DeferredRepositoryInitializationListener is registered multiple times

[frederikz]

I'm using spring-data-jpa 3.3.0 with multiple data sources and entity managers and therefore I have multiple @EnableJpaRepositories annotations. I now wanted to change the bootstrap mode to DEFERRED but I get

java.lang.IllegalStateException: Could not register object [org.springframework.data.repository.config.DeferredRepositoryInitializationListener@7aae1170] under bean name 'org.springframework.data.repository.config.DeferredRepositoryInitializationListener': there is already object [org.springframework.data.repository.config.DeferredRepositoryInitializationListener@4ef5dd23] bound
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.registerSingleton(DefaultSingletonBeanRegistry.java:124)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.registerSingleton(DefaultListableBeanFactory.java:1188)
	at org.springframework.data.repository.config.RepositoryConfigurationDelegate.potentiallyLazifyRepositories(RepositoryConfigurationDelegate.java:276)
	at org.springframework.data.repository.config.RepositoryConfigurationDelegate.registerRepositoriesIn(RepositoryConfigurationDelegate.java:204)
	at org.springframework.data.repository.config.RepositoryBeanDefinitionRegistrarSupport.registerBeanDefinitions(RepositoryBeanDefinitionRegistrarSupport.java:94)
	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.lambda$loadBeanDefinitionsFromRegistrars$1(ConfigurationClassBeanDefinitionReader.java:376)
	at java.base/java.util.LinkedHashMap.forEach(LinkedHashMap.java:721)
	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsFromRegistrars(ConfigurationClassBeanDefinitionReader.java:375)
	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitionsForConfigurationClass(ConfigurationClassBeanDefinitionReader.java:148)
	at org.springframework.context.annotation.ConfigurationClassBeanDefinitionReader.loadBeanDefinitions(ConfigurationClassBeanDefinitionReader.java:120)
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:429)
	at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:290)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanDefinitionRegistryPostProcessors(PostProcessorRegistrationDelegate.java:349)
	at org.springframework.context.support.PostProcessorRegistrationDelegate.invokeBeanFactoryPostProcessors(PostProcessorRegistrationDelegate.java:118)
	at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:788)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:606)

as each time the @EnableJpaRepositories annotation is processed RepositoryConfigurationDelegate tries to register a DeferredRepositoryInitializationListener bean.

Only register DeferredRepositoryInitializationListener once.

[odrotbohm]

Good catch, on it!

[xeounxzxu]

@odrotbohm @mp911de Let's fix this!