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Session: Querying: How to use Lucene

Lucene flavored syntax can be used with the whereLucene() method, a part of the filtering methods available in IDocumentQuery.


{CODE:nodejs lucene_1@client-api\session\querying\documentQuery\howToUseLucene.js /}

fieldName string Name of a field in an index (default field)
whereClause string Lucene-syntax based clause
exact boolean (optional, default false) Match exact


{CODE-TABS} {CODE-TAB:nodejs:Node.js lucene_2@client-api\session\querying\documentQuery\howToUseLucene.js /} {CODE-TAB-BLOCK:sql:RQL} from Companies where lucene(name, 'bistro') {CODE-TAB-BLOCK/} {CODE-TABS/}

Advanced Usage

The fieldName argument corresponds to Lucene's default field convention. It is mandatory to pass it to the whereLucene() but the whereClause can contain clause that omits the field entirely giving you the opportunity to pass a complex expression e.g. .whereLucene("name", "name:bistro OR phone:981-443655"). It is advised to use this approach against Static Index where all fields are known, because there is no guarantee that a proper Auto Index will be created or used.

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