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Posted to jira@arrow.apache.org by "Rick Zamora (Jira)" <ji...@apache.org> on 2021/09/23 13:31:00 UTC

[jira] [Commented] (ARROW-9672) [Python][Parquet] Expose _filters_to_expression

    [ https://issues.apache.org/jira/browse/ARROW-9672?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17419212#comment-17419212 ] 

Rick Zamora commented on ARROW-9672:
------------------------------------

>Alternatively, we could also accept the DNF-like lists of tuples in the pyarrow.dataset functions and methods, so that external projects like dask and cudf don't have to convert this to a pyarrow Expression themselves.

I'd personally like to see this solution realized - However, we are certainly felxible on the Dask & RAPIDS side.

> [Python][Parquet] Expose _filters_to_expression
> -----------------------------------------------
>
>                 Key: ARROW-9672
>                 URL: https://issues.apache.org/jira/browse/ARROW-9672
>             Project: Apache Arrow
>          Issue Type: Wish
>          Components: Python
>            Reporter: Caleb Winston
>            Priority: Trivial
>             Fix For: 6.0.0
>
>
> `_filters_to_expression` converts filters expressed in disjunctive normal form (DNF) to `dataset.Expression`. Can `_filters_to_expression` be added to the public API?



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