/// <summary>
/// This method loads a term dictionary from disk to memory
/// </summary>
public void loadTermDictionary()
{
string fileName;
mainTermDictionary = new ConcurrentDictionary <string, TermInfo>();
if (Properties.Settings.Default.stemmer)
{
fileName = Properties.Settings.Default.postingFiles + "\\TermDictionaryStemmer.bin";
}
else
{
fileName = Properties.Settings.Default.postingFiles + "\\TermDictionary.bin";
}
using (FileStream newFileStream = new FileStream(fileName, FileMode.Open))
{
BinaryReader br = new BinaryReader(newFileStream);
while (br.BaseStream.Position != br.BaseStream.Length)
{
string term = br.ReadString();
int df = br.ReadInt32();
int cf = br.ReadInt32();
long pointer = br.ReadInt64();
string continuing = br.ReadString();
mainTermDictionary[term] = new TermInfo();
mainTermDictionary[term].df = df;
mainTermDictionary[term].cf = cf;
mainTermDictionary[term].postingfilepointer = pointer;
string[] stringSeparators = new string[] { "&&&" };
string[] DocumentAndShowsArray = continuing.Split(stringSeparators, StringSplitOptions.RemoveEmptyEntries);
if (!(DocumentAndShowsArray.Length == 1 && DocumentAndShowsArray[0].Equals(" ")))
{
for (int i = 0; i < DocumentAndShowsArray.Count(); i = i + 2)
{
mainTermDictionary[term].completion[DocumentAndShowsArray[i]] = Int32.Parse(DocumentAndShowsArray[i + 1]);
}
}
else
{
mainTermDictionary[term].completion = new Dictionary <string, int>();
}
}
}
}
/// <summary>
/// This methods adds the terms from a temp dictionary generated from a single doc to a more larger temp dictionary conating all the
/// term from a single file(containing many documents).
/// </summary>
/// <param name="uniqueDictionary">a term dictionary from a single document</param>
public void addUniqueDicToMainDic(Dictionary <string, int> uniqueDictionary)
{
foreach (string term in uniqueDictionary.Keys)
{
TermInfo ti;
if (mainTermDictionary.TryGetValue(term, out ti))
{
ti.df++;
ti.cf += uniqueDictionary[term];
}
else
{
mainTermDictionary[term] = new TermInfo();
ti = mainTermDictionary[term];
ti.df++;
ti.cf += uniqueDictionary[term];
}
}
}
