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From "Timo Walther (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-9219) Add support for OpenGIS features in Table & SQL API
Date Wed, 25 Apr 2018 08:20:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-9219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16451852#comment-16451852

Timo Walther commented on FLINK-9219:

I don't know if it makes sense to expose a type {{org.apache.calcite.runtime.Geom}}. I think
we should create our own {{Geo}} type that just implements the {{Geom}} interface. I guess
this is the reason why {{bind()}} has a {{protected}} visibility and can be overwritten.

> Add support for OpenGIS features in Table & SQL API
> ---------------------------------------------------
>                 Key: FLINK-9219
>                 URL: https://issues.apache.org/jira/browse/FLINK-9219
>             Project: Flink
>          Issue Type: New Feature
>          Components: Table API &amp; SQL
>            Reporter: Timo Walther
>            Assignee: Xingcan Cui
>            Priority: Major
> CALCITE-1968 added core functionality for handling spatial/geographical/geometry data.
It should not be too hard to expose these features also in Flink's Table & SQL API. We
would need a new {{GEOMETRY}} data type and connect the function APIs.
> Right now the following functions are supported by Calcite:
> {code}
> ST_AsText, ST_AsWKT, ST_Boundary, ST_Buffer, ST_Contains, ST_ContainsProperly, ST_Crosses,
ST_Disjoint, ST_Distance, ST_DWithin, ST_Envelope, ST_EnvelopesIntersect, ST_Equals, ST_GeometryType,
ST_GeometryTypeCode, ST_GeomFromText, ST_Intersects, ST_Is3D, ST_LineFromText, ST_MakeLine,
ST_MakePoint, ST_MLineFromText, ST_MPointFromText, ST_MPolyFromText, ST_Overlaps, ST_Point,
ST_PointFromText, ST_PolyFromText, ST_SetSRID, ST_Touches, ST_Transform, ST_Union, ST_Within,
> {code}

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