Simple example of requesting items from the SRU gateway at the Library of Congress

loc-sru.xqy

xquery version "3.0";

(: Look ups records at the Library of Congress in the specified metadata format :)

declare namespace mods = "http://www.loc.gov/mods/v3";
declare namespace dc = "http://purl.org/dc/elements/1.1/";
declare namespace marcxml = "http://www.loc.gov/MARC21/slim";
declare namespace zs = "http://www.loc.gov/zing/srw/";

(: change the lccn for different items :)
let $lccn := "2011005881"

(: change the requested format for different kinds of metadata - "dc", "marcxml", or "mods":)
let $metadata-format := "mods"

let $search := fn:concat("http://z3950.loc.gov:7090/voyager?operation=searchRetrieve&recordSchema=", $metadata-format, "&version=1.1&recordPacking=xml&query=bath.lccn=", $lccn, "&maximumRecords=1")

let $metadata := http:send-request(<http:request method='get' href="{$search}"/>)
return $metadata//zs:recordData/*

Copy and paste into BaseX. Try experimenting with different lccn's and metadata formats.