public int CompareTo(object obj)
{
IndexTerm i = obj as IndexTerm;
if (i == null)
{
return(-1);
}
// sort descending on frequency
if (i.Frequency > this.frequency)
{
return(1);
}
return(-1);
}
public static List<IndexTerm> GetIndexTerms(int siteId, int minFrequency, int maxFrequency)
{
List<IndexTerm> indexTerms = new List<IndexTerm>();
using (Lucene.Net.Store.Directory searchDirectory = GetDirectory(siteId))
{
using (IndexReader reader = IndexReader.Open(searchDirectory, false))
{
Term contentsField = new Term("contents");
TermEnum terms = reader.Terms(contentsField);
while (terms.Next())
{
Term term = terms.Term;
int frequency = reader.DocFreq(term);
if (frequency >= minFrequency)
{
if ((maxFrequency == -1) ||(frequency <= maxFrequency)) // -1 is no maximum
{
IndexTerm t = new IndexTerm();
t.Term = term.Text;
t.Frequency = frequency;
indexTerms.Add(t);
}
}
}
}
}
indexTerms.Sort();
return indexTerms;
}
