XQuery/Compare two XML files

Motivation You want to compare two XML files. If the files are the same you want to return a true and if not you want to return a false. Note if you want to see the differences see the ../XML Differences example. Method We will use the xdiff:compare() function that comes built in to eXist. To use this you pass two nodes to the compare function: xdiff:compare($node1 as node(), $node2 as node()) Sample Source Code Assume you have two different XML files xquery version "1.0"; import module namespace xdiff="http://exist-db.org/xquery/xmldiff" at "java:org.exist.xquery.modules.xmldiff.XmlDiffModule"; let $doc1 := '/db/apps/xml-diffs/data/diff1.xml' let $doc2 := '/db/apps/xml-diffs/data/diff2.xml' return <results> <result>diff of 1,1: {xdiff:compare(doc($doc1), doc($doc1))}</result> <result>diff of 1,2: {xdiff:compare(doc($doc1), doc($doc2))}</result> <result>diff of 2,2: {xdiff:compare(doc($doc2), doc($doc2))}</result> </results> The result will be: <syntaxhighlight lang="xml"> diff of 1,1: true diff of 1,2: false diff of 2,2: true </source >