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I want to configure my Solr search engine so I get an exact match for the search term I enter.
eg. 'taxes' should return documents with 'taxes' and not 'tax', 'taxation' etc.
Any help or tips would be appreciated.
489
Just do a phrase search by surrounding the search text with double quotes (field_name:"search text"). You can set the field-type of the field as "string"(class="solr. StrField") instead of "text"(class="solr. TextField") if you are going to do exact match search.
Phrase match: A simple way by which we can achieve exact matching in Solr is by using the default string type. It is exact phrase matching. the string is a useful type for facet where we search the index by using the text pulled from the index itself.
You can search for "solr" by loading the Admin UI Query tab, enter "solr" in the q param (replacing *:* , which matches all documents), and "Execute Query". See the Searching section below for more information. To index your own data, re-run the directory indexing command pointed to your own directory of documents.
I presume your field is a TextField, by default solr does a fuzzy search on this field. What you want is to set up your field as a string field and add no tokenizer then you'll get an exact match.
You can even combine the exact search with a fuzzy search and use DisMax to boost the relative weights.
Example (schema.xml) :
<field name="name" type="string" indexed="true" stored="false" required="true" /> <field name="nameString" type="string" indexed="true" stored="false" required="true" /> <copyField source="name" dest="nameString"/> Example (solrconfig.xml) :
<requestHandler name="accounts" class="solr.SearchHandler"> <lst name="defaults"> <str name="defType">dismax</str> <str name="qf"> nameString^10.0 name^5.0 description^1.0 </str> <str name="tie">0.1</str> </lst> </requestHandler> To turn off stemming in your schema.xml, you can define text field like this:
<types> <!-- other fields definition --> <fieldType name="text_no_stem" class="solr.TextField" omitNorms="false"> <analyzer> <tokenizer class="solr.StandardTokenizerFactory"/> <filter class="solr.StandardFilterFactory"/> <filter class="solr.LowerCaseFilterFactory"/> </analyzer> </fieldType> <!-- other fields definition --> </types> <fields> <!-- other fields definition --> <dynamicField name="*_nostem" type="text_no_stem" indexed="true" stored="true"/> <!-- other fields definition --> </fields> I'm using sunspot to integrate solr with Ruby on Rails. With this in the schema.xml I define my searchable block like this:
searchable do text(:wants, as: :wants_nostem) end If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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