GpelAssignCopy copy = itr.next();
String query = copy.getFrom().xml().attributeValue(QUERY_STR);
XmlElement copyElmt = copy.getFrom().xml();
// remove if attribute is found earlier
if (null != query) {
copyElmt.removeAttribute(copyElmt.attribute(QUERY_STR));
copyElmt.setAttributeValue(QUERY_STR, "/" + extractDataType(query));
}
query = copy.getTo().xml().attributeValue(QUERY_STR);
XmlElement toElmt = copy.getTo().xml();