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Posted to dev@metamodel.apache.org by "ASF GitHub Bot (JIRA)" <ji...@apache.org> on 2015/08/18 21:57:48 UTC

[jira] [Commented] (METAMODEL-178) Make FunctionType an interface to enable addition of non-aggregate/scalar functions

    [ https://issues.apache.org/jira/browse/METAMODEL-178?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14701878#comment-14701878 ] 

ASF GitHub Bot commented on METAMODEL-178:
------------------------------------------

Github user kaspersorensen commented on the pull request:

    https://github.com/apache/metamodel/pull/34#issuecomment-132332638
  
    I also added METAMODEL-178 which this fixes.


> Make FunctionType an interface to enable addition of non-aggregate/scalar functions
> -----------------------------------------------------------------------------------
>
>                 Key: METAMODEL-178
>                 URL: https://issues.apache.org/jira/browse/METAMODEL-178
>             Project: Apache MetaModel
>          Issue Type: Improvement
>            Reporter: Kasper Sørensen
>            Assignee: Alberto Rodriguez
>
> To unlock the addition of scalar functions such as described by METAMODEL-165 we need to change FunctionType to not be an enum but to be an interface with a sub-interface called AggregateFunction. Another subinterface called ScalarFunction could then denote functions to be applied on each record (as opposed to aggregate functions which are applied on a set of values).



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