文書の最初の子エレメントを取得します。
var dc = database.getAllDocuments();
if(dc.getDocumentCount() > 0) {
if(requestScope.i != null &&
requestScope.i >= 0 &&
requestScope.i < dc.getDocumentCount()) {
var ar = dc.getDocumentArray(requestScope.i + 1);
var doc = ar[i];
var dom = doc.getDOM();
var schema = dom.getDocumentElement();
var elem = schema.getFirstChild();
requestScope.y = elem.getStringValue();
} else {
requestScope.msg = "No such document";
}
} else {
requestScope.msg = "No documents in database";
}
<schema0>
<element0>foo</element0>
</schema0>