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Date: Thu, 12 Jun 2014 19:51:01 +0000 (UTC)
From: "Jonathan Ellis (JIRA)" <jira@apache.org>
To: commits@cassandra.apache.org
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Subject: [jira] [Created] (CASSANDRA-7395) Support for pure user-defined
 functions (UDF)
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Jonathan Ellis created CASSANDRA-7395:
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             Summary: Support for pure user-defined functions (UDF)
                 Key: CASSANDRA-7395
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7395
             Project: Cassandra
          Issue Type: New Feature
          Components: API, Core
            Reporter: Jonathan Ellis
             Fix For: 3.0


We have some tickets for various aspects of UDF (CASSANDRA-4914, CASSANDRA-5970, CASSANDRA-4998) but they all suffer from various degrees of ocean-boiling.

Let's start with something simple: allowing pure user-defined functions in the SELECT clause of a CQL query.  That's it.

By "pure" I mean, must depend only on the input parameters.  No side effects.  No exposure to C* internals.  Column values in, result out.  http://en.wikipedia.org/wiki/Pure_function


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