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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