public static List<SolrQuery.SortClause> getSortClauses(String sortInfo) {
List<SolrQuery.SortClause> sortClauses = new ArrayList<SolrQuery.SortClause>();
if (sortInfo == null) {
sortClauses.add(SORT_CLAUSE);
} else {
for (String sortClauseData : sortInfo.split(SORT_FIELD_REQ_DELIM)) {
if (nullOrEmpty(sortClauseData)) continue;
Matcher m = SORT_PATTERN.matcher(sortClauseData);
if (m.matches()) {
sortClauses.add(new SolrQuery.SortClause(m.group(1), getSortOrder(m.group(2))));
}
}
}
return sortClauses;
}
public static List<String> getValidFieldNamesSubset(Collection<String> fieldNames) {
List<String> fieldNamesSubset = new ArrayList<String>();
for (String fieldName : fieldNames) {
if (!ignoreFieldName(fieldName, Arrays.asList(ID))) {
fieldNamesSubset.add(fieldName);
}
}
Collections.sort(fieldNamesSubset);
return fieldNamesSubset;
}
public static List<SolrQuery.SortClause> getSortClauses(String sortInfo, String sortOrder) {
if (sortInfo == null) {
return null;
}
if (sortOrder == null || sortInfo.contains(SORT_FIELD_REQ_DELIM)) {
return getSortClauses(sortInfo);
}
List<SolrQuery.SortClause> sortClauses = new ArrayList<SolrQuery.SortClause>();
sortClauses.add(new SolrQuery.SortClause(sortInfo, sortOrder));
return sortClauses;
}