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Posted to issues@arrow.apache.org by "Antoine Pitrou (JIRA)" <ji...@apache.org> on 2019/06/14 14:41:00 UTC

[jira] [Commented] (ARROW-5610) [Python] Define extension type API in Python to "receive" a foreign extension type

    [ https://issues.apache.org/jira/browse/ARROW-5610?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16864148#comment-16864148 ] 

Antoine Pitrou commented on ARROW-5610:
---------------------------------------

Is it the extension type that must be customized or just the array subclass?

> [Python] Define extension type API in Python to "receive" a foreign extension type
> ----------------------------------------------------------------------------------
>
>                 Key: ARROW-5610
>                 URL: https://issues.apache.org/jira/browse/ARROW-5610
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Python
>            Reporter: Wes McKinney
>            Priority: Major
>             Fix For: 0.14.0
>
>
> In work in ARROW-840, a static {{arrow.py_extension_type}} name is used. There will be cases where an extension type is coming from another programming language (e.g. Java), so it would be useful to be able to "plug in" a Python extension type subclass that will be used to deserialize the extension type coming over the wire. This has some different API requirements since the serialized representation of the type will not have knowledge of Python pickling, etc. 



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