    this.beanFactoryは、
    DefaultListableBeanFactoryインスタンスで
    初期化されている
    

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43. %FGBVMU-JTUBCMF#FBO'BDUPSZ
    

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44. %FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ
    44
    

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45. %FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ
    45
    

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46. ͭ·Γ
    46
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    AnnotatedBean
    
    DefinitionReader
    AnnotatedGeneric
    BeanDefinition
    
    1
    N
    BeanDefinitionR
    eaderUtils
    登録するのは
    registerBeanDefinitionメソッド
    

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47. ͭ·Γ
    47
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    AnnotatedBean
    
    DefinitionReader
    AnnotatedGeneric
    BeanDefinition
    
    1
    N
    DefaultListable
    
    BeanFactory
    registerBeanDefinitionメソッドに
    委譲
    BeanDefinitionR
    eaderUtils
    

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48. ͭ·Γ
    48
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    AnnotatedBean
    
    DefinitionReader
    AnnotatedGeneric
    BeanDefinition
    
    1
    N
    DefaultListable
    
    BeanFactory
    BeanDefinitionはインスタンス変数の
    ConcurrentHashMapに保存される
    BeanDefinitionR
    eaderUtils
    

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49. public AnnotationConfigApplicationContext(
    Class>... annotatedClasses) {
    this();
    register(annotatedClasses);
    refresh();
    }
    ͜͜·ͰΛ੔ཧ
    49
    • ͕͜͜ऴΘͬͨ
    • .Z"QQΫϥεͷ#FBOఆٛΛొ࿥ͨ͠
    

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50. ͜͜·ͰΛ੔ཧ
    50
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    AnnotatedBean
    
    DefinitionReader
    DefaultListable
    
    BeanFactory
    BeanDefinition
    
    ReaderUtils
    Class
    BeanDefinition
    Holder
    BeanDefinition
    Concurrent
    HashMap
    BeanDefinition
    BeanDefinition
    

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51. ࣍͸ίϯϙʔωϯτεΩϟϯ
    

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52. 52
    public AnnotationConfigApplicationContext(
    Class>... annotatedClasses) {
    this();
    register(annotatedClasses);
    refresh();
    }
    AnnotationConfigApplicationContext#new
    • ࣍͸ͬͪ͜
    • SFGSFTIϝιου͸਌ΫϥεͰ͋Δ"CTUSBDU"QQMJDBUJPO$POUFYUͰ࣮
    ૷͞Ε͍ͯΔ
    

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53. 53
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    

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54. 54
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    ログを出力したりインスタンス
    変数を初期化したり
    

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55. 55
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    さっきも出てきた
    DefaultListableBeanFactoryインスタンスに
    対していろいろ設定する
    

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56. %FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ
    56
    

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57. 57
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    次はここ
    

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58. 58
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    PostProcessorRegistrationDelegate
    に委譲する
    

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59. 59
    …=> AbstractApplicationContext#refresh
    => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors
    J #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZΛ࣮ߦ
    JJ #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ
    JJJ #FBO'BDUPSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ
    

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60. 60
    J #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZΛ࣮ߦ
    JJ #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛ࣮૷ͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ
    JJJ #FBO'BDUPSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ
    Springフレームワーク内部用？
    今回のケースだと実は
    ConfigurationClassPostProcessorが
    既に登録されている
    …=> AbstractApplicationContext#refresh
    => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors
    

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61. 61
    J #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZΛ࣮ߦ
    JJ #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ
    JJJ #FBO'BDUPSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ
    Springフレームワーク内部用？
    今回のケースだと実は
    ConfigurationClassPostProcessorが
    既に登録されている
    AnnotatedBeanDefinitionReaderのコンストラクタで
    AnnotationConfigUtils.registerAnnotationConfigP
    rocessorsを呼び出しBean定義を登録してる
    …=> AbstractApplicationContext#refresh
    => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors
    

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62. 62
    J #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZΛ࣮ߦ
    JJ #FBO%FpOJUJPO3FHJTUSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ
    JJJ #FBO'BDUPSZ1PTU1SPDFTTPSΛܧঝͨ͠Ϋϥεͷ
    QPTU1SPDFTT#FBO'BDUPSZΛ࣮ߦ
    自前のBeanFactoryPostProcessor
    今回は定義していない
    …=> AbstractApplicationContext#refresh
    => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors
    

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63. 63
    ͭ·Γࠓճͷέʔεͩͱ$POpHVSBUJPO$MBTT1PTU1SPDFTTPSͷ
    ᶃ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZ
    ᶄ QPTU1SPDFTT#FBO'BDUPSZ
    ͕࣮ߦ͞ΕΔɻ
    …=> AbstractApplicationContext#refresh
    => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors
    

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64. 64
    ͭ·Γࠓճͷέʔεͩͱ$POpHVSBUJPO$MBTT1PTU1SPDFTTPSͷ
    ᶃ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZ
    ᶄ QPTU1SPDFTT#FBO'BDUPSZ
    ͕࣮ߦ͞ΕΔɻコンポーネントスキャンしてBean定義
    を登録する
    …=> AbstractApplicationContext#refresh
    => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors
    

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65. ίϯϙʔωϯτεΩϟϯͷྲྀΕ
    65
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    DefaultListable
    
    BeanFactory
    

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66. ίϯϙʔωϯτεΩϟϯͷྲྀΕ
    66
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    DefaultListable
    
    BeanFactory
    ConfigurationClass
    
    PostProcessor
    BeanFactoryPostProcessor
    として呼び出される
    

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67. ίϯϙʔωϯτεΩϟϯͷྲྀΕ
    67
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    DefaultListable
    
    BeanFactory
    ConfigurationClass
    
    PostProcessor
    ClassPathScanningCandidate
    ComponentProvider
    ݺͼग़͠
    

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68. ίϯϙʔωϯτεΩϟϯͷྲྀΕ
    68
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinitionR
    egistry
    DefaultListable
    
    BeanFactory
    ConfigurationClassP
    ostProcessor
    .classϑΝΠϧ
    ClassPathScanningCandidate
    ComponentProvider
    ݺͼग़͠
    ୳͢
    PathMatchingResourcePatternResolver
    を使ってclassファイルを探す
    File#listFilesを使って探索する
    

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69. ίϯϙʔωϯτεΩϟϯͷྲྀΕ
    69
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinitionR
    egistry
    DefaultListable
    
    BeanFactory
    ConfigurationClassP
    ostProcessor
    .classϑΝΠϧ
    ClassPathScanningCandidate
    ComponentProvider
    ݺͼग़͠
    ୳͢&ղੳ
    ClassReaderと
    AnnotationMetadataReadingVisitorを使っ
    てclassファイルのバイトコードを解析する
    

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70. ίϯϙʔωϯτεΩϟϯͷྲྀΕ
    70
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    DefaultListable
    
    BeanFactory
    ConfigurationClass
    
    PostProcessor
    .classϑΝΠϧ
    ScannedBean
    Definition
    ClassPathScanningCandidate
    ComponentProvider
    ݺͼग़͠
    ୳͢&ղੳ
    ੜ੒
    Beanとなるクラスのみ
    

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71. ίϯϙʔωϯτεΩϟϯͷྲྀΕ
    71
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    BeanDefinition
    
    Registry
    DefaultListable
    
    BeanFactory
    ConfigurationClassP
    ostProcessor
    .classϑΝΠϧ
    ScannedBean
    Definition
    ClassPathScanningCandidate
    ComponentProvider
    ݺͼग़͠
    ୳͢&ղੳ
    ੜ੒
    1 N
    BeanDefinitionReaderUtilsに
    よって登録される
    最初のBean定義の登録と同じ
    

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72. 72
    ͭ·Γࠓճͷέʔεͩͱ$POpHVSBUJPO$MBTT1PTU1SPDFTTPSͷ
    ᶃ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZ
    ᶄ QPTU1SPDFTT#FBO'BDUPSZ
    ͕࣮ߦ͞ΕΔɻコンポーネントスキャンが終わった
    …=> AbstractApplicationContext#refresh
    => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors
    

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73. 73
    ͭ·Γࠓճͷέʔεͩͱ$POpHVSBUJPO$MBTT1PTU1SPDFTTPSͷ
    ᶃ QPTU1SPDFTT#FBO%FpOJUJPO3FHJTUSZ
    ᶄ QPTU1SPDFTT#FBO'BDUPSZ
    ͕࣮ߦ͞ΕΔɻ
    ConfigurationClassEnhancer#enhance
    でMyAppをCGLIBのサブクラス化
    AOPでプロキシ化する時にCGLIBを使う
    …=> AbstractApplicationContext#refresh
    => PostProcessorRegistrationDelegate#invokeBeanFactoryPostProcessors
    

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74. 74
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    終わり
    

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75. 75
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    PostProcessorRegistrationDelegateを
    使ってbeanFactoryに登録する
    http://docs.spring.io/spring/docs/current/spring-framework-
    reference/htmlsingle/#beans-factory-extension-bpp
    

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76. 76
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    メッセージの初期化
    http://docs.spring.io/spring/docs/current/spring-framework-
    reference/htmlsingle/#context-functionality-messagesource
    イベントリスナー
    http://docs.spring.io/spring/docs/current/spring-framework-
    reference/htmlsingle/#context-functionality-events
    

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77. ࣍͸#FBOΛੜ੒
    

    View Slide

78. 78
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    ४උ͢Δ
    #FBO'BDUPSZΛ४උ͢Δ
    #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
    #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
    ϝοηʔδͷॳظԽ΍ΠϕϯτϦεφʔͷొ࿥ͳͲ
    TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
    $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
    ここを見ていく
    

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79. 79
    AnnotationConfigApplicationContext#new
    => AbstractApplicationContext#refresh
    • TJOHMFUPOείʔϓͷ#FBOΛੜ੒
    finishBeanFactoryInitialization(beanFactory);
    beanFactory.preInstantiateSingletons();
    beanFactoryはDefaultListableBeanFactory
    

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80. 80
    • ͬ͘͟Γͱ͜Μͳײ͡
    • #FBO໊͔Β਌#FBOఆٛΛϚʔδͨ͠#FBO%FpOJUJPOΛऔಘ͢Δ
    IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMFCFBOT
    SFGFMFNFOU
    • ந৅ΫϥεͰ͸ͳ͘ɺTJOHMFUPOείʔϓͰɺ-B[Z*OJUͰ͸ͳ͍΋ͷʹ
    ରͯ͠HFU#FBOϝιουΛݺͿ
    IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMFCFBOT
    GBDUPSZMB[ZJOJU
    for (String beanName : this.beanDefinitionNames) {
    RootBeanDefinition bd = getMergedLocalBeanDefinition(beanName);
    if (!bd.isAbstract() && bd.isSingleton() && !bd.isLazyInit()) {
    getBean(beanName);
    }
    }
    

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81. "CTUSBDU#FBO'BDUPSZ
    HFU#FBO
    

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82. • #FBOఆٛͷEFQFOETPOଐੑΛղܾ
    IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMFCFBOT
    GBDUPSZEFQFOETPO
    String[] dependsOn = mbd.getDependsOn();
    if (dependsOn != null) {
    AbstractBeanFactory#getBean
    

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83. • #FBOΛੜ੒͢Δͱ͜Ζʂ
    • είʔϓʹԠͯ͡෼ذ
    • ࠓճ͸TJOHMFUPOείʔϓͷ৔߹Λݟ͍ͯ͘
    // Create bean instance.
    if (mbd.isSingleton()) {
    }
    else if (mbd.isPrototype()) {
    }
    else {
    }
    AbstractBeanFactory#getBean
    

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84. HFU#FBOͷྲྀΕ
    84
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListable
    
    BeanFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    getBeanメソッド
    

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85. HFU#FBOͷྲྀΕ
    85
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListable
    
    BeanFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    DefaultSingleton
    
    BeanRegistry
    getSingleton
    メソッド
    

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86. %FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ
    86
    

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87. 87
    DefaultSingletonBeanRegistry#getSingleton
    • TJOHMFUPOείʔϓͷ#FBOΛੜ੒ࡁΈ͔Ͳ͏͔Λௐ΂Δ
    • ੜ੒ࡁΈͷ৔߹͸ͦΕΛฦ͚ͩ͢
    synchronized (this.singletonObjects) {
    Object singletonObject = this.singletonObjects.get(beanName);
    if (singletonObject == null) {
    // Beanを生成する処理
    }
    return (singletonObject != NULL_OBJECT ? singletonObject : null);
    }
    

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88. HFU#FBOͷྲྀΕ
    88
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListable
    
    BeanFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    DefaultSingleton
    
    BeanRegistry
    getSingleton
    メソッド
    

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89. HFU#FBOͷྲྀΕ
    89
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListable
    
    BeanFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    DefaultSingleton
    
    BeanRegistry
    createBean
    メソッド
    

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90. %FGBVMU-JTUBCMF#FBO'BDUPSZͷܧঝ
    90
    

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91. 91
    AbstractAutowireCapableBeanFactory#createBean
    J #FBO%FpOJUJPOͱ#FBO໊͔Β#FBOͷ$MBTTΠϯελϯεΛऔಘ
    JJ $MBTTΠϯελϯε͔Β#FBOΛੜ੒
    • ίϯετϥΫλΠϯδΣΫγϣϯ
    JJJ ੜ੒ͨ͠#FBOʹରͯ͠ɺϑΟʔϧυɾηολʔΠϯδΣΫγϣϯ
    JW ੜ੒ͨ͠#FBOʹରͯ͠ɺ#FBO1PTU1SPDFTTPSͱJOJUNFUIPEͷॲཧ
    

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92. 92
    AbstractAutowireCapableBeanFactory#createBean
    J #FBO%FpOJUJPOͱ#FBO໊͔Β#FBOͷ$MBTTΠϯελϯεΛऔಘ
    JJ $MBTTΠϯελϯε͔Β#FBOΛੜ੒
    • ίϯετϥΫλΠϯδΣΫγϣϯ
    JJJ ੜ੒ͨ͠#FBOʹରͯ͠ɺϑΟʔϧυɾηολʔΠϯδΣΫγϣϯ
    JW ੜ੒ͨ͠#FBOʹରͯ͠ɺ#FBO1PTU1SPDFTTPSͱJOJUNFUIPEͷॲཧ
    

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93. HFU#FBOͷྲྀΕ
    93
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListable
    
    BeanFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    DefaultSingleton
    
    BeanRegistry
    createBean
    メソッド
    

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94. HFU#FBOͷྲྀΕ
    94
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListable
    
    BeanFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    DefaultSingleton
    
    BeanRegistry
    resolveBeanClass
    メソッド
    

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95. HFU#FBOͷྲྀΕ
    95
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListableB
    eanFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    DefaultSingleton
    
    BeanRegistry
    @ConfigurationのBean定義についてはClassイ
    ンスタンスを返すだけ
    コンポーネントスキャンしたBean定義について
    はClassインスタンスを生成する必要がある
    

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96. HFU#FBOͷྲྀΕ
    96
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListable
    
    BeanFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    DefaultSingleton
    
    BeanRegistry
    ClassLoaderインスタンス
    を保持してる
    

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97. HFU#FBOͷྲྀΕ
    97
    AnnotationConfig
    
    ApplicationContext
    Generic
    
    ApplicationContext
    DefaultListableBea
    nFactory
    Abstract
    
    BeanFactory
    AbstractAutowireCapable
    BeanFactory
    DefaultSingleton
    
    BeanRegistry
    ClassLoaderとBeanDefinitionが
    持つクラス名を引数で渡し、Class
    インスタンスを取得する
    ClassLoader#loadClass
    ClassUtils
    

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98. 98
    AbstractAutowireCapableBeanFactory#createBean
    J #FBO%FpOJUJPOͱ#FBO໊͔Β#FBOͷ$MBTTΠϯελϯεΛऔಘ
    JJ $MBTTΠϯελϯε͔Β#FBOΛੜ੒
    • ίϯετϥΫλΠϯδΣΫγϣϯ
    JJJ ੜ੒ͨ͠#FBOʹରͯ͠ɺϑΟʔϧυɾηολʔΠϯδΣΫγϣϯ
    JW ੜ੒ͨ͠#FBOʹରͯ͠ɺ#FBO1PTU1SPDFTTPSͱJOJUNFUIPEͷॲཧ
    

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99. 99
    @Component
    public class PrintService {
    public void print(String s) {
    System.out.println(s);
    }
    }
    @Component
    public class HelloWorldService {
    private PrintService printService;
    @AutoWired
    public HelloWorldService(PrintService printService) {
    this.printService = printService;
    }
    public void helloWorld() {
    printService.print("Hello, World!");
    }
    }
    

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100. 100
     AbstractAutowireCapableBeanFactory#createBean
     • ίϯετϥΫλҾ਺ͷ$POTUSVDUPSΠϯελϯεΛऔಘ͢Δ෦෼
     • ࠓճͷαϯϓϧͩͱ)FMMP8PSME4FSWJDFͷ#FBOఆٛʹରͯ͠ɺ
     1SJOU4FSWJDFΫϥεͷ$POTUSVDUPSΠϯελϯεΛऔಘ͢Δ
     • Ұ෦ͷ#FBO1PTU1SPDFTTPSΛ࢖༻ͯ͠औಘ͢Δ
     • 4NBSU*OTUBOUJBUJPO"XBSF#FBO1PTU1SPDFTTPSΛܧঝͨ͠
     #FBO1PTU1SPDFTTPS
     • ࠓճ͸"VUPXJSF"OOPUBUJPO#FBO1PTU1SPDFTTPS͕֘౰
     Constructor>[] ctors =
     determineConstructorsFromBeanPostProcessors(
     beanClass, beanName);
     

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101. 101
     AbstractAutowireCapableBeanFactory#createBean
     • #FBO%FpOJUJPOͱऔಘͨ͠$POTUSVDUPSΠϯελϯεΛ࢖ͬͯίϯε
     τϥΫλΠϯδΣΫγϣϯ͢Δ෦෼
     • ࠓճͷαϯϓϧͩͱɺҎԼΛ࢖ͬͯίϯετϥΫλΠϯδΣΫγϣ
     ϯ͢Δ
     • )FMMP8PSME4FSWJDFͷ#FBO%FpOJUJPO
     • 1SJOU4FSWJDFͷ$POTUSVDUPSΠϯελϯε
     new ConstructorResolver(this)
     .autowireConstructor(beanName, mbd, ctors, explicitArgs);
     

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102. 102
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     Constructor
     
     Resolver
     getBean ここがBean生成のスタート
     HelloWorldServiceのBeanを
     生成しようとしてる
     

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103. 103
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     Constructor
     
     Resolver
     getBean
     HelloWorldServiceにPrintService
     をコンストラクタインジェクショ
     ンをしようとしてるとこ
     

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104. 104
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     Constructor
     
     Resolver
     DefaultListable
     
     BeanFactory
     getBean
     PrintServiceのBeanを取得するた
     めにresolveDependencyメソッド
     を呼ぶ
     

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105. 105
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     Constructor
     
     Resolver
     DefaultListable
     
     BeanFactory
     getBean
     Bean生成のため再帰的に
     getBeanを呼ぶことになる
     

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106. 106
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     Constructor
     
     Resolver
     DefaultListable
     
     BeanFactory
     getBean
     PrintServiceのBeanが
     返ってくる
     

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107. 107
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     Constructor
     
     Resolver
     SimpleInstantiation
     
     Strategy
     DefaultListable
     
     BeanFactory
     BeanUtils
     getBean
     Constructor#newInstanceと
     PrintServiceのBeanを使って
     HelloWorldServiceのBeanを生成
     

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108. 108
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     Constructor
     
     Resolver
     SimpleInstantiation
     
     Strategy
     DefaultListable
     
     BeanFactory
     BeanUtils
     getBean
     Constructor#newInstanceと
     PrintServiceのBeanを使って
     HelloWorldServiceのBeanを生成
     コンストラクタインジェクション！
     

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109. 109
     AbstractAutowireCapableBeanFactory#createBean
     J #FBO%FpOJUJPOͱ#FBO໊͔Β#FBOͷ$MBTTΠϯελϯεΛऔಘ
     JJ $MBTTΠϯελϯε͔Β#FBOΛੜ੒
     • ίϯετϥΫλΠϯδΣΫγϣϯ
     JJJ ੜ੒ͨ͠#FBOʹରͯ͠ɺϑΟʔϧυɾηολʔΠϯδΣΫγϣϯ
     JW ੜ੒ͨ͠#FBOʹରͯ͠ɺ#FBO1PTU1SPDFTTPSͱJOJUNFUIPEͷॲཧ
     populateBeanメソッド
     内で実施してる
     initializeBeanメソッド
     内で実施してる
     

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110. HFU#FBOͷྲྀΕΛ੔ཧ
     110
     AnnotationConfig
     
     ApplicationContext
     Generic
     
     ApplicationContext
     DefaultListable
     
     BeanFactory
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     DefaultSingleton
     
     BeanRegistry
     createBean
     

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111. HFU#FBOͷྲྀΕΛ੔ཧ
     111
     AnnotationConfig
     
     ApplicationContext
     Generic
     
     ApplicationContext
     DefaultListable
     
     BeanFactory
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     DefaultSingleton
     
     BeanRegistry
     Beanの出来上がり！
     

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112. HFU#FBOͷྲྀΕΛ੔ཧ
     112
     AnnotationConfig
     
     ApplicationContext
     Generic
     
     ApplicationContext
     DefaultListable
     
     BeanFactory
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     DefaultSingleton
     
     BeanRegistry
     出来上がったBeanを後で使えるよう
     に取っておく
     

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113. HFU#FBOͷྲྀΕΛ੔ཧ
     113
     AnnotationConfig
     
     ApplicationContext
     Generic
     
     ApplicationContext
     DefaultListable
     
     BeanFactory
     Abstract
     
     BeanFactory
     AbstractAutowireCapable
     BeanFactory
     DefaultSingleton
     
     BeanRegistry
     getBeanメソッド終了！
     

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114. 114
     AnnotationConfigApplicationContext#new
     => AbstractApplicationContext#refresh
     ४උ͢Δ
     #FBO'BDUPSZΛ४උ͢Δ
     #FBO'BDUPSZ1PTU1SPDFTTPSΛݺͼग़͢
     #FBO1PTU1SPDFTTPSΛొ࿥͢Δ
     ͦͷଞ΋Ζ΋Ζ
     TJOHMFUPOείʔϓͷ#FBOΛੜ੒͢Δ
     $POUFYU3FGSFTIFE&WFOUͷൃߦͳͲ
     終わり
     

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115. 115
     public AnnotationConfigApplicationContext(
     Class>... annotatedClasses) {
     this();
     register(annotatedClasses);
     refresh();
     }
     AnnotationConfigApplicationContext#new
     • ͍ͭʹ"OOPUBUJPO$POpH"QQMJDBUJPO$POUFYUͷίϯετϥΫλ͕ऴ
     Θͬͨɾɾɾ
     

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116. @Configuration
     @ComponentScan
     public class MyApp {
     public static void main(String[] args) {
     ApplicationContext c =
     new AnnotationConfigApplicationContext(MyApp.class);
     HelloWorldService helloWorldService =
     c.getBean(HelloWorldService.class);
     helloWorldService.helloWorld();
     }
     }
     ࠷ॳͷίʔυ
     116
     • "QQMJDBUJPO$POUFYU׬੒ʂ
     

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117. @Configuration
     @ComponentScan
     public class MyApp {
     public static void main(String[] args) {
     ApplicationContext c =
     new AnnotationConfigApplicationContext(MyApp.class);
     HelloWorldService helloWorldService =
     c.getBean(HelloWorldService.class);
     helloWorldService.helloWorld();
     }
     }
     ࠷ॳͷίʔυ
     117
     • "QQMJDBUJPO$POUFYUͷHFU#FBO͸ɺ͖ͬ͞ग़͖ͯͨ
     "CTUSBDU#FBO'BDUPSZHFU#FBOΛݺΜͰΔ͚ͩ
     • ੜ੒ࡁΈͷTJOHMFUPOείʔϓͷ#FBOΛऔಘͰ͖Δ
     

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118. ;Γ͔͑ͬͯΈΔ
     

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119. • ;Γ͔͑ͬͯΈΔ
     • #FBOఆٛͷొ࿥
     • ίϯϙʔωϯτεΩϟϯ
     • #FBOੜ੒ʢίϯετϥΫλΠϯδΣΫγϣϯʣ
     119
     

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120. • #FBOఆٛͷొ࿥
     • "OOPUBUFE#FBO%FpOJUJPO3FBEFSͷίϯετϥΫλͰϑϨʔϜ
     ϫʔΫͰ࢖͏#FBOఆ͕ٛొ࿥͞ΕΔ
     • "OOPUBUFE#FBO%FpOJUJPO3FBEFSͰ!$POpHVSBUJPO͕͍ͭͯ
     ΔΫϥεͷ#FBOఆٛΛ#FBO%FpOJUJPOʹม׵͢Δ
     • #FBO%FpOJUJPO͕࠷ऴతʹอଘ͞ΕΔ৔ॴ͸ɺ
     %FGBVMU-JTUBCMF#FBO'BDUPSZͷΠϯελϯεม਺
     120
     

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121. • ίϯϙʔωϯτεΩϟϯ
     • $POpHVSBUJPO$MBTT1PTU1SPDFTTPSQPTU1SPDFTT#FBO%FpOJ
     UJPO3FHJTUSZ͔Β࢝·Δ
     • ʢ"OOPUBUFE#FBO%FpOJUJPO3FBEFSͷίϯετϥΫλͰ#FBO
     ొ࿥͞ΕͯΔʣ
     121
     

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122. • #FBOੜ੒ʢίϯετϥΫλΠϯδΣΫγϣϯʣ
     • "CTUSBDU#FBO'BDUPSZHFU#FBO͔Β࢝·Δ
     • "VUPXJSFE"OOPUBUJPO#FBO1PTU1SPDFTTPSͰίϯετϥΫλ
     ΠϯδΣΫγϣϯͷҾ਺Λղܾ
     • ʢ"OOPUBUFE#FBO%FpOJUJPO3FBEFSͷίϯετϥΫλͰ#FBO
     ొ࿥͞ΕͯΔʣ
     122
     

     View Slide

123. • #FBO%FpOJUJPO3FBEFS
     • #FBO%FpOJUJPOΛੜ੒
     • $POpHVSBUJPO$MBTT1PTU1SPDFTTPSΛొ࿥
     • "VUPXJSFE"OOPUBUJPO#FBO1PTU1SPDFTTPSΛొ࿥
     • %FGBVMU-JTUBCMF'BDUPSZ
     • #FBO%FpOJUJPOΛอ࣋
     • #FBOੜ੒
     123
     

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124. • ͋Εʁ
     • #FBO%FpOJUJPO3FBEFSͱ%FGBVMU-JTUBCMF#FBO'BDUPSZ͑͋͞Ε
     ͹ಈ͘Μ͡Όͳ͍ʁ
     • ʢ"QQMJDBUJPO$POUFYU͍Βͳ͘ͳ͍ʁʣ
     • ࣮ࡍɺࢼͯ͠ΈͨΒಈ͍ͨ
     124
     

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125. 125
     // 準備
     DefaultListableBeanFactory beanFactory =
     new DefaultListableBeanFactory();
     AnnotatedBeanDefinitionReader reader =
     new AnnotatedBeanDefinitionReader(beanFactory);
     // 明示的にaddBeanPostProcessorしないとAbstractBeanFactoryの
     // フラグ(hasInstantiationAwareBeanPostProcessors）が立たなかった
     beanFactory.addBeanPostProcessor(
     beanFactory.getBean(AutowiredAnnotationBeanPostProcessor.class));
     // Bean定義の登録
     reader.register(MyApp.class);
     // コンポーネントスキャン
     ConfigurationClassPostProcessor bpp =
     beanFactory.getBean(ConfigurationClassPostProcessor.class);
     bpp.setEnvironment(new StandardEnvironment());
     bpp.postProcessBeanDefinitionRegistry(beanFactory);
     // Beanの取得
     beanFactory.getBean(HelloWorldService.class).helloWorld();
     

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126. ;Γ͔͑ͬͯΈΔ
     126
     • %*ʹؔ͢ΔΞϨίϨΛ΍Δͷʹඞཁͳͷ͸ɺ#FBO'BDUPSZͱ
     #FBO%FpOJUJPO3FBEFSͩͬͨ
     • IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMF
     DPOUFYUJOUSPEVDUJPODUYWTCFBOGBDUPSZ
     • %FGBVMU-JTUBCMF#FBO'BDUPSZͷ࢓ࣄଟ͗͢ʂܧঝ͕ෳࡶʂ
     • ֤ΠϯλϑΣʔεͷ໾ׂΛͬ͘͟Γ೺Ѳ͢ΔͱಡΈ΍͘͢ͳΔ
     • ࢥͬͯͨΑΓ΋৭ʑͳػೳɺ֦ுϙΠϯτ͕ఏڙ͞Ε͍ͯͨ
     • ίʔυΛಡΜͩ͜ͱ͸ɺ͍͔ͭ໾ʹཱͭɾɾɾ͔΋ʂ
     

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127. ;Γ͔͑ͬͯΈΔ
     127
     • %*ʹؔ͢ΔΞϨίϨΛ΍Δͷʹඞཁͳͷ͸ɺ#FBO'BDUPSZͱ
     #FBO%FpOJUJPO3FBEFSͩͬͨ
     • IUUQEPDTTQSJOHJPTQSJOHEPDTDVSSFOUTQSJOHGSBNFXPSLSFGFSFODFIUNMTJOHMF
     DPOUFYUJOUSPEVDUJPODUYWTCFBOGBDUPSZ
     • %FGBVMU-JTUBCMF#FBO'BDUPSZͷ࢓ࣄଟ͗͢ʂܧঝ͕ෳࡶʂ
     • ֤ΠϯλϑΣʔεͷ໾ׂΛͬ͘͟Γ೺Ѳ͢ΔͱಡΈ΍͘͢ͳΔ
     • ࢥͬͯͨΑΓ΋৭ʑͳػೳɺ֦ுϙΠϯτ͕ఏڙ͞Ε͍ͯͨ
     • ίʔυΛಡΜͩ͜ͱ͸ɺ͍͔ͭ໾ʹཱͭɾɾɾ͔΋ʂ
     ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ
     

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