| 摘要 |
The invention relates to a communications manager for receiving publications and forwarding these publications on to parties who have subscribed to receive such publications. The communications manager is able to store a plurality of filter expressions independently of the process of registering subscriptions, with each filter expression being stored in an optimized format. Means are provided for permitting the optimized format of a stored filter expression to be referenced by a party wishing to receive publications filtered according to that filter expression and publications received can be parsed against the optimized filter expression in order to determine which publications should be forwarded on to the party concerned.
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