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https://issues.apache.org/jira/browse/SOLR-9665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15592120#comment-15592120
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Luke P Warwick commented on SOLR-9665:
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The desire is to have dynamic ordering since the values are dynamic. The
examples I gave were just small subsets of much larger lists of values.
Attributes like Size and Brand can actually have 100s or even 1000s of values
and there are always new values being added (and old values dropping off) so
manually maintaining a list would be very cumbersome.
For smaller,fixed lists the EnumField probably will work though. Thanks David.
> Facet Values Sort Order: Add 3rd choice: Numeric Sort
> -----------------------------------------------------
>
> Key: SOLR-9665
> URL: https://issues.apache.org/jira/browse/SOLR-9665
> Project: Solr
> Issue Type: New Feature
> Security Level: Public(Default Security Level. Issues are Public)
> Components: faceting
> Reporter: Luke P Warwick
>
> As a person, I need facet values to be in predictable, intuitive spots so
> that I can quickly and easily find the values that are appropriate to me.
> Problem Statement: Today Solr has two default facet sort orders, neither of
> which provides predictable, intuitive facet value orders for people when the
> values start with numbers.
> Goal: Address the problem where index sorts facet values how a computer would
> rather than how a human would. This is very problematic for E-commerce
> facets like 'size' and 'tire width'
> Acceptance Criteria:
> 1. Sorts facet values numerically from lowest to highest
> 2. Works with both numeric and string fields (thus working on values that
> include letters... 25 mm, 30 waist, 32 Waist, 4 Petite)
> 3. If facet values don't start with a number, they are sorted alphabetically,
> after all values that do start with a number
> 4. If facet values are equal numerically, sort the numerically equal values
> alphabetically. Example: 10,10 Petite,10 Tall,12, Petite, 12 Tall
> 5. Integers and Floats are supported (even if string field)
> Examples:
> Women's Pants Sizes:
> 8
> 8 Tall
> 10
> 10 Petite
> 10 Tall
> 12
> 12 Tall
> 14 Petite
> 26 Waist
> 28 Waist
> 30 Waist
> One Size
> Bike Wheel Sizes:
> 20 Inches
> 24 Inches
> 26 Inches
> 27 Inches
> 27.5 Inches
> 27.5+ Inches
> 29 Inches
> 650c
> 700c
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