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https://issues.apache.org/jira/browse/SOLR-2898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13180565#comment-13180565
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Mark Desira commented on SOLR-2898:
-----------------------------------
Hi I am new to SOLR and was looking for (what seems to be) the function/patch
in question.
My scenario is this:
ID ProductName ProductCategory Colour
---------------------------------------------------
1 BatmanTShirt T-Shirt Black
2 BatmanTShirt T-Shirt Blu
3 SupermanTShirt T-Shirt Blue
4 SpidermanTrousers Trousers Red
5 SpidermanTrousers Trousers Black
If I use the usual faceting (on ProductCategory) in SOLR, I would get the
following results:
T-Shirt (3)
Trousers (2)
However what I want the facets to look like is the following:
T-Shirt (2)
Trousers (1)
Meaning that I don't want the colour to generate (3) counts for T-Shirt and (2)
counts for Trousers.
I know that I can 'normalize' the document to hold multi-valued field for the
colours however that would complicate my system a bit because I have other
fields (such as 'Price' and 'Size') to include in the multi-valued field.
What I would like to do is to sort of GROUP BY ProductName and ProductCategory,
this would 'flatten' the rows to just 3; (2) for T-Shirt and (1) for Trousers;
and then I apply the facet, resulting in what I require.
>From what I'm understanding, this patch would work great for me am I right?
If so, could you point me to some tutorial on how can I apply this patch?
Thanks.
> Support grouped faceting
> ------------------------
>
> Key: SOLR-2898
> URL: https://issues.apache.org/jira/browse/SOLR-2898
> Project: Solr
> Issue Type: New Feature
> Reporter: Martijn van Groningen
> Attachments: SOLR-2898.patch
>
>
> Support grouped faceting. As described in LUCENE-3097 (matrix counts).
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