This article walks through the process of migrating an eXist application from using old-style fields to using the new, Lucene-based facets and fields. For more information, see the eXist documentation's Lucene article.
In the old-style approach to fields, fields were constructed and maintained manually via the ft:index()
function. To add or update fields for a document, a <doc>
element containing <field>
elements was passed to this function, along with the URI of the resource to be indexed.
For example, in one application, fields were constructed with in the hsa/modules/index.xq
library module, whose index:index-one-document()
function constructed the <field>
elements and passed them to the ft:index()
function: