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https://issues.apache.org/jira/browse/LUCY-329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16403849#comment-16403849
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Marvin Humphrey commented on LUCY-329:
--------------------------------------
My recollection is that the numeric types were never made public because they
could not be {{indexed}}. [Inverter will throw an
error|https://github.com/apache/lucy/blob/rel/v0.6.2/core/Lucy/Index/Inverter.c#L237]
if detects an indexed numeric type.
The reason for the limitation was a bottleneck in the indexing code where the
field value had to be a String. In think it was [here, in
Inverter.c|https://github.com/apache/lucy/blob/rel/v0.6.2/core/Lucy/Index/Inverter.c#L186].
I recall using numeric types in production but only for providing sortable
field values.
> Document numeric field types
> ----------------------------
>
> Key: LUCY-329
> URL: https://issues.apache.org/jira/browse/LUCY-329
> Project: Lucy
> Issue Type: Documentation
> Components: Plan
> Affects Versions: 0.7.0, 0.6.2
> Reporter: Nick Wellnhofer
> Priority: Minor
>
> Make the [NumericType
> classes|https://git1-us-west.apache.org/repos/asf?p=lucy.git;a=blob;f=core/Lucy/Plan/NumericType.cfh]
> public and maybe review and improve the documentation.
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