[jira] [Assigned] (ORC-620) Modify the row filter API to use BiFunction

["Owen O'Malley (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ORC-620?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Owen O'Malley reassigned ORC-620:
---------------------------------


> Modify the row filter API to use BiFunction
> -------------------------------------------
>
>                 Key: ORC-620
>                 URL: https://issues.apache.org/jira/browse/ORC-620
>             Project: ORC
>          Issue Type: Bug
>            Reporter: Owen O'Malley
>            Assignee: Owen O'Malley
>            Priority: Major
>
> The current API for row filtering has a couple of issues:
>  * The filter function is passed a VectorizedRowBatch instead of a MutableFilterContext.
>  * The filter needs to know the precise location for the fields it needs out of the schema.
> I'd like to propose changing it from:
> {code:java}Consumer<VectorizedRowBatch>{code}
> to
> {code:java}BiFunction<ColumnVector[], MutableFilterContext, Boolean>{code}
> That has the advantage that the data that the function should read is explicitly passed to it and we remove the dependence on VectorizedRowBatch.



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