public static void SearchWordOfQuery(string word, Query query)
{
lock (Quries)
{
string pathD;
string pathP;
if (!query.terms.ContainsKey(word))
{
TermOfQuery tq = new TermOfQuery(word);
query.terms.Add(word, tq);
if ((word[0] >= 'a') && (word[0] <= 'z'))
{
pathD = pathPost + "D" + word[0] + ".txt"; //create the name of the word's file
pathP = pathPost + "P" + word[0] + ".txt"; //create the name of the word's file
}
else
{
pathD = pathPost + "D" + "numAndRules.txt";
pathP = pathPost + "P" + "numAndRules.txt";
}
int numOfLine = GetInfoOfTerm(ref pathD, ref tq); //read the dictionary file
GetDocsOfTerm(ref pathP, ref tq, numOfLine); //read the posting file
}
else
{
query.terms[word].QFI++;
}
}
}
/// <summary>
/// get the posting details of the term
/// </summary>
/// <param name="path"></param>
/// <param name="word"></param>
/// <param name="numOfLine"></param>
private static void GetDocsOfTerm(ref string path, ref TermOfQuery word, int numOfLine)
{
int counter = 0; //counter of the line
try
{
using (Stream s = new FileStream(path, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(s))
{
while (br.BaseStream.Position != br.BaseStream.Length)
{
if (counter == numOfLine) //we get to the wanted line
{
string line = br.ReadString(); //read the line
//to check if can insert to file the object TERM
string[] details = line.Split(new char[] { '¥', '€', '|' }, StringSplitOptions.RemoveEmptyEntries); //split the docs details
//to check
for (int i = 1; i < details.Length; i += 2)
{
int num;
int.TryParse(details[i + 1], out num);
if (!word.DocsOfTerm.ContainsKey(details[i]))
{
word.DocsOfTerm.Add(details[i], num);
}
}
break;
}
else //move on to the next line
{
counter++;
}
}
}
}
}
catch (Exception e)
{
throw e;
}
}
/// <summary>
/// get the dic terms of all the files
/// </summary>
/// <param name="path"> path the path to the file</param>
private static int GetInfoOfTerm(ref string path, ref TermOfQuery word)
{
int numOfLine = 0;
try
{
using (Stream s = new FileStream(path, FileMode.Open))
{
using (BinaryReader br = new BinaryReader(s))
{
while (br.BaseStream.Position != br.BaseStream.Length)
{
string line = br.ReadString(); //read the line
string[] fields = line.Split(new char[] { '¥' });
if (fields[0] == word.Term) //the term is the wanted term
{
string[] split = fields[1].Split(new char[] { '€' });
int shows, docs;
if (int.TryParse(split[0], out shows)) //get the num of shows
{
word.NumOfShows = shows;
}
if (int.TryParse(split[1], out docs)) //get the num of docs
{
word.NumOfDocs = docs;
}
break;
}
else
{
numOfLine++; //move on to the next line
}
}
}
}
}
catch (Exception e)
{
throw e;
}
return(numOfLine);
}
