BeanDefinitionParser.NamespaceHandler for Spring Social provider modules to create configuration namespaces.ConnectionFactorys.SocialConfigurerAdapter.addConnectionFactories(ConnectionFactoryConfigurer, Environment).@Configuration class to have the Spring MVC
configuration defined in SocialConfiguration imported.UserIdSource that uniquely identifies the current user.SocialConfigurerAdapter.getUserIdSource().UsersConnectionRepository.SocialConfigurerAdapter.getUsersConnectionRepository(ConnectionFactoryLocator) that creates an in-memory repository.InMemoryUsersConnectionRepository bean and a request-scoped InMemoryConnectionRepository bean.JdbcUsersConnectionRepository bean and a request-scoped JdbcConnectionRepository bean.EnableSocial.@EnableWebMvc.SocialConfigurer with convenient default implementations of methods.NamespaceHandler for Spring Social