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From "Rick Hillegas (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DERBY-6402) Investigate using the Java 8 java.util.stream.Collector interface for user-defined aggregates
Date Mon, 04 Nov 2013 13:32:21 GMT
Rick Hillegas created DERBY-6402:
------------------------------------

             Summary: Investigate using the Java 8 java.util.stream.Collector interface for
user-defined aggregates
                 Key: DERBY-6402
                 URL: https://issues.apache.org/jira/browse/DERBY-6402
             Project: Derby
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 10.11.0.0
            Reporter: Rick Hillegas


Java 8 introduces a parallel aggregation interface: http://download.java.net/jdk8/docs/api/java/util/stream/Collector.html.
We should investigate how we can use this interface to help developers write user-defined
aggregates. It may also help us improve the throughput of Derby aggregation in general.



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