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   | Information Service User's Guide |   |
T his chapter describes how an application can send command to a particular IS information provider.
Any application, which publishes at least one information object in the IS is considered as an Information Provider. IS provides a possibility to send commands to Information Providers by any application. In order to do this an application has to read the information object, published in the IS by the corresponding Provider, and call the sendCommand method of that object.
The IS commands facility is not an alternative for the general control commands. It must be used only to control the IS information flow. For example an application may ask a particular information provider to increase the frequency of information updates or to republish a particular information. For the moment there are no standard commands defined in the IS. An IS command is simply a character string, which is formed by a particular command sender and can be interpreted by a particular information providers. Therefore the ability of the correct command interpretation is a subject of an agreement between certain information providers and command senders. An information provider should just ignore the commands, which it is not able to interpret.| 2 July 1998 - WebMaster | Copyright © CERN 1998 |