You are seeing these facet results because of the fieldType
for your productTaxonomyName field. The fieldType=text_en
settting is applying filtering, stemming, tokenization, etc. to the current field. You should store facet data with a fieldType=string
in addition to the one you are currently using and then facet against this new field.
<field name="productTaxonomyName" type="text_en" indexed="true" stored="true" multiValued="false" />
<field name="productTaxonomyName_facet" type="string" indexed="true" stored="false" multiValued="false" />
Then you can use a copyField directive to populate the new field:
<copyField src="productTaxonomyName" dest="productTaxonomyName_facet" />
Update your query to the following:
select?q=gold&rows=0&wt=json&indent=true&facet=true
&facet.query=gold&facet.field=productTaxonomyName_facet
For more details on this see the Facet Indexing section of Solr Faceting Overview.