[jira] [Created] (CASSANDRA-9745) Allow validating values through a UDF

["Sylvain Lebresne (JIRA)" <ji...@apache.org>]

Sylvain Lebresne created CASSANDRA-9745:
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             Summary: Allow validating values through a UDF
                 Key: CASSANDRA-9745
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9745
             Project: Cassandra
          Issue Type: New Feature
            Reporter: Sylvain Lebresne
            Priority: Minor
             Fix For: 3.x


The only server side validation we do for values is currently that they match their type. Now that we have UDFs, we could allow to optionally specify a (boolean) value validation function on a per-column basis. This would give us a pretty generic way of validating value, which sounds useful to me.

Once we have that, we could even add some syntactic sugar for some common type of validations, like {{v int[0..100]}} for numbers between 0 and 100, or {{v text[20]}} for a string that is not longer than 20, ... That's more of a follow up however.



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