protected String findSortField(
SearchParameters searchParameters,
ClosingIndexSearcher searcher,
String field,
Locale sortLocale) {
// find best field match
MLAnalysisMode analysisMode = getLuceneConfig().getDefaultMLSearchAnalysisMode();
HashSet<String> allowableLocales = new HashSet<String>();
for (Locale l : MLAnalysisMode.getLocales(analysisMode, sortLocale, false)) {
allowableLocales.add(l.toString());
}
String sortField = field;
for (Object current : searcher.getReader().getFieldNames(FieldOption.INDEXED)) {
String currentString = (String) current;
if (currentString.startsWith(field) && currentString.endsWith(".sort")) {
String fieldLocale =
currentString.substring(field.length() + 1, currentString.length() - 5);
if (allowableLocales.contains(fieldLocale)) {
if (fieldLocale.equals(sortLocale.toString())) {
sortField = currentString;
break;
} else if (sortLocale.toString().startsWith(fieldLocale)) {
if (sortField.equals(field) || (currentString.length() < sortField.length())) {
sortField = currentString;
}
} else if (fieldLocale.startsWith(sortLocale.toString())) {
if (sortField.equals(field) || (currentString.length() < sortField.length())) {
sortField = currentString;
}
}
}
}
}
return sortField;
}
public List<Pair<String, Integer>> getTopTerms(String field, int count) {
ClosingIndexSearcher searcher = null;
try {
LinkedList<Pair<String, Integer>> answer = new LinkedList<Pair<String, Integer>>();
searcher = getSearcher(indexer);
IndexReader reader = searcher.getIndexReader();
TermEnum terms = reader.terms(new Term(field, ""));
do {
Term term = terms.term();
if (term != null) {
if (!term.field().equals(field)) {
break;
}
int freq = terms.docFreq();
Pair<String, Integer> pair =
new Pair<String, Integer>(term.text(), Integer.valueOf(freq));
if (answer.size() < count) {
if (answer.size() == 0) {
answer.add(pair);
} else if (answer.get(answer.size() - 1).getSecond().compareTo(pair.getSecond()) >= 0) {
answer.add(pair);
} else {
for (ListIterator<Pair<String, Integer>> it = answer.listIterator();
it.hasNext(); /**/ ) {
Pair<String, Integer> test = it.next();
if (test.getSecond().compareTo(pair.getSecond()) < 0) {
it.previous();
it.add(pair);
break;
}
}
}
} else if (answer.get(count - 1).getSecond().compareTo(pair.getSecond()) < 0) {
for (ListIterator<Pair<String, Integer>> it = answer.listIterator();
it.hasNext(); /**/ ) {
Pair<String, Integer> test = it.next();
if (test.getSecond().compareTo(pair.getSecond()) < 0) {
it.previous();
it.add(pair);
break;
}
}
answer.removeLast();
} else {
// off the end
}
}
} while (terms.next());
terms.close();
return answer;
} catch (IOException e) {
throw new SearcherException(e);
} finally {
if (searcher != null) {
try {
searcher.close();
} catch (IOException e) {
throw new SearcherException(e);
}
}
}
}