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From "Sylvain Lebresne (JIRA)" <>
Subject [jira] [Updated] (CASSANDRA-11295) Make custom filtering more extensible via custom classes
Date Fri, 04 Mar 2016 15:36:40 GMT


Sylvain Lebresne updated CASSANDRA-11295:
    Reviewer: Sylvain Lebresne

> Make custom filtering more extensible via custom classes 
> ---------------------------------------------------------
>                 Key: CASSANDRA-11295
>                 URL:
>             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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