E (WMI)

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event class

A WMI class that event consumers can subscribe to by an event query. The class reports a specific type of occurrence. For example, the Win32_ProcessStopTrace class reports that a specific process has stopped.

event consumer

A recipient of notifications that report an occurrence of an event. An event consumer is either temporary or permanent.

event consumer provider

A provider that determines which permanent event consumer handles a given event. An event consumer provider is registered with WMI by an instance of __EventConsumerProviderRegistration, which contains a list of the logical consumer classes that the event consumer provider supports. An event consumer provider is a COM server that maps physical consumers to logical consumers. An event consumer provider supports the IWbemEventConsumerProvider interface and is a component of the permanent consumer architecture.

event filter

An instance of the __EventFilter system class that describes an event type and the conditions for delivering a notification. A consumer uses an event filter to register to receive notification of a specific type of event.

event provider

A WMI provider that monitors a source of events and notifies WMI when events occur. An event provider implements the IWbemProviderInit and IWbemEventProvider interfaces, and sometimes IWbemEventProviderQuerySink.

event query

A WMI Query Language statement that event consumers use to register to receive notification of specific events. An event provider uses an event query to register to generate notifications of specific events.

extension schema

The third layer of the CIM schema, which includes platform-specific extensions of the CIM schema such as Windows, UNIX, and Exchange Server. Also see common model and core model.

extrinsic event

An event notification from a provider. Most providers create an instance of an event class defined in the provider MOF files. An extrinsic event inherits from __ExtrinsicEvent. For example, the Event Log Provider defines the event class Win32_NTLogEvent. Also see intrinsic event.