2.0 RC1

A level B extension for working with catalogues is proposed. A Catalogue contains information about the kind of data a server has to offer. An (identifiable) Catalogue can be published in the new CataloguePublication. It has an optional name and contains CatalogueItems. Each item has an index number and contains information about which kind of data could be delivered by the server (names of identifiable classes) and (optionally) on which locations the data may be referenced. The Catalogue design is intentionally simple to satisfy the basic needs of such a feature without making it too difficult for a server to work with it. The proposal is driven by the OTS 2 project where it is a goal to transport DATEX II data using the OTS 2 protocol. The CataloguePublication is used so a server can offer its data in one or more Catalogues, sub-divided into CatalogueItems. A client then can subscribe to some of these items referencing the (identifiable) Catalogue and the CatalogueItem index numbers. This is intended to be used in OTS 2 protocol for subscriptions to SituationPublications and ElaboratedDataPublications. The full EA Model file and XML Schema which incorporate the proposed new CataloguePublication as an extension are downloadable below. There is also a separate xmi export file containing the Extension package.

This is an initial draft of a proposed level B extension for a new VMS publication. It allows current information relating to Variable Message Signs which are deployed across the road network to be published without having to be associated with a Situation.

It is intended that the structures used in this proposal are made reusable which will allow them to replace the SignSetting sub-model within the current SituationPublication.

Where enumerations overlap with existing enumerations in the current model a prefix of "VmsExt" has been added to the enumeration name. This prefix would of course be removed if/when this proposal is incorporated into the level A model and replaces the current SignSetting structure.

The full EA Model file and XML Schema which incorporate the proposed new VMS Publication into the Level A model are downloadable below. Also the separate xmi export file just containing the Extension package is made available for download.