//File manipulators
public static string createBinTreeFile(BTree<int, sTweet> Tree, TreeIndexCheck check)
{
string filePath;
string startDir = Directory.GetCurrentDirectory();
string currentDir = startDir + @"\Searches\";
if(!Directory.Exists(currentDir))
Directory.CreateDirectory(currentDir);
Directory.SetCurrentDirectory(currentDir);
BinaryFormatter bf = new BinaryFormatter();
byte[] buffer;
using(var ms = new MemoryStream())
{
bf.Serialize(ms, Tree);
buffer = ms.ToArray();
}
filePath = String.Format("indexedTweets.bin");
using(BinaryWriter newFile = new BinaryWriter(File.Open(filePath, FileMode.Create)))
{
newFile.Write(buffer, 0, buffer.Length);
newFile.Close();
}
Directory.SetCurrentDirectory(startDir);
SaveTreeIndex(check.index, check.height, check.degree);
return currentDir + filePath;
}
private void button1_Click(object sender, EventArgs e)
{
TreeOfTweets = Pesquisar();
TreeIndexCheck newCheck = new TreeIndexCheck(0, 0, 0);
sTweet[] TweetArray = FileManipulation.GetNewArrayToBin(TreeOfTweets);
TreeOfTweets = FileManipulation.SerialITweetToBTree(TweetArray, ref newCheck);
FileManipulation.createBinTreeFile(TreeOfTweets, newCheck);
}
public static sTweet[] BTreeToSerialITweet(BTree<int, sTweet> Tree, TreeIndexCheck check)
{
Entry<int, sTweet> chave = new Entry<int, sTweet>();
sTweet[] TweetArray = new sTweet[check.index];
for(int index = 0; index < check.index; index++)
{
chave = Tree.Search(index);
TweetArray[index] = chave.Pointer; //salva ponteiro da árvore no array
}
return TweetArray;
}
private bool checkTreeFileIntegrity(BTree.BTree<int, sTweet> tree, TreeIndexCheck checkNewTree)
{
if(tree.Degree != checkNewTree.degree || tree.Height != checkNewTree.height)
{
MessageBox.Show(@"Problema com a árvore lida! Houve problema no salvamento dos arquivos,
\nOu alguém alterou informações de dentro dos arquivos.", "ERRO 004");
return false;
}
else
{
MessageBox.Show(String.Format("Árvore salva com sucesso!\n\nHeight:\t{0}\nDegree:\t{1}\nIndex:\t{2}", tree.Height, tree.Degree, checkNewTree.index));
return true;
}
}
public Tweet_Reader()
{
InitializeComponent();
string ReadFile = @"\indexedTweets.bin";
if(File.Exists(Directory.GetCurrentDirectory() + @"\Searches" + ReadFile))
{
TreeIndexCheck check = new TreeIndexCheck(0, 0, 0);
sTree = FileManipulation.readBinTreeFile(ReadFile, ref check);
sList = FileManipulation.BTreeToSerialITweet(sTree, check);
if(sList != null)
buildListBox(false, 1);
}
else
{
BackgroundNull.BringToFront();
label1.BringToFront();
BackgroundNull.Show();
label1.Show();
}
}
private void TweetRefresh_Click(object sender, EventArgs e)
{
if(File.Exists(Directory.GetCurrentDirectory() + @"\Searches\indexedTweets.bin"))
{
TreeIndexCheck check = new TreeIndexCheck(0, 0, 0);
sTree = FileManipulation.readBinTreeFile(@"\indexedTweets.bin", ref check);
sList = FileManipulation.BTreeToSerialITweet(sTree, check);
buildListBox(crescentOrder.Checked, 1);
}
else
{
MessageBox.Show("Não foi possível localizar o arquivo.");
}
}
private static void SaveTreeIndex(int index, int height, int degree)
{
string startDir = Directory.GetCurrentDirectory();
string currentDir = startDir + @"\Searches\";
string filePath = String.Empty;
if(!Directory.Exists(currentDir))
Directory.CreateDirectory(currentDir);
Directory.SetCurrentDirectory(currentDir);
TreeIndexCheck newTree = new TreeIndexCheck(index, height, degree);
BinaryFormatter bf = new BinaryFormatter();
byte[] buffer;
using(var ms = new MemoryStream())
{
bf.Serialize(ms, newTree);
buffer = ms.ToArray();
}
filePath = String.Format("treeIndex.bin");
using(BinaryWriter newFile = new BinaryWriter(File.Open(filePath, FileMode.Create)))
{
newFile.Write(buffer, 0, buffer.Length);
newFile.Close();
}
Directory.SetCurrentDirectory(startDir);
return;
}
public static BTree<int, sTweet> SerialITweetToBTree(sTweet[] TweetArray, ref TreeIndexCheck check)
{
BTree<int, sTweet> Tree = new BTree<int, sTweet>(5);
int index = 0;
foreach(var tweet in TweetArray)
Tree.Insert(index++, tweet);
check = new TreeIndexCheck(index, Tree.Height, Tree.Degree);
return Tree;
}
public static BTree<int, sTweet> readBinTreeFile(string path, ref TreeIndexCheck check)
{
string currentdir = Directory.GetCurrentDirectory() + @"\Searches\";
BinaryFormatter formatter = new BinaryFormatter();
System.IO.Stream stream = new FileStream(currentdir + path, FileMode.Open, FileAccess.Read, FileShare.Read);
BTree<int, sTweet> Tree = (BTree<int, sTweet>) formatter.Deserialize(stream);
stream.Close();
check = ReadTreeIndex(currentdir + @"\treeIndex.bin");
return Tree;
}
//Tree functions
public static TreeIndexCheck GetTreeIndexCheck(BTree<int, sTweet> Tree)
{
TreeIndexCheck check;
int index = 0;
bool flag = false;
Entry<int, sTweet> temp;
while(flag != true)
{
temp = Tree.Search(index++);
if(temp == null)
flag = true;
}
check = new TreeIndexCheck(--index, Tree.Height, Tree.Degree);
return check;
}
public static sTweet[] GetNewArrayToBin(BTree<int, sTweet> newTree)
{
TreeIndexCheck checkTree = new TreeIndexCheck(0,0,0);
sTweet[] auxNew;
TreeIndexCheck newTreeCheck;
if(!File.Exists(Directory.GetCurrentDirectory() + @"\Searches\indexedTweets.bin"))
{
newTreeCheck = GetTreeIndexCheck(newTree);
auxNew = BTreeToSerialITweet(newTree, newTreeCheck); //auxNew contains the new tree that the function received
return auxNew;
}
else
{
BTree<int, sTweet> Tree = readBinTreeFile("indexedTweets.bin", ref checkTree);
sTweet[] auxTweetArray = BTreeToSerialITweet(Tree, checkTree); //auxTweetArray contains the old tree that was in memory
newTreeCheck = GetTreeIndexCheck(newTree);
auxNew = BTreeToSerialITweet(newTree, newTreeCheck); //auxNew contains the new tree that the function received
//sTweet[] combined = auxTweetArray.Concat(auxNew).ToArray(); //combines the two arrays, with no sorting
//combined = checkIfRepeatedTweets(combined);
sTweet[] combined = checkIfRepeatedTweets(auxNew, auxTweetArray);
return combined;
}
}
private BTree.BTree<int, sTweet> Pesquisar(TweetSearchParameters searchParameter)
{
string aux = button1.Text;
if ((searchParameter.SearchQuery != "") || (searchParameter.GeoCode != null)) //usuário passou parâmetros
{
progressBar.Show();
button1.Text = "Searching, please wait...";
IEnumerable<ITweet> list = Search.SearchTweets(searchParameter);
progressBar.Step = 33;
progressBar.PerformStep();
sTweet[] tweetArray = FileManipulation.ListToSerialTweet(list, list.Count(), searchParameter);
progressBar.PerformStep();
TreeIndexCheck check = new TreeIndexCheck(0, 0, 0);
BTree.BTree<int, sTweet> Tree = FileManipulation.SerialITweetToBTree(tweetArray, ref check);
progressBar.PerformStep();
int i = list.Count();
button1.Text = aux;
MessageBox.Show("Todos tweets lidos. Retornando a lista com " + i.ToString() + " elementos.");
progressBar.Value = 0;
return Tree;
}
else
{
MessageBox.Show("Pesquisa sem parâmetros!\nInsira pelos menos um query de texto ou um geolocal.", "ERROR 001");
return null;
}
}
