[jira] [Updated] (CASSANDRA-11295) Make custom filtering more extensible via custom classes

["Sam Tunnicliffe (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-11295?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sam Tunnicliffe updated CASSANDRA-11295:
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    Status: Patch Available  (was: Open)

> Make custom filtering more extensible via custom classes 
> ---------------------------------------------------------
>
>                 Key: CASSANDRA-11295
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-11295
>             Project: Cassandra
>          Issue Type: Improvement
>          Components: Local Write-Read Paths
>            Reporter: Sam Tunnicliffe
>            Assignee: Sam Tunnicliffe
>            Priority: Minor
>             Fix For: 3.x
>
>
> At the moment, the implementation of {{RowFilter.CustomExpression}} is tightly bound to the syntax designed to support non-CQL search syntax for custom 2i implementations. It might be interesting to decouple the two things by making the custom expression implementation and serialization a bit more pluggable. This would allow users to add their own custom expression implementations to experiment with custom filtering strategies without having to patch the C* source. As a minimally invasive first step, custom expressions could be added programmatically via {{QueryHandler}}. Further down the line, if this proves useful and we can figure out some reasonable syntax we could think about adding the capability in CQL in a separate ticket. 



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