public List<Advert> SearchAds(string query)
{
if (_searcher == null) return null;
ICollection fields = _searcher.Reader.GetFieldNames(IndexReader.FieldOption.ALL);
List<string> fldList = new List<string>();
foreach (DictionaryEntry f in fields)
{
fldList.Add(f.Key.ToString());
}
List<Advert> adverts = new List<Advert>();
MultiFieldQueryParser parser = new MultiFieldQueryParser(fldList.ToArray(), _analyzer);
Query q = parser.Parse(query);
Hits hits = _searcher.Search(q);
PropertyDescriptors desc = new PropertyDescriptors();
desc.LoadData(System.Windows.Forms.Application.StartupPath + "\\PropertyDescriptors.xml");
for (int i = 0; i < hits.Length(); i++)
{
Advert ad = new Advert();
Document doc = hits.Doc(i);
foreach (Field f in doc.Fields())
{
string temp = desc.GetDisplayableFormat(f.Name(), f.StringValue());
ad[f.Name()] = temp;
}
adverts.Add(ad);
}
return adverts;
}
private void ExtractAds(string contents)
{
if (contents.Trim() == string.Empty) return;
const string STARTAD = "<<STARTAD>>";
const string ENDAD = "<<ENDAD>>";
int startindex = 0;
int endindex = 0;
while (startindex != -1)
{
startindex = contents.IndexOf("<<STARTAD>>", endindex + ENDAD.Length);
endindex = contents.IndexOf("<<ENDAD>>", startindex + STARTAD.Length);
if (startindex <= endindex)
{
string ad = contents.Substring(startindex + STARTAD.Length, endindex - startindex);
string[] lines = ad.Split("\r\n".ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
Advert advert = new Advert();
foreach (string s in lines)
{
string st = s.Trim();
if (st == string.Empty) continue;
string[] tokens = st.Split(":".ToCharArray(), 2);
//Debug.Assert(tokens.Length < 2);
if (tokens.Length < 2)
{
continue;
}
if (tokens[1].Trim() == string.Empty)
{
continue;
}
advert[tokens[0]] = tokens[1];
}
_adverts.Add(advert);
}
}
}