ResourceManager Interface ResourceTermination Interface
6.2.1.3 EventMetadata Package
This package defines types classes that capture eventing metadata. The data is useful for discovering information relevant for publish subscribe systems. Primarily the definition of event types as well as event channels together with their relationships can be modeled and discovered see chapter 7. Figure 4: EventMetadata types Copyright © 2010 Open Geospatial Consortium, Inc. 21 The event metadata types with their properties are described in the following. Note: The XML Schema implementation of this package is provided in chapter 16, Annex D – Event Metadata .6.2.1.3.1 AdHocEventChannel Class
Represents an EventChannel that was created ad hoc as additional delivery target for a subscription. Other subscribers can explore existing ad hoc channels and which events they target via the filter statements and documentation and subscribe for the same events. Handling subscriptions that target the same events is thus made easier for both subscribers and the producer. Subscribers to this kind of channel should be aware that the channel may terminate any time because the underlying subscription may be terminated at any time. A given termination time is therefore only indicative. An AdHocEventChannel is an EventChannel and therefore inherits all properties that an EventChannel has. Table 7 – AdHocEventChannel Properties Property name Description Value filter Filter statement used by the subscription that created the ad-hoc channel. Type : Any Default: none Cardinality : [0..] terminationTime Time when the channel is set to automatically expire. This shall be the same as the termination time of the subscription that created the ad hoc channel. Note: the termination time - if given - is only indicative, as the underlying subscription may be terminated at any time. Type : TM_Instant Default: none Cardinality : [0..1]6.2.1.3.2 AggregationChannel Class
Represents a channel in which all events from the child channels are published as well. This makes it easier for clients to subscribe for a number of channels. An AggregationChannel is an EventChannel and therefore inherits all properties that an EventChannel has.Parts
» OWS-7 Event Architecture Engineering Report
» Scope OWS-7 Event Architecture Engineering Report
» Document contributor contact points
» Revision history OWS-7 Event Architecture Engineering Report
» Future work OWS-7 Event Architecture Engineering Report
» Foreword OWS-7 Event Architecture Engineering Report
» Abbreviated terms OWS-7 Event Architecture Engineering Report
» Resource Class ResourceWithLifetime Class
» ResourceManager Interface ResourceTermination Interface
» AdHocEventChannel Class AggregationChannel Class
» EventChannel Class EventChannelRelationship Class
» EventMetadata Class EventingInformation Class
» Endpoint Class EndpointDeliveryMetadata Class
» Filter Class Notification Class
» PausableSubscription Class Producer Package
» Producer Class Publication Class
» Registration Class Broker Package
» Resources Lifecycle Management Behavior Model
» Managing Subscriptions Behavior Model
» Handling a Pausable Subscription
» Demand Based Publishing Behavior Model
» Introduction Event Channels OWS-7 Event Architecture Engineering Report
» Publish Subscribe Requirements OWS-7 Event Architecture Engineering Report
» Introduction Realization of Publish Subscribe
» Requirements Mapping for WS-Notification
» Summary Realization of Publish Subscribe
» Introduction Event Metadata Example
» The Event Service Discovery Model The Event Service Discovery extension package
» Scenario 1: Find a Service providing Sensor Data that supports Comparison Filters
» Step 2: Scenario 2: Find a Service providing Aviation Data in a specified Area
» Sample Event Service objects Discovery challenges:
» Denial of service Security threats and vulnerabilities
» Message replay Security threats and vulnerabilities
» Message modification Security threats and vulnerabilities
» Spoof of identity Security threats and vulnerabilities
» Intermediary network devices Security threats and vulnerabilities
» Trojan horse type of attacks
» Authorization or access control
» Data confidentiality Security measures
» Data integrity Security measures
» Communication security Security measures
» Mapping security measures to threats
» Threat Mitigation in WS- Environment
» Threat Mitigation in RESTful Environment
» Reliability OWS-7 Event Architecture Engineering Report
» Boolean Result for Filter Statement
» Event Wrapper Potential Pitfalls
» Resolve Content Given By Reference
» Reference System Transformation Potential Pitfalls
» Filter Encoding XPath Filter Processing Languages
» Event Pattern Markup Language
» Spatial Filtering via Bounding Box
» Spatial Filtering of Events Using Dynamic Filter Properties
» Discovery of filter functionality
» Specifying events OWS-7 Event Architecture Engineering Report
» Geosynchronization OWS-7 Event Architecture Engineering Report
» Dynamic Sensor Tracking and Notification Aviation
» Introduction OGC service specifications related to the Event Architecture
» Foreign standards and specifications related to the Event Architecture
» SWE Common AIXM Information models
» Introduction Document object model
» Spatially enabled Common Alert Protocol
» Code lists Common Alert Protocol
» Resource references Other features Interoperability
» Geosynchronization Common Alert Protocol
» Filtering CAP messages Common Alert Protocol
» EDXL-DE Common Alert Protocol
» WXXM Resource Requirements Package
» Consumer Requirements Package Publish Subscribe Requirements Package
» Registrar Requirements Package Information models
» Brokered Publish Subscribe Requirements Package Registering Broker Requirements Package
» Aggregation Channel Requirements Package
» Ad Hoc Channel Requirements Package
» Pausable Provider Requirements Package Demand Based Publication Requirements Package
» CSW-ebRIM Extension Package for Event Service Discovery
» Additional Sample Queries for Event Service Discovery
» XML Schema for Event Metadata
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