[GitHub] [activemq-artemis] gtully commented on a change in pull request #3978: ARTEMIS-3708 Collapse key transformer into policy

[GitBox <gi...@apache.org>]

gtully commented on a change in pull request #3978:
URL: https://github.com/apache/activemq-artemis/pull/3978#discussion_r831313193



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File path: docs/user-manual/en/connection-routers.md
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@@ -172,15 +167,23 @@ Let's take a look at some connection router examples from broker.xml:
 </connection-routers>
 ```
 
+## Key values
+The key value is retrieved from the incoming client connection.
+If the incoming client connection has no value for the key type used, the key value is set to the special string `NULL`.
+If the incoming client connection has a value for the key type used, the key value retrieved can be sequentially manipulated using a `key-filter` and a `policy`.
+If it is defined a `key-filter` and it matches the key value it is set to the value subsequence matched otherwise it is set to the special string `NULL`.

Review comment:
       If a key-filter is defined....




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