}
String[] sortFields = sortByString.split(",");
SortSpecifier[] sortSpecifiers = new SortSpecifier[sortFields.length];
for (int i = 0; i < sortFields.length; i++) {
String sortField = sortFields[i];
SortDirection sortDirection = SortDirection.ASCENDING;
if(sortField.startsWith("-")) {
sortDirection = SortDirection.DESCENDING;
sortField = sortField.substring(1, sortField.length());
}
sortSpecifiers[i] = new SortSpecifier(sortField, sortDirection);