https://github.com/daejoon/custom-repository

https://github.com/daejoon/custom-repository

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• Host: GitHub
• URL: https://github.com/daejoon/custom-repository
• Owner: daejoon
• Created: 2024-03-25T04:33:03.000Z (over 2 years ago)
• Default Branch: master
• Last Pushed: 2024-09-08T06:04:32.000Z (almost 2 years ago)
• Last Synced: 2024-09-09T06:52:34.012Z (almost 2 years ago)
• Language: Java
• Size: 51.8 KB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Custom Repository

https://docs.spring.io/spring-data/jpa/reference/repositories/custom-implementations.html

Spring Data JPA와 Custom Repository를 Fragment 형식으로 복합적으로 사용할수 있다.

관습적으로 Custom Repository에 @Component, @Repository를 붙이는데 Bean을 선언하지 않아도

Spring Boot에서 Bean으로 등록해준다.

```java

class RepositoryBeanDefinitionBuilder {

...

    private void potentiallyRegisterFragmentImplementation(RepositoryConfiguration> repositoryConfiguration,

                                                           RepositoryFragmentConfiguration fragmentConfiguration) {

        String beanName = fragmentConfiguration.getImplementationBeanName();

        // Already a bean configured?

        if (registry.containsBeanDefinition(beanName)) {

            if (logger.isDebugEnabled()) {

                logger.debug(String.format("Repository fragment implementation already registered: %s", beanName));

            }

            return;

        }

        fragmentConfiguration.getBeanDefinition().ifPresent(bd -> {

            if (logger.isDebugEnabled()) {

                logger.debug(String.format("Registering repository fragment implementation: %s %s", beanName,

                                           fragmentConfiguration.getClassName()));

            }

            bd.setSource(repositoryConfiguration.getSource());

            registry.registerBeanDefinition(beanName, bd);

        });

    }

...

}

```

## Custom Repository

* @Repository @Component를 붙이지 않아도 자동으로 Bean로 생성된다.

* 명시적으로 빈으로 선언하면 중복되지 않고 선언되는 형식으로(이름 변경 가능) 빈이 생성된다.