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https://issues.apache.org/jira/browse/CALCITE-4294?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17599712#comment-17599712
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Julian Hyde commented on CALCITE-4294:
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[~bchapuis], I have logged CALCITE-5262 for the remaining work; assign it to
yourself if you are able to work on it.
> Use JTS rather than ESRI as the underlying library for geospatial (ST_)
> functions
> ---------------------------------------------------------------------------------
>
> Key: CALCITE-4294
> URL: https://issues.apache.org/jira/browse/CALCITE-4294
> Project: Calcite
> Issue Type: Bug
> Components: spatial
> Reporter: Julian Hyde
> Assignee: Bertil Chapuis
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.32.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The geospatial functions are currently implemented using the ESRI library. We
> should consider using JTS instead. AT the time we started work on geospatial
> the JTS did not have a suitable license, but this is no longer the case. I
> gather that JTS is a superior library.
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