/// <summary>
/// Use a different index as the spell checker index or re-open
/// the existing index if <code>spellIndex</code> is the same value
/// as given in the constructor.
/// </summary>
/// <param name="spellIndexDir">spellIndexDir the spell directory to use </param>
/// <throws>AlreadyClosedException if the Spellchecker is already closed</throws>
/// <throws>IOException if spellchecker can not open the directory</throws>
virtual public void SetSpellIndex(Directory spellIndexDir)
{
// this could be the same directory as the current spellIndex
// modifications to the directory should be synchronized
lock (modifyCurrentIndexLock)
{
EnsureOpen();
if (!IndexReader.IndexExists(spellIndexDir))
{
IndexWriter writer = new IndexWriter(spellIndexDir, null, true,
IndexWriter.MaxFieldLength.UNLIMITED);
writer.Close();
}
SwapSearcher(spellIndexDir);
}
}
/// <summary> Index a Dictionary</summary>
/// <param name="dict">the dictionary to index
/// </param>
/// <throws> IOException </throws>
public virtual void IndexDictionary(Dictionary dict)
{
IndexReader.Unlock(spellindex);
IndexWriter writer = new IndexWriter(spellindex, new WhitespaceAnalyzer(), !IndexReader.IndexExists(spellindex));
writer.SetMergeFactor(300);
writer.SetMaxBufferedDocs(150);
System.Collections.IEnumerator iter = dict.GetWordsIterator();
while (iter.MoveNext())
{
System.String word = (System.String)iter.Current;
int len = word.Length;
if (len < 3)
{
continue; // too short we bail but "too long" is fine...
}
if (this.Exist(word))
{
// if the word already exist in the gramindex
continue;
}
// ok index the word
Document doc = CreateDocument(word, GetMin(len), GetMax(len));
writer.AddDocument(doc);
}
// close writer
writer.Optimize();
writer.Close();
// close reader
reader.Close();
reader = null;
}
