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Timo Walther commented on FLINK-9219: ------------------------------------- Maybe we should ask on the Calcite ML why the {{bind()}} is protected, the constructor is private and the other bind method is private as well. Maybe we can still influence the design decisions there. I think it would be great to expose a Flink-specific type that just implements interfaces of Calcite. So that we can ensure backwards-compatibility in the future even if Calcite's types changes. Exposing a type with a package {{org.apache.calcite.runtime.GeoFunctions.Geom}} does not look like good design to me. We should definitely separate the functions from the regular API as much as possible. I don't know if we need a switch for that. But we could add it via {{TableConfig}}. > 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 & 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, > ST_Z > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005)