CERN -> IPT Group -> FrameMaker at CERN
	Information Service User's Guide

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Subscribing to the IS repository

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Introduction

IS allows applications to subscribe for the content of the IS repository. An application can subscribe for an individual information by providing the information name and function which will be called when this information is changed. It is possible to subscribe for the information which is not yet in the IS repository. In this case the first notification will be send to the subscriber when the information is created.

Another possibility is to subscribe for a number of informations by providing a a special object of the type ISCriteria as subscription parameter. In this case the subscribed application will receive notification for all the information objects whose names satisfy this criteria. The following sections shows how to do such subscriptions using the C++ IS API.