seq = xquery.execute("//product[stock > 400]", null, AccessContext.TEST);
assertEquals(seq.getItemCount(), ITEMS_TO_APPEND);
seq = xquery.execute("//product[stock &= '401']", null, AccessContext.TEST);
assertEquals(seq.getItemCount(), 1);
System.out.println(serializer.serialize((NodeValue) seq.itemAt(0)));
query =
"declare option exist:output-size-limit '-1';\n" +
"for $prod in //product return\n" +
" update value $prod/@num\n" +