Variable 'per' not in scope error in XQuery - xquery

Question

I am getting 'Variable 'per' not in scope error' error, when I tried to execute below code in Java.
String xq = "declare variable $per1 as document-node(element(*, xs:untyped)) := " +
"fn:parse-xml($per);" +
"declare variable $job1 as document-node(element(*, xs:untyped)) := fn:parse-xml($job);" +
"for $i in $per1//pimergednodes/Get__CompIntfc__CI_PERSONAL_DATAResponse,\n" +
" $j in $job1//jobmergednodes/Get__CompIntfc__CI_JOB_DATAResponse[PROP_EMPLID = $i/PROP_EMPLID]\n" +
"\n" +
" return\n" +
" <emp>\n" +
" {\n" +
" $i/PROP_EMPLID,\n" +
" $i/PROP_BIRTHDATE,\n" +
" <coll_names>\n" +
" {\n" +
" $i/COLL_NAME_TYPE_VW/COLL_NAMES\n" +
" }\n" +
" </coll_names>,\n" +
"\n" +
" $i/PROP_BIRTHDATE/COLL_NAME_TYPE_VW/PROP_FIRST_NAME,\n" +
" $j/COLL_JOB/PROP_DEPTID\n" +
"\n" +
" }\n" +
" </emp>";
XQDataSource xds = new oracle.xquery.xqj.OXQDataSource();
XQConnection conn = xds.getConnection();
XQPreparedExpression pEx = conn.prepareExpression(xq); ==> error raised in this call.
Can somebody help me in fixing this error.
Thanks In Advance,
Maviswa

Answer 1

You reference $per in fn:parse-xml($per), but your code doesn't define that variable anywhere. I see $per1, but no $per. I suspect you'll run into the same problem with $job.
For debugging, print out the xq string so you can see the XQuery by itself without all the Java string escaping, which just adds a lot of noise.