| 摘要 |
An apparatus and a system may include a plurality of filter stages including at least two of an event filter stage, a subscription filter stage, and a subscriber filter stage. They may also include a subscriber capable of being communicatively coupled to a managed object via the plurality of filter stages, wherein the managed object is associated with a notification of an event capable of propagating through the plurality of filter stages to the subscriber. An article may include data, which, when accessed, results in a machine performing a method including detecting the occurrence of an event associated with a change in a managed object and propagating a notification of the event to a subscriber through a plurality of filter stages.
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