public static void removeOtherFields(SolrDocument d, Set<String> fields) {
Collection<String> fieldNames = new HashSet<String>(d.getFieldNames());
for (String fieldName : fieldNames) {
// if field is not listed among fields, then delete it
if ((!fields.contains(fieldName)) && (!fieldName.equals("score"))) {
d.removeFields(fieldName);
}
}
}
