SensorSA service model considers service interfaces to be the unit of reusability on specification level whereby an interface is structured into operations. Operations access underlying data sets which are often related to attributes of features defined in application schemas according to the general feature model
Service types are specified in terms of one or more interfaces, whereby one interface may be attached to several service specifications. For instance, the meta-information of services, their so-called capabilities, is specified in a dedicated capabilities interface which is common to all SensorSA services. Supported service interfaces include:
| Basic Interface Types |
Enable a common architectural approach for all architecture services, e.g. for the capabilities of service instances
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| Annotation Service |
Relates textual terms to elements of an ontology (e.g. concepts, properties, instances).
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| Catalogue Service |
Ability to publish, query and retrieve descriptive information (metainformation) for resources of any type. Extends the OGC Catalogue Service by additional interfaces for catalogue cascade management and ontology-based query expansion.
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| Feature Access Service |
Selection, creation, update and deletion of features available in a service network. Corresponds to the OGC WFS but is extensible by schema mapping.
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| Identity Managementand Authentication Service |
Creates and maintains identities. Supports the management of groups (of identities) as a special kind of identity. Proves the genuineness of identities using a set of given credentials and issues session information.
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| Map and Diagram Service |
Enables geographic clients to interactively visualize geographic and statistical data in maps (such as the OGC Web Map Service) or diagrams.
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| Ontology Access Interface |
Supports the storage, retrieval, and deletion of ontologies as well as providing a high-level view on ontologies.
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| Policy Enforcement Service |
Handles authentication and sends authorisation requests to the Policy Decision Point for non-security enabled Web services.
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| Policy Management and Authorisation Service |
Provides a decision on whether some identity (e.g. a user or a service) is authorised to access a certain resource.
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| Profile Management Service |
Creates and maintains (user) profiles and their associations to identities.
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| User Management Service |
Creates and maintains subjects (users or software components) including groups (of principals) as a special kind of subjects.
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| Web Processing Service (WPS) |
Start, stop and result retrieval of information processes (e.g. statistical calculations).
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| Sensor Observation Service (SOS) |
Provides uniform access to observations from sensors and sensor systems that is consistent for all sensor types including remote, in-situ, fixed and mobile sensors.
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| Sensor Alert Service (SAS) |
Provides a means to register for and to receive sensor alert messages.
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| Sensor Planning Service (SPS) |
Provides a standard interface to task any kind of sensor to retrieve collection assets.
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| Web Notification Service (WNS) |
Service by which a client may conduct asynchronous dialogues (message interchanges) with one or more other services.
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| OASIS Web Service Notification interfaces |
Family of related interfaces that define a standard Web services approach to notification using a topic-based publish/subscribe pattern.
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