US 6,275,957 B1 · Using query language for provider and subscriber registrations

Abstract

Systems and methods for reporting the occurrence of events in a computer system to event subscriber software. A computer system includes a central repository wherein event subscribers register the types or classes of events for which they require notification and event providers register the types or classes of events they are capable of detecting and for which they will provide notifications. The registrations, both by providers and subscribers, are made according to a standardized hierarchical classification of event classes and are preferably expressed in the form of queries. The computer system also includes an event-filtering component that receives notification of the occurrence of events, filters the events, and reports selected events to the subscriber software. The event-filtering component can expose standardized interfaces to the event providers that report events and to the subscriber software to which events are reported. Filtering can be facilitated by event-filtering definitions written in a query language and associated with the subscriber software. The definitions are processed in the context of an object-oriented, hierarchical classification of event classes that comprehend any possible events that can be reported by the event providers. When reported events satisfy one or more query-based filtering definitions, the events are passed to the appropriate subscriber software. Otherwise, the events are discarded. Events can be filtered and grouped according to the time of their occurrence. Filtering can be further simplified by registering event-reporting definitions defining the scope of events to be reported by particular event providers.

Claims12

Dependent claims

In a computer system having one or more event providers capable of detecting the occurrence of certain conditions or events in said computer system or the environment of said computer system and having one or more event subscribers requiring notification of certain conditions or events in said computer system or the environment of said computer system, a method for providing an interface between said event providers and said event subscribers comprising:

the step of defining a hierarchical classification of events that comprehend a set of possible conditions and events;
the step of providing to the computer system an event filtering and reporting component;
the step of registering with said event filtering and reporting component (a) an event provider definition associated with each event provider, wherein the event provider definition is expressed in terms of said hierarchical classification of events and specifies the conditions or events of which such event provider will provide notification to the event filtering and reporting component and (b) an event subscriber definition associated with each said event subscriber, wherein the event subscriber definition is expressed in terms of said hierarchical classification of events and specifies the conditions or events for which such event subscriber requests notification from the event filtering and reporting component;
the step of filtering, by the event filtering and reporting component, conditions or events reported by the event providers to the event filtering and reporting component;
and
the step of notifying each said event subscriber of only those conditions or events that satisfy the event subscriber definition associated with that event subscriber.

3 more elements

In a computer system having one or more event providers capable of detecting the occurrence of certain conditions or events in said computer system or the environment of said computer system and having one or more event subscribers requiring notification of certain conditions or events in said computer system or the environment of said computer system, a system for providing an interface between said event providers and said event subscribers comprising:

means for defining a hierarchical classification of events that comprehend a set of possible conditions and events;
means, logically connected to said event providers and said event subscribers, for filtering conditions or events detected by said event providers and for reporting certain conditions or events to said event subscribers;
and
means for registering with said event filtering and reporting means (a) an event provider definition associated with each event provider, wherein the event provider definition is expressed in terms of said hierarchical classification of events and specifies the conditions or events of which such event provider will provide notification to the event filtering and reporting means and (b) an event subscriber definition associated with each said event subscriber, wherein the event subscriber definition is expressed in terms of said hierarchical classification of events and specifies the conditions or events for which such event subscriber requests notification from the event filtering and reporting means, and
wherein said event filtering and reporting means filters the conditions or events reported by the event providers and notifies each said event subscriber of only those conditions or events that satisfy the event subscriber definition associated with that event subscriber.

2 more elements

An article of manufacture for use in a computer system having a CPU, one or more event providers capable of detecting the occurrence of certain conditions or events in said computer system or the environment of said computer system, and having one or more event subscribers requiring notification of certain conditions or events in said computer system or the environment of said computer system, the article of manufacture comprising:

program storage means, accessible by the CPU, for storing and providing to a CPU program code means, said program code means comprising:
means for defining a hierarchical classification of events that comprehend a set of possible conditions and events;
means, logically connected to said event providers and said event subscribers, for filtering conditions or events detected by said event providers and for reporting certain conditions or events to said event subscribers;
and
means for registering with said event filtering and reporting means (a) an event provider definition associated with each event provider, wherein the event provider definition is expressed in terms of said hierarchical classification of events and specifies the conditions or events of which such event provider will provide notification to the event filtering and reporting means and (b) an event subscriber definition associated with each said event subscriber, wherein the event subscriber definition is expressed in terms of said hierarchical classification of events and specifies the conditions or events for which such event subscriber requests notification from the event filtering and reporting means, and
wherein said event filtering and reporting means filters the conditions or events reported by the event providers and notifies each said event subscriber of only those conditions or events that satisfy the event subscriber definition associated with that event subscriber.

3 more elements

Dependencies are inferred from the claim text.

Using query language for provider and subscriber registrations

Life of this patent

Using query language for provider and subscriber registrations

Life of this patent

Abstract

Claims12