Using regex in facet.contains Solr

Question

I have solr field stored as -

record1 --> colorDimension : "Purple|91"
record2 --> colorDimension : "Purple|974|91"
record3 --> colorDimension : "Purple|974"

I need to facet on this colorDimension Field in a way such that term contains "Purple" and number "91".

The result I am targeting is -

Purple|91 = 2

I was looking out for facet.contains but did not get any examples that uses regular expressions.

score 1 · Accepted Answer · answered Jan 15 '18 at 08:27

You should expand these while indexing, so that you have a token for Purple|91 and Purple|974 separately. Faceting is quick because it can count tokens, without having to run a regex against each one to find the actual value.

You'll probably have to do this in your code, since I don't think you can make the pattern regex tokenizer spit out multiple tokens for a given prefix / group.

score 0 · Answer 2 · answered Jan 15 '18 at 05:38

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Try using this pattern:

Purple\|(?:\d+\|)*91(?:\||$)

Demo

answered Jan 15 '18 at 05:38

Tim Biegeleisen

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do you have any clue about regex execution in facet.contains in solr? – Vibhav Singh Rohilla Jan 15 '18 at 07:57
@VibhavSinghRohilla Unfortunately I don't. I assumed that you already had some code with regex, and you only needed help finding a matching pattern. – Tim Biegeleisen Jan 15 '18 at 07:59
Hi @VibhavSinghRohilla, did you find a solution by your own ? I have the same problem. – vanessa Jul 24 '22 at 17:58

score 0 · Answer 3 · answered Jul 06 '22 at 11:59

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If you actually need to make use of regular expressions, there is a parameter facet.matches, which can be used to specify a regular expression to restrict the facet results

answered Jul 06 '22 at 11:59

Jan Rasehorn

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Using regex in facet.contains Solr

3 Answers3

Demo