// 1) Load Table
// 2) Add items to index
// 3) Save Index
public void CreateIndex(string Name, string Directory, IDataReader reader, CultureInfo culture, string keyField, string textField)
{
int row = 0;
TextIndex index = new TextIndex(Name, culture);
index.IndexFolder = Directory;
index.Initialize();
while (reader.Read()) {
int key = (int)reader[keyField];
string text = (string)reader[textField];
index.AddPhrase(key, text);
row++;
if (OnRowInserted != null)
OnRowInserted(row);
}
index.SaveIndex();
}
/// <remarks>This method assumes a reader lock has already been acquired before calling this method</remarks>
private static TextIndex GetTextIndex(string catalog, CultureInfo culture)
{
string indexKey = catalog + culture.ToString();
if (Indexes.Keys.Contains(indexKey))
return Indexes[indexKey];
else {
// Load the index!
TextIndex index = new TextIndex(catalog, culture);
index.IndexFolder = DatabasePath;
index.Initialize();
index.LoadIndex();
LockCookie lc = readerLock.UpgradeToWriterLock(1000 * 60); // 60 seconds!
Indexes.Add(indexKey, index);
readerLock.DowngradeFromWriterLock(ref lc);
return index;
}
}