我们正在做的一件事是支持集群的单例服务。
One of the things we are working on is support for clustered singleton services.
我们的目标是让用户能通过注解(annotation)和定制的SCA范围来指定集群的单例服务。
Our goal is to allow users to specify a clustered singleton using an annotation and custom SCA scope.
作为一个EJB，该单例可以访问标准的EJB中间件服务集——事务管理、安全、远程、依赖注入等等。
As an EJB, the Singleton has access to the standard set of EJB middleware services - transaction management, security, remoteing, dependency injection and so on.
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