<?xml version="1.0" encoding="UTF-8"?>
<collection xmlns="http://exist-db.org/collection-config/1.0">
    <index xmlns:db="http://docbook.org/ns/docbook" xmlns:xs="http://www.w3.org/2001/XMLSchema">
        <lucene>
            <text qname="db:article">
                <facet dimension="keyword" expression="db:info/db:keywordset/db:keyword"/>
                <field name="title" expression="db:info/db:title"/>
                <field name="author" expression="for $au in db:info/db:author string-join(($au/db:personname/db:firstname, $au/db:personname/db:surname), ' ')"/>
            </text>
        </lucene>
    </index>
</collection>