Next Prev Up Top Contents Index

15.1.3 Advise loops

An advise loop instructs the server to inform the client when data in the server's application changes. Advise loops are set up across a conversation, and closing the conversation closes the advise loop.

An advise loop is identified by an item and a key. The key is included to allow any number of uniquely identifiable advise loops to be set up on the same server/topic/item combination.

A successfully established advise loop is also known as a link. When a change occurs to item, the link informs the client by causing it to execute a function.

There are two types of link: the warm link which only informs the client that a change to item has occurred, and the hot link which also sends the new data across.


LispWorks User Guide - 18 Feb 2003

Next Prev Up Top Contents Index