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Towards an ODP-compliant object definition language with QoS-support

Aagedal, Jan Øyvind

Interactive Distributed Multimedia Systems and Telecommunication Services, 1998, p.183-194 [Periódico revisado por pares]

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Título:
Towards an ODP-compliant object definition language with QoS-support
Autor: Aagedal, Jan Øyvind
Assuntos: Applied sciences ; Computer science; control theory; systems ; Computer systems and distributed systems. User interface ; Exact sciences and technology ; Multimedia Application ; Object Constraint Language ; Signal Interface ; Software ; Stream Interface ; Unify Modeling Language
É parte de: Interactive Distributed Multimedia Systems and Telecommunication Services, 1998, p.183-194
Descrição: This paper presents ODL-Q, an object definition language with QoS support. ODL-Q is based on TINA ODL and extended with a contractual QoS approach where OCL is used to specify the QoS characteristics an object provides and requires. OCL is a formal language included in UML to express side-effect-free constraints. The QoS specification is based on an event model with a dating function used to specify timing constraints. ODL-Q is a superset of OMG IDL, and it is ODP-compliant by its possibility for objects to have multiple interfaces, object bindings as first class objects, and stream and signal interfaces. It is also possible for operations to have pre- and post-conditions, to specify incoming and outgoing operations, and to specify invariants on interfaces and objects. ODL-Q is presented using a video application example.
Editor: Berlin, Heidelberg: Springer Berlin Heidelberg
Idioma: Inglês

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