/*
* Search collection for ALL query terms using the terms to iterate over
*/
private void Search_Click(object sender, EventArgs e)
{
string folderPath = FolderOutput.Text; // get the folderPath from output TextBox
string[] searchTerms = SearchTerms.Text.Split(' '); // Get the search terms
// check a folderPath is inputted and check a search query is inputted
if (folderPath != "" && !(searchTerms.Length < 2 && searchTerms[0] == ""))
{
FileOutput.Items.Clear(); // clear the file ListBox
FrequencyBox.Clear(); // clear the frequency TextBox
// start the timer on a search, this timer includes generating Hashtable,
// searching the collection, and querying Hashtable for query frequencies
var watch = System.Diagnostics.Stopwatch.StartNew();
// increase searchCount
searchCount++;
// reset fileCount
fileCount = 0;
/*
* Modularised methods to get querys
*/
Hashtable wf = indexUtils.GetHashtable(folderPath); //the Hashtable generated on search.
// Get the files containing the search terms using iterating over terms method and output
List <string> containFiles = searchUtil.GetFilesContainingTermsByTerms(folderPath, searchTerms,
CheckSynonyms.Checked, newWordsDataSet);
foreach (string file in containFiles)
{
FileOutput.Items.Add(file);
fileCount++;
}
/*
* Output from the Hashtable - query terms and their frequency, plus the
* word in the entire collection with the highest frequency
*/
// output the maximum frequency word
MostFrequentBox.Text = indexUtils.GetMax(wf);
// output the query terms frequency (if they exist)
FrequencyBox.Text = indexUtils.QueryFrequency(wf, searchTerms);
// end of the search process
watch.Stop();
// get the results of stopWatch.
var elapsedTime = watch.ElapsedMilliseconds;
totalSearchTime += elapsedTime;
// Output search times and number of found files to the Form
SearchTime.Text = "Search Time: " + elapsedTime.ToString() + "ms";
AverageTime.Text = "Average Time: " + (totalSearchTime / searchCount).ToString("0") + "ms";
FoundFiles.Text = "Files Found: " + fileCount;
}
else
{
if (folderPath == "")
{
MessageBox.Show("No folder has been selected!");
}
else
{
MessageBox.Show("No search query entered");
}
}
}
/*
* Search collection for ALL the query terms iterating over the files
* This is now searching the Inverted Index
*/
private void SearchByFiles_Click(object sender, EventArgs e)
{
string folderPath = FolderOutput.Text; // get the folderPath from output TextBox
string[] searchTerms = SearchTerms.Text.Split(' '); // Get the search terms
List <string> containFiles = new List <string>();
// check a folderPath is inputted and check a search query is inputted
if (folderPath != "" && !(searchTerms.Length < 2 && searchTerms[0] == ""))
{
// checks if thread building index is running
if (thread.IsAlive)
{
MessageBox.Show("The index is currently rebuilding. Try again later");
}
else
{
FileOutput.Items.Clear(); // clear the file ListBox
FrequencyBox.Clear(); // clear the frequency TextBox
// start the timer on a search, this timer includes generating Hashtable,
// searching the collection, and querying Hashtable for query frequencies
var watch = System.Diagnostics.Stopwatch.StartNew();
// increase searchCount
searchCount++;
// reset fileCount
fileCount = 0;
/*
* Modularised methods to get querys
*/
//Check the inverted index is created
if (!isIndexCreated)
{
// No index exists so create one first.
CreateInvertedIndex_Click(sender, e);
}
else
{
// search for the files in the index matching the terms
searchInvertedIndex(searchTerms);
}
// stop the watch
watch.Stop();
// get the results of stopWatch.
var elapsedTime = watch.ElapsedMilliseconds;
totalSearchTime += elapsedTime;
// Output search times and number of found files to the Form
SearchTime.Text = "Search Time: " + elapsedTime.ToString() + "ms";
AverageTime.Text = "Average Time: " + (totalSearchTime / searchCount).ToString("0") + "ms";
FoundFiles.Text = "Files Found: " + fileCount;
}
}
else
{
if (folderPath == "")
{
MessageBox.Show("No folder has been selected!");
}
else
{
MessageBox.Show("No search query entered");
}
}
}