public override bool LessThan(object a, object b)
{
TermModel modle = (TermModel)a;
TermModel modle2 = (TermModel)b;
return(modle.Count < modle2.Count);
}
/// <summary>
/// 查找指定字段Term
/// </summary>
/// <param name="field"></param>
/// <param name="text"></param>
/// <param name="current"></param>
/// <returns></returns>
public TermModel FindTerm(string field, string text, bool current)
{
TermEnum enum2 = open.Reader.Terms();
if (enum2.SkipTo(new Term(field, text))) {
TermModel modle2 = null;
while ((!current && enum2.Next() && field.Equals(enum2.Term().Field()))
|| current) {
modle2 = new TermModel(enum2.Term(), enum2.DocFreq());
break;
}
enum2.Close();
return modle2;
}
return null;
}
/// <summary>
/// 查找指定数目的Term
/// </summary>
/// <param name="num"></param>
/// <returns></returns>
public TermModel[] FindTerms(int num)
{
num++;
TermInfoQueue queue = new TermInfoQueue(num);
TermEnum enum2 = open.Reader.Terms();
int count = 0;
while (enum2.Next()) {
string str = enum2.Term().Field();
if ((currentField != null) && (!str.Equals(currentField))) {
continue;
}
if (enum2.DocFreq() > count) {
queue.Put(new TermModel(enum2.Term(), enum2.DocFreq()));
if (queue.Size() < num) {
continue;
}
queue.Pop();
count = ((TermModel)queue.Top()).Count;
}
}
enum2.Close();
TermModel[] modleArray = new TermModel[queue.Size()];
for (int i = 0; i < modleArray.Length; i++) {
modleArray[(modleArray.Length - i) - 1] = (TermModel)queue.Pop();
}
return modleArray;
}