Solr - Suggest Component with 2 different field types

Question

Im having trouble finding a way how to have 2 differently structured fields in one suggest component. (https://cwiki.apache.org/confluence/display/solr/Suggester)

The goal is to have an autocomplete module with these fields.

• A field where StandardTokenizer is used example output: This is a title
• A field where a Custom tokenizer is used (Basically a regex to get a base domain of a full URL) example output: thisisatitle.com

Therefore the requesthandler containing the the suggestcomponent is able to show both strings in the results array: thisisatitle.com and This is a title

Things ive tried are:

• Multiple suggestcomponents

Ive googled and the only solution ive currently found is using shards as they allow for different schemas to be combined. To my mind that is rather ineffective as running 2 servers would be a waste of resources and also maintainability would suffer.

Any suggestions/workarounds are welcome.

Answer 1

To use multiple suggestion dictionaries (that can have different analyzers applied), you can use the "multiple dictionaries" configuration as shown in the documentation:

<searchComponent name="suggest" class="solr.SuggestComponent">
  <lst name="suggester">
    <str name="name">mySuggester</str>
    <str name="lookupImpl">FuzzyLookupFactory</str>     
    <str name="dictionaryImpl">DocumentDictionaryFactory</str>     
    <str name="field">cat</str>
    <str name="weightField">price</str>
    <str name="suggestAnalyzerFieldType">string</str>
  </lst>
  <lst name="suggester">
    <str name="name">altSuggester</str>
    <str name="dictionaryImpl">DocumentExpressionDictionaryFactory</str>
    <str name="lookupImpl">FuzzyLookupFactory</str>
    <str name="field">product_name</str>
    <str name="weightExpression">((price * 2) + ln(popularity))</str>
    <str name="sortField">weight</str>
    <str name="sortField">price</str>
    <str name="storeDir">suggest_fuzzy_doc_expr_dict</str>
    <str name="suggestAnalyzerFieldType">text_en</str>
  </lst> 
</searchComponent>