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From "Jonathan Ellis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-7395) Support for pure user-defined functions (UDF)
Date Thu, 12 Jun 2014 19:51:01 GMT
Jonathan Ellis created CASSANDRA-7395:
-----------------------------------------

             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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